I am using labview+DSC to create a small control system software. One of my targets is to build a modbus server which can be accessed by other client, such as a program written by C language. The client can acquire some value of the control system. But I don’t know the protocol of modbus in labview. So I follow some examples on NI’s website to create a modbus I/O client by DSC and use another TCP server software to be a modbus server. By this, the server software can monitor the output of modbus I/O client.
I find if I set modbus I/O client to operate register like 000001, the client will output the data(Hex format) like following:
……
00 07 00 00 00 06 01 01 00 00 00 01
00 08 00 00 00 06 01 01 00 00 00 01
00 09 00 00 00 06 01 01 00 00 00 01
00 0A 00 00 00 06 01 01 00 00 00 01
……
Each line is one second's output data, in which the second columm will increase one by one. Can anyone explain what’s the meaning in the output data? It seems not like a modbus protocol?
Or where I can find the document about the definition of modbus protocolin DSC?
Thanks a lot for your help.