Looking for a modbus slave simulation software that can handle extended modbus id's, IE registers in the 400,000 range.

 

Peak HMI slave simulator software uses 6 digit addressing as shown in the screen shot below:



https://www.hmisys.com
click on "Download"
select "Peak HMI Slave Simulators
links to "Slave Simulator Installer"

 

Peak HMI slave simulator software uses 6 digit addressing as shown in the screen shot below:

View attachment 3566

https://www.hmisys.com
click on "Download"
select "Peak HMI Slave Simulators
links to "Slave Simulator Installer"

Thanks, that looks like it, I'll try it out

 

ModSim supports the full addressing range (1 - 65536). Note that you do not enter the 400,000 offset in ModSim, but rather select Holding Register as the Modbus Point Type.
https://www.win-tech.com/

Also, Modbus Slave (from Witte Software who makes Modbus Poll) supports 6 digit addressing.
https://www.modbustools.com/modbus_slave.html