Serial port protocol message signal test terminal block
A serial port protocol and test terminal technology, applied in the field of data communication signal debugging devices, can solve the problems of long cycle, lack of intuitiveness of secondary circuit terminal test, and low debugging efficiency.
Active Publication Date: 2017-09-15
DALIAN POWER SUPPLY COMPANY STATE GRID LIAONING ELECTRIC POWER +1
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Problems solved by technology
Due to the lack of intuitiveness of the test of the secondary circuit terminal row in the debugging process, the debugging efficiency is low and the probability of error is high
Especially in the one-to-multipoint test, the information source device needs to repeatedly simulate the action to generate the required message. In order to complete the acceptance of the signal, the operation and maintenance personnel need to know various serial ports such as 101, 103, 1801, and CDT. The message analysis method of the statute, and the protection device needs to inject the fault current into the external tester for simulation test to generate the signal message of "protection exit action". The process is cumbersome and the cycle is long
Method used
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Embodiment Construction
[0013] The present invention will be further described below in conjunction with accompanying drawing:
[0014] Such as figure 1 , 2 As shown, this embodiment takes the scheduling automation system as the background. Among them, the remote machine of the substation is used as the information source device of the serial port protocol message signal, and the front-end machine of the dispatching master station is used as the receiving device of the serial port protocol message signal. The remote machine of the substation uses the serial port IEC 101 protocol to communicate with the front-end machine of the dispatching master station. Single-point remote signaling upload in the 101 protocol. IEC 101 is a point-to-point question-and-answer serial port protocol. The communication features the main station inquiry and the factory station reply. There are two typical messages (hexadecimal) for the master station data inquiry: "10 7b 01 7c 16" and "10 5b 01 5c 16" alternately, the m...
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The invention relates to a serial port code message signal testing terminal strip which is composed of a singlechip, a USB-to-serial port chip, a serial port level conversion chip, a voice chip, a relay drive circuit, a relay, a USB interface, an operating mode selection switch, a group setting switch and a group LED display circuit, and a serial port code message signal LED display and operation circuit. The terminal strip disclosed by the invention is provided with signal LED indicating lamps and a device with a signal message reoccurrence function, a visual boundary effect of a secondary cable terminal strip during debugging can be achieved, a communication function of a serial port code message signal receiving device can be simulated, the volume of the testing terminal strip disclosed by the invention is smaller than that of the secondary cable terminal strip, the safety is high, and the testing terminal strip disclosed by the invention is simple in structure, reliable in operation and low in power consumption.
Description
technical field [0001] The invention relates to a data communication signal debugging device, in particular to a serial port protocol message signal test terminal block. Background technique [0002] In the power grid automation system, many signal transmissions between different devices or between the plant station and the master station are carried out through serial port protocol messages. At present, the usual way of point-to-point debugging of serial port protocol message signal is: the two sides of the test first capture the communication message, and then use the corresponding communication protocol analysis tool to perform message translation or manual translation to confirm the correctness of the signal. Due to the lack of intuitiveness of the test of the secondary circuit terminal row in the debugging process, the debugging efficiency is low and the probability of error is high. Especially in the one-to-multipoint test, the information source device needs to repea...
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IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/25341
Inventor 石文江
Owner DALIAN POWER SUPPLY COMPANY STATE GRID LIAONING ELECTRIC POWER