Hello all,

i am looking for a software which is able to simulate a modbus master on my laptop. The function should be able to forward a value from a register (e.g., Slave 1) to a register of slave 2.

i'm anewbie in modbus but still on ther run in retriving informations. first steps had already success. we are using our product for control and status of Room air conditioners.

 

What sort of Modbus are you looking for? RTU (RS-232/RS-485) or TCP (Ethernet)?

If you are looking for Modbus/TCP (Ethernet) I have a free program that you can download from the following location:

http://sourceforge.net/projects/mblogic/files/

You would want the latest release of MBTools.

The MBTools package contains a number of programs, including MBProbe. MBProbe is a web based menu driven Modbus/TCP client (master). It supports Modbus functions 1, 2, 3, 4, 5, and 6, and so can read and write registers, coils, and discrete inputs.

Documentation is here:
http://mblogic.sourceforge.net/mbtools/mbtools.html

That page includes a screen shot (the right hand screen shot at the bottom of the page).

This is a free program with a GPL license, not a limited demo. Installation and start up instructions are included in the package.

 

Hello,

The PeakHMI MODBUS Master/Slave Relay Ladder Logic program can perform this task.

http://www.peakhmi.com/

Good luck,

Mark