Slave ID

Hello everyone,

At the moment i am working on a modbus project.
I am trying to change my slave ID but so far without any luck.
The program i use is Modbus poll but i can't seem to figure out how to change the ID.
Does anyone have any suggestions on how to change the slave ID?
The ID needs to change from 01 to 30 (1E)

Thanks
 
There is no means of assigning a slave ID in Modbus Poll because Modbus Poll is a Modbus Master/Client program.
on-line Modbus poll user manual

Modbus master/client software applications NEVER have a slave ID because they are not slaves.

You need a Modbus Slave application if you need to simulate a slave with a slave ID.

Here's three and there are probably another dozen out there, too.

1. PeakHMI ModbusTCP/RTU slave
freeware
Download link: https://hmisys.com/

2. Simply Modbus Slave
Demo mode allows sending and receiving six request messages. The demo can be restarted to send and receive more messages.
http://www.simplymodbus.ca/RTUslave.htm

3. Modbus Tools Slave
has a 10 minute trial period that expires after 30 days.
https://www.modbustools.com/download.html
 
There is no means of assigning a slave ID in Modbus Poll because Modbus Poll is a Modbus Master/Client program.
on-line Modbus poll user manual

Modbus master/client software applications NEVER have a slave ID because they are not slaves.

You need a Modbus Slave application if you need to simulate a slave with a slave ID.

Here's three and there are probably another dozen out there, too.

1. PeakHMI ModbusTCP/RTU slave
freeware
Download link: https://hmisys.com/

2. Simply Modbus Slave
Demo mode allows sending and receiving six request messages. The demo can be restarted to send and receive more messages.
http://www.simplymodbus.ca/RTUslave.htm

3. Modbus Tools Slave
has a 10 minute trial period that expires after 30 days.
https://www.modbustools.com/download.html
Hello, sorry but i think you misunderstood me.
I have a RTU slave and i just want to change the slave ID of the module from 01 to 30 (1E).
I need to know the register number.

Thanks for the reply
 
Use the on-line Modbus poll user manual at the link above.

Scroll down to section 5 Read/Write Definition where it shows the set-up parameters and right at the top is the Slave ID setting.
 
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