Hello CodeSys Team,

I built a ModBus test-Server to test our Python Written Modbus Client. The test-Server needs special Adresses for Input registers and Holding registers. Unfortunately the manual settings at the mapped variables in the "Modbus TCP Slave Device E/A Abbild" does not really change the register addresses. I only can set them to a fix value for both (Input and Holding) in the "Allgemein" Settings.

But I need following addresses:

Holding register:
200 - 202
10400 - 10404

Input register:
100 - 103
10900 - 10910

How I can do this? In V2.3 i used to simply declare the Words at the given address.

I attached my project and a simple pymodbus script. In the current configuration it works - but I need the Holding register offset at address 200...

Thanks in advance for the help
Mario

pymodbus_test.py [515 Bytes]

ModBusTestServer.project [138.23 KiB]

Hi,
you could only specify the startadress:

Holding register:
200 - 202
- this is not possible to have gap, they are in one block

Input register:
100 - 103
- this is not possible to have gap here,, they are in one block

and I do not really understand why you need this.. just pimp you pyton to have this in one block either...?

BR
Edwin

Hi Edwin,

in need the two blocks to simulate 2 different ModBus Server our client needs to connect to. But if it is not possible I will make 2 ModBus-Test-Server.

But I cannot type the start adresses I need in the fields as you did. The program only accepts 100 as maximum in both fields?

Seems to me you have another version of the ModBus-Slave? I have this version:

Name: ModbusTCP Slave Device
Hersteller: 3S - Smart Software Solutions GmbH
Kategorien: ModbusTCP Slave Gerät
Typ: 115
ID: 0000 0002
Version: 3.5.9.0
Bestellnummer: -
Beschreibung: A device that works as a Modbus TCP Slave.
Version Konfiguration 3.5.1.0

best regards
Mario

Hi,
3.5SP10

BR
Edwin

Hi,

I have 3.5SP9 - do I need to update to get it working?

best regards
Mario

guess yes....