IO-Link slave station equipment and IO-Link system

Abstract

The invention discloses an IO-Link slave station device and an IO-Link system, relates to the technical field of communication, and is characterized in that the IO-Link slave station device comprises a first CLASS-B interface, a bidirectional power supply circuit, a control circuit, an IO module and a signal output circuit; the first CLASS-B interface is respectively connected with the control circuit and the bidirectional power supply circuit, the control circuit is connected with the signal output circuit, and the IO module is respectively connected with the bidirectional power supply circuit and the signal output circuit; wherein when the first CLASS-B interface is connected with a CLASS-B interface of IO-Link master station equipment, the bidirectional power supply circuit is connected with a power supply end and a grounding end of the first CLASS-B interface, so that the CLASS-B interface provides power supply input of an actuator power supply of the signal output circuit; and if the first CLASS-B interface is connected with the CLASS-A interface of the IO-Link master station equipment, the bidirectional power supply circuit is connected with the power supply end and the grounding end of the IO module. According to the invention, the problem that the conventional IO-Link slave station equipment cannot be adapted to the IO-Link master station equipment with the CLASS-A interface is solved.

Description

Technical Field

[0001] The present invention relates to the field of communication technologies, and more specifically, to an IO-Link slave device and an IO-Link system. Background Art

[0002] The interfaces of existing IO-LINK systems are divided into two types: CLASS-A and CLASS-B. Among them, the CLASS-B interface provides actuator power while the CLASS-A interface does not. IO-Link slave devices such as analog / digital output modules require actuator power supply. When the IO-Link slave device is connected to the CLASS-A interface of the IO-Link master device, the lack of actuator power results in abnormal operation. Therefore, the IO-Link slave device can only be used in cooperation with the IO-Link master device with a CLASS-B interface. Therefore, users will have certain restrictions when selecting modules and cannot flexibly match IO-Link master / slave devices. Summary of the Invention

[0003] The purpose of the present invention is to provide an IO-Link slave device and an IO-Link system, and the present invention solves the problem that the current IO-Link slave device cannot be adapted to the IO-Link master device with a CLASS-A interface.

[0004] In the first aspect of the present invention, an IO-Link slave device is provided. The IO-Link slave device includes a first CLASS-B interface, a bidirectional power circuit, a control circuit, an IO module, and a signal output circuit;

[0005] The first CLASS-B interface is connected to the control circuit and the bidirectional power circuit. The control circuit is connected to the signal output circuit. The IO module is connected to the bidirectional power circuit and the signal output circuit;

[0006] Wherein, when the first CLASS-B interface is connected to the CLASS-B interface of the IO-Link master device, the bidirectional power circuit is connected to the power supply terminal and the ground terminal of the first CLASS-B interface to provide the power input of the actuator power for the signal output circuit by the CLASS-B interface;

[0007] When the first CLASS-B interface is connected to the CLASS-A interface of the IO-Link master device, the bidirectional power circuit is connected to the power supply terminal and the ground terminal of the IO module.

[0008] In an implementation scheme, the bidirectional power circuit includes a first control circuit and a second control circuit;

[0009] The first control circuit is used to control the connection between the bidirectional power supply circuit and the power supply terminal and the ground terminal of the first CLASS-B interface;

[0010] The second control circuit is used to control the connection between the bidirectional power supply circuit and the power supply terminal and the ground terminal of the IO module.

[0011] In an implementation scheme, the first control circuit includes a first PMOS transistor, a first resistor, a comparator, a first diode, a second diode, a third resistor, a fourth resistor, and a voltage regulator diode;

[0012] The power supply terminal of the first CLASS-B interface is respectively connected to the source electrode of the first PMOS transistor and one end of the first resistor. The other end of the first resistor is connected to the negative input terminal of the comparator and the cathode of the first diode. The anode of the first diode is connected to the anode of the voltage regulator diode, the anode of the second diode, and the negative input terminal of the comparator. The gate electrode of the first PMOS transistor is connected to the output terminal of the comparator and the other end of the fourth resistor. The negative input terminal of the comparator is connected to the anode of the voltage regulator diode. The cathode of the second diode is connected to one end of the third resistor. The other end of the third resistor is grounded after being connected to the ground terminal of the first CLASS-B interface;

[0013] The drain electrode of the first PMOS transistor, the positive input terminal of the comparator, one end of the fourth resistor, and the cathode of the voltage regulator diode are mutually connected to form a node and are connected to the actuator power supply.

[0014] In an implementation scheme, the second control circuit includes a second PMOS transistor, a second resistor, a fifth resistor, a sixth resistor, a seventh resistor, and a triode;

[0015] The power supply terminal of the IO module is connected to the source electrode of the second PMOS transistor. The drain electrode of the second PMOS transistor is connected to one end of the second resistor and one end of the fifth resistor. The gate electrode of the second PMOS transistor is connected to the other end of the second resistor and one end of the seventh resistor. The other end of the seventh resistor is connected to the emitter of the triode. The collector of the triode is grounded after being connected to one end of the sixth resistor and the ground terminal of the IO module. The base of the triode is connected to the other end of the fifth resistor and the other end of the sixth resistor;

[0016] Wherein, the drain electrode of the first PMOS transistor, the positive input terminal of the comparator, one end of the fourth resistor, and the cathode of the voltage regulator diode are all connected to the drain electrode of the second PMOS transistor, one end of the second resistor, and one end of the fifth resistor.

[0017] In one implementation, when the first CLASS-B interface is connected to the CLASS-B interface of the IO-Link master device, there is a 24V voltage input at the power supply terminal and the ground terminal of the first CLASS-B interface. The comparator outputs a low level, the first PMOS transistor conducts, the actuator power supply is connected to the ground terminal of the first CLASS-B interface through the first PMOS transistor for power supply, the second PMOS transistor conducts, and the power supply terminal of the IO module is connected to the actuator power supply through the second PMOS transistor, and a 24V power supply is output.

[0018] In one implementation, there is a 24V voltage input at the power supply terminal and the ground terminal of the first CLASS-B interface, and the voltage input at the power supply terminal of the IO module exceeds 24V. The voltage at the power supply terminal of the IO module makes the triode conduct through the parasitic diode inside the second PMOS transistor, so that the second PMOS transistor conducts. The actuator power supply is connected to the power supply terminal of the IO module through the second PMOS transistor for power supply; wherein, the comparator outputs a high level and the first PMOS transistor is cut off to prevent current from flowing back to the power supply terminal of the first CLASS-B interface and protect the IO-Link master device.

[0019] In one implementation, when the first CLASS-B interface is connected to the CLASS-A interface of the IO-Link master device, there is no 24V voltage input at the power supply terminal and the ground terminal of the first CLASS-B interface. The power supply terminal and the ground terminal of the IO module are used as power inputs. The voltage at the power supply terminal of the IO module makes the triode conduct through the parasitic diode inside the second PMOS transistor, so that the second PMOS transistor conducts. The actuator power supply is connected to the power supply terminal of the IO module through the second PMOS transistor for power supply, such that the comparator outputs a high level and the first PMOS transistor is cut off to prevent current from flowing back to the power supply terminal of the first CLASS-B interface.

[0020] In one implementation, the signal output circuit is an analog / digital output circuit.

[0021] In one implementation, the control circuit is used to output a control signal for controlling the digital / analog output of the signal output circuit.

[0022] In a second aspect of the present invention, an IO-Link system is provided, including an IO-Link slave device and an IO-Link master device provided in the first aspect of the present invention; wherein, the IO-Link master device is connected to the IO-Link slave device.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] In an IO-Link slave device provided by the present invention, a bidirectional power supply circuit is added to the slave device. Through the bidirectional power supply circuit, the first CLASS-B interface is respectively connected to a control circuit and the bidirectional power supply circuit. The control circuit is connected to a signal output circuit, and the IO module is respectively connected to the bidirectional power supply circuit and the signal output circuit. When the first CLASS-B interface is connected to the CLASS-B interface of the IO-Link master device, the bidirectional power supply circuit is controlled to be connected to the power supply terminal and the ground terminal of the first CLASS-B interface, so as to provide the power supply input of the actuator power supply of the signal output circuit by the CLASS-B interface. When the first CLASS-B interface is connected to the CLASS-A interface of the IO-Link master device, the bidirectional power supply circuit is controlled to be connected to the power supply terminal and the ground terminal of the IO module. It can be seen that when the IO-LINK slave module with the need for an actuator power supply is connected to the CLASS-B interface, power is supplied outward through the input and output ports of the bidirectional power supply circuit, which is consistent with the prior art solution. When connected to the CLASS-A interface, power can be supplied to the actuator power supply of the signal output circuit by applying power outside the bidirectional power supply circuit interface. Thus, the present invention improves the usability of the IO-LINK slave device. Description of the Drawings

[0025] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, form a part of this application, and do not constitute a limitation to the embodiments of the present invention. In the drawings:

[0026] Figure 1 Schematic diagram of the structure of an IO-Link slave device provided for the related art;

[0027] Figure 2 Schematic diagram of the structure of an IO-Link slave device provided by an embodiment of the present invention;

[0028] Figure 3 Schematic diagram of the structure of a bidirectional power supply circuit provided by an embodiment of the present invention.

[0029] Marks in the drawings and corresponding component names:

[0030] R1, the first resistor; R2, the second resistor; R3, the third resistor; R4, the fourth resistor; R5, the fifth resistor; R6, the sixth resistor; R7, the seventh resistor; M1, the first PMOS transistor; M2, the second PMOS transistor; D1, the first diode; D2, the second diode; D3, the zener diode; U1, the comparator; Q2, the triode. Detailed Embodiments

[0031] To make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to embodiments and the accompanying drawings. The illustrative embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0032] It should be noted that the term "comprising" or "may comprise" that can be used in various embodiments of the present application indicates the presence of the claimed functions, operations or elements, and does not limit the addition of one or more functions, operations or elements. In addition, as used in various embodiments of the present application, the terms "comprising", "having" and their cognates are only intended to represent specific features, numbers, steps, operations, elements, components or combinations of the foregoing items, and should not be construed as first excluding the existence of one or more other features, numbers, steps, operations, elements, components or combinations of the foregoing items or the possibility of adding one or more features, numbers, steps, operations, elements, components or combinations of the foregoing items.

[0033] In various embodiments of the present application, the expression "or" or "at least one of B or / and C" includes any combination or all combinations of the listed words. For example, the expression "B or C" or "at least one of B or / and C" may include B, may include C, or may include both B and C.

[0034] It should be understood that terms such as "first", "second", "third"..."seventh" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third"..."seventh" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0035] In the related art, the interfaces of the IO-LINK system are divided into two types: CLASS-A and CLASS-B. Among them, the CLASS-B interface provides the actuator power supply while the CLASS-A interface does not. IO-Link slave devices such as analog / digital output modules require actuator power supply, and the design of traditional IO-LINK slave devices is as Figure 1 shown, the slave device can only work when connected to the CLASS-B interface of the master device, and this design is not convenient for users to flexibly select the master / slave device combination.

[0036] To solve the deficiencies of the related art, the embodiments of the present invention provide an IO-Link slave device that can supply power to the actuator power supply of the signal output circuit by applying power externally to the bidirectional power circuit interface when connected to the CLASS-A interface, thereby improving the adaptability of the IO-Link slave device.

[0037] Please refer to Figure 2 , Figure 2 An IO-Link slave device provided by an embodiment of the present invention, the IO-Link slave device includes a first CLASS-B interface, a bidirectional power supply circuit, a control circuit, an IO module, and a signal output circuit; the first CLASS-B interface is connected to the control circuit and the bidirectional power supply circuit, the control circuit is connected to the signal output circuit, and the IO module is connected to the bidirectional power supply circuit and the signal output circuit; wherein, when the first CLASS-B interface is connected to the CLASS-B interface of the IO-Link master device, the bidirectional power supply circuit is connected to the power supply terminal and the ground terminal of the first CLASS-B interface to provide the power supply input of the actuator power supply of the signal output circuit by the CLASS-B interface; when the first CLASS-B interface is connected to the CLASS-A interface of the IO-Link master device, the bidirectional power supply circuit is connected to the power supply terminal and the ground terminal of the IO module.

[0038] Specifically, IO-Link (IEC 61131-9) is a digital communication protocol and interface standard for the industrial automation field, which allows two-way communication between sensors, actuators, and other industrial devices and controllers (such as PLCs, etc.) to achieve real-time data transmission and control signal exchange. For an IO-Link slave device, an IO-Link slave device refers to a field-level device that supports the IO-Link communication standard, and they perform two-way information exchange with the IO-Link master through the IO-Link interface. These devices usually include sensors, actuators, etc., which can receive instructions from the master device and feedback their own status or data to the master device. IO-Link slave devices can be applied to various industrial fields, such as automation, robotics, manufacturing, logistics, medical devices, etc. It can be used to achieve real-time monitoring, diagnosis, and control of devices, thereby improving production efficiency and product quality.

[0039] The signal output circuit is the Figure 2 analog / digital output circuit in. It can be understood that the signal output circuit is an existing circuit of the current IO-Link slave device and belongs to common knowledge, so this embodiment will not make redundant elaboration. The control circuit is used to output a control signal for controlling the digital / analog output of the signal output circuit. It can be understood that the control circuit is also an existing circuit of the IO-Link slave device and belongs to common knowledge, so this embodiment will not make redundant elaboration. Correspondingly, the IO module is the Figure 2 IO M12 interface in, which refers to an IO module with an interface size of 12mm.

[0040] In this embodiment, the bidirectional power supply circuit includes a first control circuit and a second control circuit. The first control circuit is used to control the connection between the bidirectional power supply circuit and the power supply terminal and the ground terminal of the first CLASS-B interface. The second control circuit is used to control the connection between the bidirectional power supply circuit and the power supply terminal and the ground terminal of the IO module.

[0041] Please refer to Figure 3 , the first control circuit includes a first PMOS transistor M1, a first resistor R1, a comparator U1, a first diode D1, a second diode D2, a third resistor R3, a fourth resistor R4, and a zener diode D3. The power supply terminal of the first CLASS-B interface is respectively connected to the source of the first PMOS transistor M1 and one end of the first resistor R1. The other end of the first resistor R1 is connected to the negative input terminal of the comparator U1 and the cathode of the first diode D1. The anode of the first diode D1 is connected to the anode of the zener diode D3, the anode of the second diode D2, and the negative input terminal of the comparator U1. The gate of the first PMOS transistor M1 is connected to the output terminal of the comparator U1 and the other end of the fourth resistor R4. The negative input terminal of the comparator U1 is connected to the anode of the zener diode D3. The cathode of the second diode D2 is connected to one end of the third resistor R3. The other end of the third resistor R3 is grounded after being connected to the ground terminal of the first CLASS-B interface. The drain of the first PMOS transistor M1, the positive input terminal of the comparator U1, one end of the fourth resistor R4, and the cathode of the zener diode D3 are interconnected to form a node and connected to the actuator power supply.

[0042] Specifically, the second control circuit includes a second PMOS transistor M2, a second resistor R2, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, and a triode Q2. The power supply terminal of the IO module is connected to the source of the second PMOS transistor M2. The drain of the second PMOS transistor M2 is connected to one end of the second resistor R2 and one end of the fifth resistor R5. The gate of the second PMOS transistor M2 is connected to the other end of the second resistor R2 and one end of the seventh resistor R7. The other end of the seventh resistor R7 is connected to the emitter of the triode Q2. The collector of the triode Q2 is grounded after being connected to one end of the sixth resistor R6 and the ground terminal of the IO module. The base of the triode Q2 is connected to the other end of the fifth resistor R5 and the other end of the sixth resistor R6. Among them, the drain of the first PMOS transistor M1, the positive input terminal of the comparator U1, one end of the fourth resistor R4, and the cathode of the zener diode D3 are all connected to the drain of the second PMOS transistor M2, one end of the second resistor R2, and one end of the fifth resistor R5.

[0043] It should be noted that the power supply terminal of the first CLASS-B interface refers to Figure 3For the second pin of the IO-Link interface, the ground terminal refers to the fifth pin of the IO-Link interface. Generally, the first CLASS-B interface of the IO-Link slave device has five pins, and generally, the pins can be defined by the numbers 1-5. For example, in this embodiment, the second pin and the fifth pin are used as the power supply terminal and the ground terminal, and the remaining first pin, third pin, and fourth pin are generally used for signal and communication connections respectively.

[0044] In one embodiment, when the first CLASS-B interface is connected to the CLASS-B interface of the IO-Link master device, there is a 24V voltage input at the power supply terminal and the ground terminal of the first CLASS-B interface. The comparator U1 outputs a low level, the first PMOS transistor M1 is turned on, the actuator power supply is connected to the ground terminal of the first CLASS-B interface through the first PMOS transistor M1 for power supply, the second PMOS transistor M2 is turned on, and the power supply terminal of the IO module is connected to the actuator power supply through the second PMOS transistor M2, and a 24V power supply is output.

[0045] In one embodiment, there is a 24V voltage input at the power supply terminal and the ground terminal of the first CLASS-B interface, and the voltage input at the power supply terminal of the IO module exceeds 24V. The power supply terminal of the IO module makes the triode Q2 conduct through the parasitic diode inside the second PMOS transistor M2, so that the second PMOS transistor M2 is turned on. The actuator power supply is connected to the power supply terminal of the IO module through the second PMOS transistor M2 for power supply; wherein, the comparator U1 outputs a high level, and the first PMOS transistor M1 is cut off to prevent current from flowing back to the power supply terminal of the first CLASS-B interface and protect the IO-Link master device.

[0046] In one embodiment, when the first CLASS-B interface is connected to the CLASS-A interface of the IO-Link master device, there is no 24V voltage input at the power supply terminal and the ground terminal of the first CLASS-B interface. The power supply terminal and the ground terminal of the IO module are used as power inputs. The power supply terminal of the IO module makes the triode Q2 conduct through the parasitic diode inside the second PMOS transistor M2, so that the second PMOS transistor M2 is turned on. The actuator power supply is connected to the power supply terminal of the IO module through the second PMOS transistor M2 for power supply, so that the comparator U1 outputs a high level and the first PMOS transistor M1 is cut off to prevent current from flowing back to the power supply terminal of the first CLASS-B interface.

[0047] An embodiment of the present invention also provides an IO-Link system, including an IO-Link slave device and an IO-Link master device described in the above embodiments; wherein, the IO-Link master device is connected to the IO-Link slave device.

[0048] It can be understood that since the IO-Link slave device described in the above embodiments supplies power outward through the bidirectional power circuit input / output port when the IO-LINK slave module with actuator power requirements is connected to the CLASS-B interface, which is consistent with the prior art solution; and when connected to the CLASS-A interface, power can be supplied to the actuator power supply of the signal output circuit by applying power externally to the bidirectional power circuit interface. Thus, the present invention improves the usability of the IO-LINK slave device, and then the IO-Link system constituted by the IO-LINK slave device also has corresponding usability, which can facilitate users to flexibly select the IO-LINK master device for matching.

[0049] The specific embodiments described above have further elaborated on the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only the specific embodiments of the present invention and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An IO-Link slave device, characterized in that: The IO-Link slave device includes a first CLASS-B interface, a bidirectional power supply circuit, a control circuit, an IO module and a signal output circuit; The first CLASS-B interface is connected to a control circuit and a bidirectional power supply circuit, the control circuit is connected to a signal output circuit, and the IO module is connected to the bidirectional power supply circuit and the signal output circuit; Wherein, if the first CLASS-B interface is connected to the CLASS-B interface of the IO-Link master device, the bidirectional power supply circuit is connected to the power supply terminal and the ground terminal of the first CLASS-B interface, so that the CLASS-B interface provides the power input of the actuator power supply of the signal output circuit; If the first CLASS-B interface is connected to the CLASS-A interface of the IO-Link master device, the bidirectional power supply circuit is connected to the power supply terminal and the ground terminal of the IO module.

2. An IO-Link slave device according to claim 1, characterized in that: The bidirectional power supply circuit includes a first control circuit and a second control circuit; The first control circuit is used to control the bidirectional power supply circuit to be connected to the power supply terminal and the ground terminal of the first CLASS-B interface; The second control circuit is used to control the bidirectional power supply circuit to be connected to the power supply terminal and the ground terminal of the IO module.

3. An IO-Link slave device according to claim 2, characterized in that: The first control circuit includes a first PMOS tube, a first resistor, a comparator, a first diode, a second diode, a third resistor, a fourth resistor and a voltage regulator tube; The power supply end of the first CLASS-B interface is respectively connected to the source of the first PMOS tube and one end of the first resistor, the other end of the first resistor is connected to the negative input end of the comparator and the cathode of the first diode, the anode of the first diode is connected to the anode of the voltage regulator tube, the anode of the second diode and the negative input end of the comparator, the gate of the first PMOS tube is connected to the output end of the comparator and the other end of the fourth resistor, the negative input end of the comparator is connected to the anode of the voltage regulator tube, the cathode of the second diode is connected to one end of the third resistor, and the other end of the third resistor is connected to the ground end of the first CLASS-B interface and then grounded; The drain of the first PMOS tube, the positive input terminal of the comparator, one end of the fourth resistor and the cathode of the voltage regulator tube are connected to each other to form a node connected to the actuator power supply.

4. An IO-Link slave device according to claim 3, characterized in that: The second control circuit includes a second PMOS tube, a second resistor, a fifth resistor, a sixth resistor, a seventh resistor and a triode; The power supply end of the IO module is connected to the source of the second PMOS tube, the drain of the second PMOS tube is connected to one end of the second resistor and one end of the fifth resistor, the gate of the second PMOS tube is connected to the other end of the second resistor and one end of the seventh resistor, the other end of the seventh resistor is connected to the emitter of the transistor, the collector of the transistor is connected to one end of the sixth resistor and the ground end of the IO module and then grounded, and the base of the transistor is connected to the other end of the fifth resistor and the other end of the sixth resistor; The drain of the first PMOS tube, the positive input terminal of the comparator, one end of the fourth resistor and the cathode of the voltage regulator are all connected to the drain of the second PMOS tube, one end of the second resistor and one end of the fifth resistor.

5. An IO-Link slave device according to claim 4, characterized in that: If the first CLASS-B interface is connected to the CLASS-B interface of the IO-Link master device, the power supply end and the ground end of the first CLASS-B interface have a 24V voltage input, the comparator outputs a low level, the first PMOS tube is turned on, the actuator power supply is powered by connecting the first PMOS tube to the ground end of the first CLASS-B interface, the second PMOS tube is turned on, the power supply end of the IO module is connected to the actuator power supply through the second PMOS tube, and 24V power is output.

6. An IO-Link slave device according to claim 5, characterized in that: The power supply end and the ground end of the first CLASS-B interface have a 24V voltage input, the voltage input of the power supply end of the IO module exceeds 24V, the power supply end of the IO module turns on the transistor through the parasitic diode in the second PMOS tube, so that the second PMOS tube is turned on, and the actuator power supply is connected to the power supply end of the IO module through the second PMOS tube; wherein the comparator outputs a high level, and the first PMOS tube is cut off to prevent current from backflowing to the power supply end of the first CLASS-B interface, thereby protecting the IO-Link master station device.

7. An IO-Link slave device according to claim 4, characterized in that: If the first CLASS-B interface is connected to the CLASS-A interface of the IO-Link master device, there is no 24V voltage input to the power supply end and the ground end of the first CLASS-B interface, and the power supply end and the ground end of the IO module are used as power input. The power supply end of the IO module turns on the transistor through the parasitic diode in the second PMOS tube to turn on the second PMOS tube. The actuator power supply is connected to the power supply end of the IO module through the second PMOS tube to supply power, so that the comparator outputs a high level and the first PMOS tube is cut off to prevent current from backflowing to the power supply end of the first CLASS-B interface.

8. The IO-Link slave device according to claim 1, characterized in that: The signal output circuit is an analog / digital output circuit.

9. An IO-Link slave device according to claim 8, characterized in that: The control circuit is used to output a control signal of a digital quantity / analog quantity output of a control signal output circuit.

10. An IO-Link system, characterized in that: It comprises an IO-Link slave device and an IO-Link master device as described in any one of claims 1 to 9; wherein the IO-Link master device is connected to the IO-Link slave device.

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