Hi Friends,
We are have been developing Modbus protocol stack(TCP/IP)in ANSI C. To test our Modbus Slave, we could download some Modbus TCP/IP masters from some sites, but none of them supports the following Modbus functionalities like
1. Read File Record
2. Write File Record
3. Mask Write Registers
4. READ FIFO Queue
5. Read Device Identification
6. Read/Write Multiples Registers

Does anybody know about any Modbus TCP-IP Master Simulator tool which can be used to test the above said functionality.

Thanks,
Prasanth M V
Software Engineer

 

Automated Solutions Modbus Master ActiveX Control natively supports all the functions that you listed except Read FIFO Queue. But the control allows you to create custom Modbus functions, so you can easily implement Read FIFO Queue yourself.

http://automatedsolutions.com/products/modbusrtu.asp

-Mark
http://automatedsolutions.com