Is it possible to run pymodbus simulation with multipy slaves?

[0x975]

I want to run pymodbus simulation (with http ui) with multiple slaves from JSON configuration.
is it tecnicaly possible?

[janiversen]

Yes read the documentation.

[yurybura]

That means that the simulation of multiple devices is not possible. It is clear.
How to define slave address in Simulator JSON?

[janiversen]

It is possible to simulate multiple devices, just define multiple servers. You do not define the slave address because it is currently not needed.

[yurybura]

Every Modbus RTU telegram contains slave address. For RS485 connection different slave addresses are mandatory.

[yurybura]

It is possible to simulate multiple devices, just define multiple servers.

It isn't possible to open serial port several times. RS485 connection means one Modbus Master on the one side and multiple Modbus Slaves on the second side.

[janiversen]

The simulator simulates 1 device for each server, that is documented !! The simulator do NOT simulate n devices for each server, if you want that kind of functionality pull requests are welcome.

[janiversen]

You can easily define n servers with different com ports, and then connect each com port to the rs485 cable.

Just a head up, a server with only 1 com port, cannot simulate n slaves on the same rs485 line...simply because it is only have one connection, so a lot of tests would be wrong.

in tcp a server be have n slaves connected, but the server act as 1 devices with n devices connected below it.