Industrial controller, data monitoring method and monitoring system

Abstract

The invention provides an industrial controller, a data monitoring method and a monitoring system. In the industrial controller, a network processing chip is electrically connected with a first interface, a second interface, a control unit and a storage unit; the first interface, the switch unit and the second interface are electrically connected in sequence to form a switch link; and the first interface and the second interface are respectively in communication connection with a first tested object and a second tested object outside. Therefore, when the working mode of the control unit is a monitoring mode and the switch link is in a conducting state, the control unit sends a detected instruction to the network processing chip; and the network processing chip continuously acquires communication contents between the first tested object and the second tested object according to the tested instruction, forms a piece of communication data by the acquired communication contents according to a preset format, and stores the communication data in the storage unit. According to the invention, on the premise that the communication between the two tested objects is not influenced, the communication content between the two tested objects is monitored; and when the on state is switched to the off state, the control unit is also used for switching the working mode of the control unit to a verification processing mode, so that a communication content verification modification instruction between the two tested objects is realized.

Description

Technical Field

[0001] The present invention relates to the field of industrial control, and more particularly, to an industrial controller, a data monitoring method, and a monitoring system. Background Art

[0002] With the rapid development of information technology, in the high-end manufacturing industry, the degree of intelligence of industrial control equipment has been continuously improved. Various components with different functions in industrial control equipment complete complex manufacturing tasks through precise combination and collaborative work. Under this background, the control system of industrial control equipment has become increasingly important, and single-board computers, industrial computers, and various special controllers have become the core components of the control system.

[0003] Currently, the communication between components in industrial control equipment mainly relies on various protocol interfaces to achieve real-time and efficient data exchange. However, this complex communication system also brings a series of problems. First, many industrial computer communication systems adopt a closed design, resulting in the inability of machine users to directly monitor the communication content between components. This closed nature makes it difficult to quickly locate the root cause of problems through communication data when the equipment fails or has performance issues, thus increasing the difficulty and time cost of maintenance and troubleshooting. Moreover, in certain situations, machine users may hope to modify the original communication content of the machine through control to achieve specific functions. Summary of the Invention

[0004] The purpose of the present invention is to provide an industrial controller, a data monitoring method, and a monitoring system to improve the problems existing in the prior art.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, an embodiment of the present invention provides an industrial controller, including a first interface, a second interface, a switch unit, a network processing chip, a control unit, and a storage unit; the network processing chip is electrically connected to the first interface, the second interface, the control unit, and the storage unit; the first interface, the switch unit, and the second interface are electrically connected in sequence to form a switch link; the first interface and the second interface are respectively communicatively connected to a first object under test and a second object under test outside.

[0007] When the working mode of the control unit is the monitoring mode and the switch link is in the conducting state, the control unit is configured to send a measurement instruction to the network processing chip.

[0008] The network processing chip is configured to continuously obtain the communication content between the first object under test and the second object under test according to the measurement instruction, and form a piece of communication data in a preset format with the obtained communication content and store it in the storage unit.

[0009] Optionally, when the switch link switches from the on state to the off state, the control unit is further configured to switch its working mode to the verification processing mode and then send a verification modification instruction to the network processing chip;

[0010] The network processing chip is further configured to modify the communication data sent by the first DUT according to the verification modification instruction and then forward it to the second DUT, and / or modify the communication data sent by the second DUT according to the verification modification instruction and then forward it to the first DUT.

[0011] Optionally, the control unit is electrically connected to the storage unit, and the industrial controller further includes a communication module electrically connected to the control unit;

[0012] The control unit is further configured to respond to a user's transmission operation and forward the communication content stored in the storage unit to a user-specified user terminal through the communication module.

[0013] Optionally, the control unit is electrically connected to the storage unit, and the industrial controller further includes a display unit connected to the control unit. Each piece of communication data stored in the storage unit includes a timestamp, a sender identifier, and communication content;

[0014] The control unit is further configured to respond to a user's display operation, read all communication data from the storage unit, and sort all communication data in ascending order of the timestamp;

[0015] The control unit is further configured to display the sorted communication data item by item through the display unit.

[0016] Optionally, the industrial controller further includes a third interface connected to the control unit, and the third interface is connected to an external memory;

[0017] The control unit is further configured to regularly back up all communication data in the storage unit to the external memory.

[0018] Optionally, the switch unit includes any one of a push-button switch, a toggle switch, a rotary switch, a slide switch, and a trigger.

[0019] Optionally, both the first interface and the second interface are RJ45 interfaces, and the network processing chip is a PHY chip with at least two network IP cores;

[0020] Alternatively, both the first interface and the second interface are RS232 interfaces, and the network processing chip is a serial port management chip.

[0021] Second aspect, an embodiment of the present invention further provides a data monitoring method, which is applied to an industrial controller. The industrial controller includes a first interface, a second interface, a switch unit, a network processing chip, a control unit, and a storage unit; the network processing chip is electrically connected to the first interface, the second interface, the control unit, and the storage unit; the first interface, the switch unit, and the second interface are electrically connected in sequence to form a switch link; the first interface and the second interface are respectively communicatively connected to an external first measured object and a second measured object; the method includes:

[0022] When the working mode of the control unit is the monitoring mode and the switch link is in the conducting state, the control unit sends a measured instruction to the network processing chip;

[0023] The network processing chip continuously acquires the communication content between the first measured object and the second measured object according to the measured instruction, and forms a piece of communication data in a preset format and stores it in the storage unit.

[0024] Optionally, the method further includes:

[0025] When the switch link switches from the conducting state to the disconnected state, the control unit switches its working mode to the verification processing mode and then sends a verification modification instruction to the network processing chip;

[0026] The network processing chip modifies the communication data sent by the first measured object according to the verification modification instruction and forwards it to the second measured object, and / or, the network processing chip modifies the communication data sent by the second measured object according to the verification modification instruction and forwards it to the first measured object.

[0027] Third aspect, an embodiment of the present invention further provides a monitoring system, including the industrial controller as described in the first aspect and a first measured object and a second measured object connected to the industrial controller.

[0028] Compared with the prior art, the embodiments of the present invention provide an industrial controller, a data monitoring method and a monitoring system. In the industrial controller: a network processing chip is electrically connected to a first interface, a second interface, a control unit and a storage unit; the first interface, a switch unit and the second interface are electrically connected in sequence to form a switch link; the first interface and the second interface are respectively communicatively connected to an external first object under test and a second object under test. Therefore, when the working mode of the control unit is the monitoring mode and the switch link is in the conducting state, the control unit sends a measurement instruction to the network processing chip; the network processing chip continuously obtains the communication content between the first object under test and the second object under test according to the measurement instruction, and forms a piece of communication data in a preset format from the obtained communication content and stores it in the storage unit. The present invention realizes the monitoring of the communication content between two objects under test without affecting the communication between the two objects under test. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0030] Figure 1 FIG. 1 is one of the schematic structural diagrams of an industrial controller provided by an embodiment of the present invention.

[0031] Figure 2 FIG. 2 is a schematic diagram for explaining the pin definitions of different types of RS232 interfaces.

[0032] Figure 3 FIG. 3 is another schematic structural diagram of an industrial controller provided by an embodiment of the present invention.

[0033] Figure 4 FIG. 4 is one of the schematic flowcharts of a data monitoring method provided by an embodiment of the present invention.

[0034] Figure 5 FIG. 5 is a schematic structural diagram of a monitoring system provided by an embodiment of the present invention.

[0035] Reference numerals: 100 - industrial controller; 110 - first interface; 120 - second interface; 130 - switch unit; 140 - network processing chip; 150 - control unit; 160 - storage unit; 170 - communication module; 180 - display unit; 190 - third interface; 200 - first object under test; 300 - second object under test; 10 - monitoring system. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention usually described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0039] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships in which the products of the invention are usually placed during use, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0040] In addition, terms such as "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0041] It should be noted that, without conflict, the features in the embodiments of the present invention can be combined with each other.

[0042] As mentioned in the background art section, many current industrial computer communication systems adopt a closed design, resulting in machine users being unable to directly monitor the communication content between components. This closed nature makes it difficult to quickly locate the root cause of problems through communication data when equipment malfunctions or has performance issues, thereby increasing the difficulty and time cost of maintenance and troubleshooting.

[0043] In addition, in certain specific application scenarios, machine users may need to adjust or modify the original communication content of the machine according to actual needs to achieve specific functions or optimize the production process. However, the existing closed communication systems limit this need of users and cannot flexibly control and modify the communication content.

[0044] Based on the discovery of the above technical problems, the inventor has put forward the following technical solutions through creative labor to solve or improve the above problems. It should be noted that the defects existing in the above solutions in the prior art are all the results obtained by the inventor through practice and careful research. Therefore, the process of discovering the above problems and the solutions proposed in the embodiments of the present application below for the above problems should be the contributions made by the inventor to the present application during the invention and creation process, and should not be understood as the technical content known to those skilled in the art.

[0045] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of an industrial controller provided by an embodiment of the present invention. In combination with Figure 1 , the industrial controller 100 includes a first interface 110, a second interface 120, a switch unit 130, a network processing chip 140, a control unit 150, and a storage unit 160; the network processing chip 140 is electrically connected to the first interface 110, the second interface 120, the control unit 150, and the storage unit 160, and the control unit 150 is also electrically connected to the storage unit 160; the first interface 110, the switch unit 130, and the second interface 120 are electrically connected in sequence to form a switch link; the first interface 110 and the second interface 120 are respectively communicatively connected to an external first measured object 200 and a second measured object 300.

[0046] When the working mode of the control unit 150 is the monitoring mode and the switch link is in the conducting state, the control unit 150 is used to send a measured instruction to the network processing chip 140;

[0047] The network processing chip 140 is used to continuously obtain the communication content between the first measured object 200 and the second measured object 300 according to the measured instruction, and form a piece of communication data in a preset format with the obtained communication content and store it in the storage unit 160.

[0048] Optionally, the control unit 150 can be a CPU or a programmable logic device. The first measured object 200 and the second measured object 300 can be two communication components of an industrial control device, or respectively the communication components of two industrial control devices, or two independent industrial control devices, and the embodiments of the present invention do not limit this.

[0049] In the prior art, the first measured object 200 and the second measured object 300 communicate through a direct connection line between the two.

[0050] In the present invention, the direct connection line between the first object under test 200 and the second object under test 300 is disconnected, and then the first object under test 200 and the second object under test 300 are respectively connected to the first interface 110 and the second interface 120 of the industrial controller 100, and the switch unit 130 is in the default closed state. Thus, when the switch link is in the conducting state, when the first object under test 200 and the second object under test 300 communicate, the data sent from one end can not only be transmitted from the switch link to the other end, but also be transmitted to the network processing chip 140.

[0051] In the industrial controller 100 provided by the present invention, the network processing chip 140 is electrically connected to the first interface 110, the second interface 120, the control unit 150 and the storage unit 160; the first interface 110, the switch unit 130 and the second interface 120 are electrically connected in sequence to form a switch link; the first interface 110 and the second interface 120 are respectively in communication connection with the external first object under test 200 and the second object under test 300. Therefore, when the working mode of the control unit 150 is the monitoring mode and the switch link is in the conducting state, the control unit 150 sends a measurement instruction to the network processing chip 140; the network processing chip 140 continuously acquires the communication content between the first object under test 200 and the second object under test 300 according to the measurement instruction, and forms a piece of communication data in a preset format from the acquired communication content and stores it in the storage unit 160. The present invention realizes the monitoring of the communication content between two objects under test without affecting the communication between the two objects under test.

[0052] In an optional implementation manner, the switch unit 130 may include any one of a push-button switch, a toggle switch, a rotary switch, a slide switch, and a flip-flop. Taking the push-button switch as an example, the user can control the push-button switch to switch the switch link between the conducting state and the disconnected state. This example is only for illustration and is not limited herein.

[0053] The switch unit 130 may also adopt a pure mechanical switch, so that even if the industrial controller 100 loses power, it will not affect the communication between the first object under test 200 and the second object under test 300.

[0054] In an optional implementation manner, when the switch link switches from the conducting state to the disconnected state, the control unit 150 is further configured to switch its own working mode to the verification processing mode and then send a verification modification instruction to the network processing chip 140;

[0055] The network processing chip 140 is further configured to modify the communication data sent by the first object under test 200 according to the verification modification instruction and then forward it to the second object under test 300, and / or modify the communication data sent by the second object under test 300 according to the verification modification instruction and then forward it to the first object under test 200.

[0056] In this embodiment, the verification modification instruction is used to indicate the modification object and the modification method. The modification object is the data sent by the first DUT 200 or the data sent by the second DUT 300, and the modification method mainly reflects the specific content to be modified and the content after modification in the data.

[0057] It can be understood that when the switch link is in the on state, the network processing chip 140 can obtain the communication content between the first DUT 200 and the second DUT 300 in real time. When the switch link is switched to the off state, if the first DUT 200 and the second DUT 300 communicate, the data sent by one end cannot be directly transmitted to the other end, but can only be transmitted to the network processing chip 140 and then sent to the other end by the network processing chip 140. Then, in the case where the first DUT 200 and the second DUT 300 do not belong to the same manufacturer but need to perform identity verification, the network processing chip 140 modifies the verification information sent by one end based on the verification modification instruction and then sends it to the other end, so that the verification can pass.

[0058] In a possible implementation, the network processing chip 140 may be a PHY chip (Physical Layer Chip) containing at least two network IP cores. Both the first interface 110 and the second interface 120 may be RJ45 interfaces. The first interface 110 and the first DUT 200, and the second interface 120 and the second DUT 300 can be connected by network cables.

[0059] In another possible implementation, the network processing chip 140 may be a serial port management chip, such as the chip model STMicroelectronics ST3245. Both the first interface 110 and the second interface 120 are RS232 interfaces. The RS232 interface in the first interface 110 and the RS232 interface in the first DUT 200, and the RS232 interface in the second interface 120 and the RS232 interface in the second DUT 300 can be connected by a DB9 serial cable.

[0060] Among them, the RS232 interface is divided into two types: male head and female head. Combining Figure 2 with the interface pin definitions of the male head and female head shown, when the RS232 interface in the first DUT 200 is a female head and the RS232 interface in the second DUT 300 is a male head, the first interface 110 is a male head and the second interface 120 is a female head; when the RS232 interface in the first DUT 200 is a male head and the RS232 interface in the second DUT 300 is a female head, the first interface 110 is a female head and the second interface 120 is a male head. In an optional implementation, please refer to Figure 3, the industrial controller 100 may further include a communication module 170 electrically connected to the control unit 150. The control unit 150 is further configured to, in response to a user's transmission operation, forward the communication content stored in the storage unit 160 to a user-specified user terminal through the communication module 170.

[0061] In this embodiment, the communication module 170 of the industrial controller 100 may be a 4G module, a 5G module, a Bluetooth module, a WIFI module, or a network card module, etc.

[0062] Optionally, after the user terminal establishes a connection with the communication module 170 of the industrial controller 100, it can access the content of the storage unit 160 and transmit the content of the storage unit 160 on the user terminal.

[0063] In an optional implementation manner, please continue to refer to Figure 3 , the industrial controller 100 may further include a display unit 180 connected to the control unit 150. Each communication data stored in the storage unit 160 includes a timestamp, a sender identifier, and communication content. The control unit 150 is further configured to, in response to a user's display operation, read all communication data from the storage unit 160 and sort all communication data in ascending order of the timestamp; the control unit 150 is further configured to display the sorted communication data item by item through the display unit 180.

[0064] In this embodiment, when the network processing chip 140 receives a piece of communication content, it will record the received timestamp and the sender identifier, and the sender identifier is the identifier of the first measured object 200 or the identifier of the second measured object 300. The preset format may be to store the timestamp, the sender identifier, and the communication content in sequence.

[0065] In an optional implementation manner, please continue to refer to Figure 3 , the industrial controller 100 may further include a third interface 190 connected to the control unit 150, and the third interface 190 is connected to an external memory; the control unit 150 is further configured to periodically back up all communication data in the storage unit 160 to the external memory.

[0066] In an optional example, the third interface 190 may be a USB interface, and the external memory may be a USB flash drive or a mobile hard disk. This example is only for illustration and is not limited here.

[0067] It can be understood that Figure 1 、 Figure 3 The structure shown is only for illustration, and the industrial controller 100 may further include more or fewer components than those shown in Figure 1 、 Figure 3 , or have a different configuration.

[0068] Please refer to Figure 4 , Figure 4 which is a schematic flowchart of a data monitoring method provided by an embodiment of the present invention. This data monitoring method is applied to the above industrial controller 100. The industrial controller 100 includes a first interface 110, a second interface 120, a switch unit 130, a network processing chip 140, a control unit 150, and a storage unit 160. The network processing chip 140 is electrically connected to the first interface 110, the second interface 120, the control unit 150, and the storage unit 160. The first interface 110, the switch unit 130, and the second interface 120 are electrically connected in sequence to form a switch link. The first interface 110 and the second interface 120 are respectively communicatively connected to an external first measured object 200 and a second measured object 300. This data monitoring method includes the following steps S100 to S200:

[0069] S100. When the working mode of the control unit 150 is the monitoring mode and the switch link is in the conducting state, the control unit 150 sends a measured instruction to the network processing chip 140.

[0070] S200. The network processing chip 140 continuously acquires the communication content between the first measured object 200 and the second measured object 300 according to the measured instruction, and forms a piece of communication data in a preset format and stores it in the storage unit 160.

[0071] In an optional implementation manner, the method may further include the following steps S300 to S400:

[0072] S300. When the switch link switches from the conducting state to the disconnected state, the control unit 150 switches its own working mode to the verification processing mode and then sends a verification modification instruction to the network processing chip 140.

[0073] S400. The network processing chip 140 modifies the communication data sent by the first measured object 200 according to the verification modification instruction and forwards it to the second measured object 300, and / or the network processing chip 140 modifies the communication data sent by the second measured object 300 according to the verification modification instruction and forwards it to the first measured object 200.

[0074] For the implementation principle of the data monitoring method provided by the present invention, please refer to the above introduction of the industrial controller 100, which will not be elaborated here.

[0075] Please refer to Figure 5 , Figure 5 which is a schematic structural diagram of a monitoring system 10 provided by the present invention. Figure 4 In it, the monitoring system 10 includes the above industrial controller 100 and the first measured object 200 and the second measured object 300 connected to the industrial controller 100.

[0076] An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is run by a processor, the data monitoring method disclosed in the above embodiment is implemented. The computer-readable storage medium may be, but is not limited to, various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a PROM, an EPROM, an EEPROM, a FLASH disk, or an optical disc.

[0077] In summary, an embodiment of the present invention provides an industrial controller, a data monitoring method, and a monitoring system. In the industrial controller: a network processing chip is electrically connected to a first interface, a second interface, a control unit, and a storage unit; the first interface, a switch unit, and the second interface are electrically connected in sequence to form a switch link; the first interface and the second interface are respectively communicatively connected to an external first measured object and a second measured object. Therefore, when the working mode of the control unit is the monitoring mode and the switch link is in the conducting state, the control unit sends a measured instruction to the network processing chip; the network processing chip continuously obtains the communication content between the first measured object and the second measured object according to the measured instruction, and forms a piece of communication data in a preset format with the obtained communication content and stores it in the storage unit. The present invention realizes the monitoring of the communication content between two measured objects without affecting the communication between the two measured objects.

[0078] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An industrial controller, characterized in that, It includes a first interface, a second interface, a switch unit, a network processing chip, a control unit, and a storage unit; the network processing chip is electrically connected to the first interface, the second interface, the control unit, and the storage unit; the first interface, the switch unit, and the second interface are electrically connected in sequence to form a switch link; the first interface and the second interface are respectively communicatively connected to an external first DUT (Device Under Test) and a second DUT; When the working mode of the control unit is the monitoring mode and the switch link is in the conducting state, the control unit is used to send a DUT instruction to the network processing chip; The network processing chip is used to continuously acquire the communication content between the first DUT and the second DUT according to the DUT instruction, and form a piece of communication data in a preset format and store it in the storage unit.

2. The industrial controller according to claim 1, characterized in that, When the switch link switches from the conducting state to the disconnected state, the control unit is further used to switch its own working mode to the verification and processing mode, and then send a verification and modification instruction to the network processing chip; The network processing chip is further used to modify the communication data sent by the first DUT according to the verification and modification instruction and forward it to the second DUT, and / or modify the communication data sent by the second DUT according to the verification and modification instruction and forward it to the first DUT.

3. The industrial controller according to claim 1, wherein The control unit is electrically connected to the storage unit, and the industrial controller further includes a communication module electrically connected to the control unit; The control unit is further used to respond to the user's transmission operation, and forward the communication content stored in the storage unit to the user-specified user terminal through the communication module.

4. The industrial controller according to claim 1, characterized in that, The control unit is electrically connected to the storage unit, the industrial controller further includes a display unit connected to the control unit, and each piece of communication data stored in the storage unit includes a timestamp, a sender identifier, and communication content; The control unit is further used to respond to the user's display operation, read all the communication data from the storage unit, and sort all the communication data in ascending order according to the timestamp; The control unit is further used to display the sorted communication data item by item through the display unit.

5. The industrial controller according to claim 1, wherein The industrial controller further includes a third interface connected to the control unit, and the third interface is connected to an external memory; The control unit is further used to regularly back up all the communication data in the storage unit to the external memory.

6. The industrial controller according to claim 1, wherein The switch unit includes any one of a push-button switch, a toggle switch, a rotary switch, a slide switch, and a trigger.

7. The industrial controller according to claim 1, wherein Both the first interface and the second interface are RJ45 interfaces, and the network processing chip is a PHY chip containing at least two network IP cores; Alternatively, both the first interface and the second interface are RS232 interfaces, and the network processing chip is a serial port management chip.

8. A data monitoring method, characterized in that, Applied to an industrial controller, the industrial controller includes a first interface, a second interface, a switch unit, a network processing chip, a control unit, and a storage unit; the network processing chip is electrically connected to the first interface, the second interface, the control unit, and the storage unit; the first interface, the switch unit, and the second interface are electrically connected in sequence to form a switch link; The first interface and the second interface are respectively communicatively connected to an external first DUT (Device Under Test) and a second DUT; the method includes: When the working mode of the control unit is the monitoring mode and the switch link is in the conducting state, the control unit sends a measurement instruction to the network processing chip; The network processing chip continuously acquires the communication content between the first DUT and the second DUT according to the measurement instruction, and forms a piece of communication data in a preset format and stores it in the storage unit.

9. The data monitoring method according to claim 8, wherein The method further includes: When the switch link switches from the conducting state to the disconnected state, the control unit switches its working mode to the verification mode and then sends a verification modification instruction to the network processing chip; The network processing chip modifies the communication data sent by the first DUT according to the verification modification instruction and forwards it to the second DUT, and / or, the network processing chip modifies the communication data sent by the second DUT according to the verification modification instruction and forwards it to the first DUT.

10. A monitoring system, characterized in that, Including the industrial controller as claimed in claim 1 or 2, and a first DUT and a second DUT connected to the industrial controller.

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