Discussion on the verification method of pressure transmitter using Modbus communication protocol
According to the verification regulation of Pressure Transmitter《JJG 882-2019》,the com-mon output of pressure transmitters is a standard electrical signal,but some also use communication pro-tocols as output signals.At this time,the standard device cannot read the communication protocol data,resulting in verification failure.The author uses VB6.0 programming language and Mscomm control to de-velop a serial port communication software,which read the output signal of the pressure transmitter,and completes the verification work.This provides a practical idea for solving such problems.
pressure transmittersRS485 interfaceModbus_RTU communication protocolVB6.0 programming language
NETL
NSTL
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