modbus master PC program

[hello188]

Hi.

I have implemented modbus slave using modbus.c and EX_modbus_slave.c file. I want to test it on the PC master.

Currently, I am using modbus_poll trial version and it seems to work OK. The full version lets me use more than one modbus functions at a time with price $129.

Anybody using any other program??

Any recommendations??

Thank you

[hugo_br]

I am also using this program to communicate with a PIC board running Modbus Slave, however I have no answer. Have you done any Slave plate communicating with the PC? I need to send an analog channel to PC via MODBUS. Got any tips to give. I`m using a ex_modbus_slave.c I await a response. Thank you very much.
Hugo.

[RF_Developer]

I use NModbus - a C# implementation of Modbus for .net apps. It works with Visual Studio Express. Its not a standalone application, you use it to build your own .net apps. Works for me, and its free.

[hello188]

It is most likely that your hardware setup does not match your software driver setup, and your PC's setup.

Are you using RS-232C? or are you using RS-485.

I tried ex_modbus_slave.c, and it works.

I need more info to help you