Interface communication debugging tool and railway signal power supply panel test system

Abstract

The invention discloses an interface communication debugging tool and a railway signal power supply screen test system. The interface communication debugging tool comprises a first simulator, a second simulator and a switching power supply, the power supply output end of the switching power supply is respectively connected with the power supply input end of the first simulator and the power supply input end of the second simulator and is used for providing working power for the first simulator and the second simulator; the first simulator and the second simulator are respectively used for simulating communication between a UPS (Uninterruptible Power Supply) and a railway signal power supply screen; and the first simulator and the second simulator are connected with a communication interface on a railway signal power supply screen needing to be adjusted. According to the invention, the interface communication between the UPS and the railway signal power supply screen can be simulated, namely, the railway signal power supply screen product is debugged with the communication interface of the UPS before leaving the factory, so that the factory test of the railway signal power supply screen is realized, namely, the communication interface debugging can be completed, and the working difficulty in the on-site opening process is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of inter-device communication interface, and in particular to an interface communication debugging tool and a railway signal power supply panel test system. Background Art

[0002] Railway signal power supply screens and UPS (Uninterruptible Power Supply) are often used together in railway signal systems. For railway signal power supply screen manufacturers, UPS equipment is usually purchased from outside or shipped directly to the construction site, so it is not in the railway signal power supply screen production workshop. Different UPS equipment has different manufacturers and models. Therefore, it is almost impossible to build a real debugging environment for each set of railway signal power supply screens before leaving the factory (UPS equipment cannot be in place, that is, it cannot reach the railway signal power supply screen production workshop). Therefore, it is difficult to debug the communication interface with UPS for all railway signal power supply screen products before leaving the factory, which leads to the commissioning process before the equipment is put into use, which is often accompanied by abnormal communication between the railway signal power supply screen and UPS, increasing the difficulty of debugging on-site equipment.

[0003] Therefore, there is an urgent need to develop a technology that can solve the above technical problems. Summary of the invention

[0004] The purpose of the present invention is to provide an interface communication debugging tool and a railway signal power supply panel testing system in view of the technical defects existing in the prior art.

[0005] To this end, the present invention provides an interface communication debugging tool, comprising: a first simulator, a second simulator and a switching power supply;

[0006] The power supply output terminal of the switching power supply is connected to the power supply input terminal of the first simulator and the power supply input terminal of the second simulator respectively, and is used to provide working power for the first simulator and the second simulator;

[0007] The first simulator and the second simulator are used to simulate the communication between an uninterruptible power supply UPS and a railway signal power supply panel respectively;

[0008] The first simulator and the second simulator are connected to a communication interface on a railway signal power supply panel that needs to be adjusted;

[0009] Wherein, the DC+ positive terminal on the first simulator is connected to the L+ positive terminal on the switching power supply;

[0010] The DC-negative terminal on the first simulator is connected to the L-negative terminal on the switching power supply;

[0011] The live wire terminal L on the switching power supply is connected to the live wire terminal L on the power cord plug;

[0012] The neutral terminal N on the switching power supply is connected to the neutral terminal N on the power cord plug;

[0013] The DC+ positive terminal on the second simulator is connected to the L+ positive terminal on the switching power supply;

[0014] The DC-negative terminal on the second simulator is connected to the L-negative terminal on the switching power supply.

[0015] In addition, the present invention also provides a railway signal power supply panel test system, which includes the interface communication debugging tooling as described above, and a railway signal power supply panel;

[0016] The interface communication debugging tooling is connected to the railway signal power supply panel.

[0017] It can be seen from the technical solution provided by the present invention above that, compared with the prior art, the present invention provides an interface communication debugging tooling and a railway signal power supply panel testing system, which are scientifically designed and can realize the interface communication between the simulated UPS and the railway signal power supply panel, that is, the railway signal power supply panel product can be debugged with the UPS before leaving the factory, thereby realizing the factory testing of the railway signal power supply panel, that is, the communication interface debugging can be completed, and the difficulty of the on-site commissioning process can be reduced. It is an economical, practical, effective and adaptable technical solution with great practical significance.

[0018] The present invention is directed to the interface communication process between a railway signal power supply panel and an uninterruptible power supply UPS (UPS for short). By applying the present invention, when the railway signal power supply panel product is debugged at the communication interface with the uninterruptible power supply UPS before leaving the factory, it is not necessary for all purchased equipment (i.e., UPS equipment) to be in place, and the technical solution of joint debugging and testing can be completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The overall structural block diagram of an interface communication debugging tool provided by the present invention;

[0020] Figure 2 A schematic diagram of the electrical principle of an interface communication debugging tool provided by the present invention. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] See also Figure 1 , the present invention provides an interface communication debugging tool, comprising: a first simulator 100, a second simulator 200 and a switching power supply 300;

[0025] The power supply output terminal of the switching power supply 300 is connected to the power supply input terminal of the first simulator 100 and the power supply input terminal of the second simulator 200, respectively, for providing working power for the first simulator 100 and the second simulator 200;

[0026] The first simulator 100 and the second simulator 200 are respectively used to simulate the communication between an uninterruptible power supply UPS and a railway signal power supply panel;

[0027] The first simulator 100 and the second simulator 200 are connected to a communication interface on a railway signal power supply panel that needs to be adjusted.

[0028] In the present invention, in a specific implementation, the switching power supply 300 is connected to an external AC power grid (AC220V AC power grid) and is used to convert the AC voltage input from the external AC power grid into a direct voltage and then output it to the first simulator 100 and the second simulator 200;

[0029] In a specific implementation, the switching power supply 300 is used to implement an AC 100-240V input and a DC 24V / 5A output, and provide a DC 24V power supply for the first simulator 100 and the second simulator 200 .

[0030] In the present invention, in specific implementation, the first simulator 100 and the second simulator 200 are both provided with two RS485 communication interfaces, one RS232 communication interface, and one Ethernet interface;

[0031] The RS485 communication interface or RS232 communication interface on the first simulator 100 and the second simulator 200 is connected to the RS485 communication interface or RS232 communication interface on a railway signal power supply panel that needs to be adjusted through the RS485 bus or RS232 bus.

[0032] In the present invention, in a specific implementation, the first simulator 100 and the second simulator 200 are both touch control screens.

[0033] In terms of specific implementation, the first simulator 100 and the second simulator 200 can both adopt the MT8072iE touch screen (with built-in operating system) of the Weiluntong brand, which is mature in existing technology and has been widely used.

[0034] It should be noted that the first simulator 100 and the second simulator 200 can use the MT8072iE touch screen (with its own operating system) of the Weiluntong brand, which has two RS485 communication interfaces and one RS232 communication interface. In addition, there is an Ethernet interface for program downloading, which can also be used as a reserved interface for the Ethernet standard communication interface.

[0035] In specific implementation, the first simulator 100 and the second simulator 200 need to copy into the existing mature UPS simulation software (ie, program) in advance, so as to run the UPS simulation software (ie, program) during the test.

[0036] It should be noted that UPS simulation software is an existing and technically mature software. Specifically, the "UPS debugging tooling test software" developed by Tianjin Railway Signal Co., Ltd. can be used. The software version is: V1.00. The UPS communication interfaces that currently support simulation are: Kehua FR-UK33_GEL and KR / B1110 UPS, Zhongda HPH and NT UPS, Huawei 5000A UPS, Berkshire CHP UPS, Emerson NX, ITA2 and UL33 UPS.

[0037] The UPS simulation software "UPS debugging tooling test software" can display, store and modify the simulated "UPS data", and complete the data interaction with the railway signal power panel according to the actual interface protocol of UPS. It is worth noting that in addition to simulating the standard MODBUS protocol (such as Kehua FR-UK33_GEL UPS interface protocol), it can also simulate non-standard free interface protocols (such as Zhongda HPH UPS interface protocol).

[0038] When the UPS simulation software "UPS debugging tooling test software" is running, the first simulator 100 and the second simulator 200 can respectively simulate the functions of data collection (corresponding to the simulator's data modification), data display, interface parameter (baud rate and communication address) setting and data upload performed by a real UPS device.

[0039] In the present invention, the specific implementation is as follows: Figure 2 As shown, the DC+ positive terminal on the first simulator 100 is connected to the L+ positive terminal on the switching power supply 300;

[0040] The DC-negative terminal on the first simulator 100 is connected to the L-negative terminal on the switching power supply 300;

[0041] The live terminal L on the switching power supply 300 is connected to the live terminal L on the power cord plug (three-position plug);

[0042] The neutral terminal N on the switching power supply 300 is connected to the neutral terminal N on the power cord plug (three-position plug);

[0043] In specific implementation, the DC+ positive terminal on the second simulator 200 is connected to the L+ positive terminal on the switching power supply 300;

[0044] The DC-negative terminal of the second simulator 200 is connected to the L-negative terminal of the switching power supply 300 .

[0045] In specific implementation, the first simulator 100 and the second simulator 200 are both provided with two RS485 communication interfaces and one RS232 communication interface;

[0046] Wherein, the two RS485 communication interfaces include a first RS485 communication interface and a second RS485 communication interface;

[0047] The first RS485 communication interface includes COM2-1 pin and COM2-2 pin;

[0048] The second RS485 communication interface includes COM3-1 pin and COM3-2 pin;

[0049] Among them, the RS232 communication interface includes COM1-2 pins, COM1-3 pins and COM1-5 pins.

[0050] It should be noted that in Figure 2 In the example, for the first simulator 100 and the second simulator 200, the A pin thereon is the RS485 positive terminal, the B pin is the RS485 negative terminal, and when the level of the A pin is higher than that of the B pin, the transmission signal is 1, otherwise it is 0. The R pin is the receiving end of RS232, used for signal reception, the T pin is the sending end of RS232, used for signal transmission, and the GND pin is the common signal ground pin of the R pin and the T pin.

[0051] One end (i.e., the inner end) of COM2-1 and COM2-2 pins is connected to a pair of pins including A and B respectively; one end (i.e., the inner end) of COM3-1 and COM3-2 pins is connected to another pair of pins including A and B respectively. One end (i.e., the inner end) of COM1-2, COM1-3, and COM1-5 pins is connected to R, T, and GND respectively.

[0052] It should be noted that in Figure 2 In the figure, for the switching power supply 300, the L terminal is the live wire terminal of AC220V, which is used to connect the live wire; the N terminal is the neutral wire terminal of AC220V, which is used to connect the neutral wire; the PE terminal is the grounding terminal, which is used for grounding; L+ is the DC24V output positive terminal of the switching power supply, and L- is the DC24V output negative terminal of the switching power supply. L+ and L- are used to combine to output DC24V DC power supply.

[0053] In the present invention, in a specific implementation, the interface communication debugging tooling includes a hollow device box;

[0054] The front side of the device box is hinged with an openable front door panel;

[0055] The inner cavity of the device box is provided with a first simulator 100, a second simulator 200 and a switching power supply 300;

[0056] A power cord plug (three-position plug) is provided on the rear side of the device box;

[0057] In specific implementation, the power cord plug is connected to the switching power supply 300 through a circuit breaker;

[0058] In a specific implementation, the touch screens (eg, 12-inch touch screens) provided with the first simulator 100 and the second simulator 200 are arranged on the touch screen installation openings reserved on the front panel.

[0059] In specific implementation, a U-shaped handle is provided on the top of the device box;

[0060] In specific implementation, a plug-in terminal block JXS is provided on the rear side of the device box;

[0061] Two RS485 communication interfaces and one RS232 communication interface on the first simulator 100 and the second simulator 200 are respectively connected to the railway signal power supply panel through the plug-in terminal block JXS;

[0062] Further, two RS485 communication interfaces and one RS232 communication interface on the first simulator 100 and the second simulator 200 are respectively connected to one end (inner end) of the plug-in terminal block JXS (ie, communication connection);

[0063] It should be noted that in the present invention, the RS485 communication interface and RS232 communication interface on the first simulator and the second simulator have respectively led out the communication pins to the communication terminals through the DT-CB2005 DB9 solder-free conversion head (i.e., female Phoenix terminal block), and the communication terminals can be directly connected to the plug-in terminal block JXS through wires; of course, in addition, other mature methods of existing technologies can also be used to enable reliable communication connection between the simulator and the terminal block JXS.

[0064] It should be noted that the plug-in terminal seat JXS includes a plurality of plug-in terminals. In specific implementation, the plug-in terminal seat JXS is a 16-position terminal seat including 16 plug-in holes.

[0065] The other end (outer end) of the plug-in terminal block JXS is connected to the railway signal power supply panel (specifically, the RS485 communication interface or RS232 communication interface on the railway signal power supply panel) (i.e., communication connection, for example, can be through an RS485 bus or RS232 bus with a connector);

[0066] Further, the terminal JXS-1 and the terminal JXS-2 on the plug-in terminal seat JXS are respectively connected to the COM2-1 pin and the COM2-2 pin of the first RS485 communication interface on the first simulator 100;

[0067] The terminal JXS-3 and the terminal JXS-4 on the plug-in terminal seat JXS are respectively connected to the COM3-1 pin and the COM3-2 pin of the second RS485 communication interface on the first simulator 100;

[0068] The terminals JXS-5, JXS-6 and JXS-7 on the plug-in terminal block JXS are respectively connected to the COM1-2 pin, COM1-3 pin and COM1-5 pin of the RS232 communication interface on the first simulator 100;

[0069] Further, the terminal JXS-9 and the terminal JXS-10 on the plug-in terminal seat JXS are respectively connected to the COM2-1 pin and the COM2-2 pin of the first RS485 communication interface on the second simulator 200;

[0070] The terminal JXS-11 and the terminal JXS-12 on the plug-in terminal block JXS are respectively connected to the COM3-1 pin and the COM3-2 pin of the second RS485 communication interface on the second simulator 200;

[0071] Terminals JXS-13, JXS-14 and JXS-15 on the plug-in terminal block JXS are respectively connected to the COM1-2 pin, COM1-3 pin and COM1-5 pin of the RS232 communication interface on the second simulator 200.

[0072] It should be noted that the tooling of the present invention adopts a box structure, wherein the front door panel can be opened, and the switch power supply, circuit breaker, etc. are installed in the device box. The first simulator 100 and the second simulator 200 have a 12-inch touch screen embedded in the front door panel of the box, which is convenient for operation and display. A handle is installed on the top of the device box, and a plug-in terminal block for power supply and communication is installed on the side of the device box, which is portable and convenient for wiring.

[0073] In the present invention, the railway signal power supply screen is a mature technology equipment that has been promoted and applied in the railway signal system. The railway signal power supply screen used by the interface communication debugging tool of the present invention can be, for example, a PK type railway signal power supply screen produced by Tianjin Railway Signal Co., Ltd., which is used as the debugging work object (i.e., service object) in the present invention.

[0074] In the present invention, the switching power supply 300 can be any power supply module that is mature in the prior art and can convert the external input AC 220V voltage into a DC24V output. In specific implementation, the switching power supply 300 can be, for example, a CP-E 24 / 5.0 switching power supply product produced by ABB, which is used to provide power for the first simulator 100 and the second simulator 200.

[0075] Based on the above, the present invention also provides a railway signal power supply panel test system, which includes the interface communication debugging tooling as described above, and a railway signal power supply panel;

[0076] The interface communication debugging tooling is connected to the railway signal power supply panel.

[0077] In order to more clearly understand the technical solution of the present invention, the debugging process (ie, the simulation test process) of the present invention is described below.

[0078] The first step is to connect the first simulator 100 or the second simulator 200 to the RS485 communication interface or RS232 communication interface on a railway signal power supply screen that needs to be adjusted through the RS485 bus or RS232 bus;

[0079] Then, the first simulator 100 and the second simulator 200 are connected to the switch power supply 300, and the circuit breaker is closed to keep the power on state;

[0080] The second step is to open and run the UPS simulation software (i.e., program) installed on the first simulator 100 or the second simulator 200;

[0081] Step 3: The main interface of the UPS simulation software (i.e., program) is displayed on the touch screen of the first simulator 100 or the second simulator 200. The main interface displays all UPS manufacturers (specifically, Kehua, Zhongda, Huawei, Burke, Bernard, Easy, Emerson, Dinghan, etc.). The staff selects a specific UPS manufacturer to be debugged (for example, Kehua) on the main interface.

[0082] Step 4: For the selected UPS manufacturer (e.g., Kehua), select a UPS model to be debugged from among the various UPS models of the UPS manufacturer displayed on the display interface, such as the FR-UK33 GEL (10-60kVA) model, so as to drive and run the software program part corresponding to the model that has been pre-installed in the simulator, so that the first simulator 100 or the second simulator 200 can simulate the UPS device of this manufacturer and this model, and communicate with the railway signal power panel;

[0083] Among them, the UPS models included by Kehua manufacturer may include, for example, FR-UK33 GEL (10-60kVA), KR / B3320-J, KR / B1110 and other models.

[0084] It should be noted that for UPS simulation software (i.e. program), after selecting the specific UPS model in the fourth step, the UPS data debugging interface will pop up. In the UPS data debugging interface, the serial port baud rate and communication address can be modified, and the analog data of the UPS can be modified arbitrarily. In the further started UPS detailed switch quantity debugging interface, the status of the alarm quantity can be modified arbitrarily.

[0085] Step 5: When debugging using the tooling of the present invention, the analog quantity and the switch quantity can be modified on the display interface (specifically, the UPS detailed switch quantity debugging interface) of the UPS simulation software (i.e., the program), and the UPS data and status can be displayed on the display interface;

[0086] At this time, the staff will determine whether the interface communication between the railway signal power supply screen and the UPS is abnormal by checking whether the UPS data and status displayed on the railway signal power supply screen are consistent with the data and status displayed on the display interface of the simulator touch screen on the tooling. If they are consistent, it means that the interface communication between the two is normal. Otherwise, if they are inconsistent, it means that the interface communication between the two is abnormal (i.e., abnormal).

[0087] Compared with the prior art, the interface communication debugging tooling and railway signal power supply panel testing system provided by the present invention have the following beneficial effects:

[0088] 1. The present invention solves the debugging problem of the railway signal power supply panel and UPS interface communication;

[0089] 2. The present invention can adopt a compact box structure, which is convenient to carry and use;

[0090] 3. The present invention supports the simulation of two hardware interface devices, RS232 and RS485;

[0091] 4. The present invention supports online modification of serial port baud rate and communication address;

[0092] 5. The present invention supports the simulation of communication interfaces of UPS devices of multiple manufacturers and models;

[0093] 6. The present invention can save the cost of transporting UPS equipment to the railway signal power supply panel manufacturer for debugging;

[0094] 7. The present invention can meet the requirements of interface communication debugging between the railway signal power supply screen and the UPS equipment before leaving the factory, greatly reduce the difficulty of on-site debugging of the railway signal power supply screen products after leaving the factory, improve the work efficiency of the commissioning personnel, and thus save considerable travel expenses.

[0095] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An interface communication debugging tool, characterized in that: include: A first simulator (100), a second simulator (200) and a switching power supply (300); The power supply output end of the switching power supply (300) is respectively connected to the power supply input end of the first simulator (100) and the power supply input end of the second simulator (200), and is used to provide working power for the first simulator (100) and the second simulator (200); The first simulator (100) and the second simulator (200) are respectively used to simulate the communication between an uninterruptible power supply UPS and a railway signal power supply panel; The first simulator (100) and the second simulator (200) are connected to a communication interface on a railway signal power supply panel that needs to be adjusted; Wherein, the DC+ positive terminal on the first simulator (100) is connected to the L+ positive terminal on the switching power supply (300); The DC-negative terminal on the first simulator (100) is connected to the L-negative terminal on the switching power supply (300); The live wire terminal L on the switch power supply (300) is connected to the live wire terminal L on the power cord plug; The neutral terminal N on the switching power supply (300) is connected to the neutral terminal N on the power cord plug; The DC+ positive terminal on the second simulator (200) is connected to the L+ positive terminal on the switching power supply (300); The DC-negative terminal on the second simulator (200) is connected to the L-negative terminal on the switching power supply (300).

2. The interface communication debugging tool as claimed in claim 1, characterized in that: The switching power supply (300) is connected to an external AC power grid and is used to convert an AC voltage input from the external AC power grid into a direct voltage and then output it to the first simulator (100) and the second simulator (200).

3. The interface communication debugging tool as claimed in claim 1, characterized in that: The first simulator (100) and the second simulator (200) are both provided with two RS485 communication interfaces, one RS232 communication interface, and one Ethernet interface; The RS485 communication interface or RS232 communication interface on the first simulator (100) and the second simulator (200) is connected to the RS485 communication interface or RS232 communication interface on the railway signal power supply panel via the RS485 bus or RS232 bus.

4. The interface communication debugging tool as claimed in any one of claims 1 to 3, characterized in that: The first simulator (100) and the second simulator (200) are both provided with two RS485 communication interfaces and one RS232 communication interface; Wherein, the two RS485 communication interfaces include a first RS485 communication interface and a second RS485 communication interface; The first RS485 communication interface includes COM2-1 pin and COM2-2 pin; The second RS485 communication interface includes COM3-1 pin and COM3-2 pin; Among them, the RS232 communication interface includes COM1-2 pins, COM1-3 pins and COM1-5 pins.

5. The interface communication debugging tool as claimed in any one of claims 1 to 3, characterized in that: A device housing including a hollow housing; The front side of the device box is hinged with an openable front door panel; The inner cavity of the device box is provided with a first simulator (100), a second simulator (200) and a switching power supply (300); A power cord plug is provided on the rear side of the device box; The power cord plug is connected to the switch power supply (300) through a circuit breaker.

6. The interface communication debugging tool as claimed in claim 5, characterized in that: The touch screens provided with the first simulator (100) and the second simulator (200) are arranged on the touch screen installation opening reserved on the front panel.

7. The interface communication debugging tool as claimed in claim 5, characterized in that: A plug-in terminal block JXS is provided on the rear side of the device box; The first simulator (100) and the second simulator (200) are respectively connected to a railway signal power supply panel via a plug-in terminal block JXS.

8. The interface communication debugging tool as claimed in claim 7, characterized in that: Two RS485 communication interfaces and one RS232 communication interface on the first simulator (100) and the second simulator (200) are respectively connected to one end of the plug-in terminal block JXS; The other end of the plug-in terminal block JXS is connected to the railway signal power supply panel.

9. The interface communication debugging tool as claimed in claim 8, characterized in that: The terminal JXS-1 and the terminal JXS-2 on the plug-in terminal seat JXS are respectively connected to the COM2-1 pin and the COM2-2 pin of the first RS485 communication interface on the first simulator (100); The terminal JXS-3 and the terminal JXS-4 on the plug-in terminal seat JXS are respectively connected to the COM3-1 pin and the COM3-2 pin of the second RS485 communication interface on the first simulator (100); The terminals JXS-5, JXS-6 and JXS-7 on the plug-in terminal seat JXS are respectively connected to the COM1-2 pin, COM1-3 pin and COM1-5 pin of the RS232 communication interface on the first simulator (100); The terminal JXS-9 and the terminal JXS-10 on the plug-in terminal seat JXS are respectively connected to the COM2-1 pin and the COM2-2 pin of the first RS485 communication interface on the second simulator (200); The terminal JXS-11 and the terminal JXS-12 on the plug-in terminal seat JXS are respectively connected to the COM3-1 pin and the COM3-2 pin of the second RS485 communication interface on the second simulator (200); Terminals JXS-13, JXS-14 and JXS-15 on the plug-in terminal seat JXS are respectively connected to the COM1-2 pin, COM1-3 pin and COM1-5 pin of the RS232 communication interface on the second simulator (200).

10. A railway signal power supply screen test system, characterized in that: It comprises the interface communication debugging tool as claimed in any one of claims 1 to 9, and a railway signal power supply panel; The interface communication debugging tooling is connected to the railway signal power supply panel.

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