https://forge.codesys.com/forge/talk/CODESYS-V2/thread/3e98d0746e/2020-02-27T20:26:57.216000ZRecent posts to [SOLVED][ModBus TCP/IP] How to read data from thermostat.2020-02-27T20:26:57.216000Z2020-02-27T20:26:57.216000Zkeberjanhttps://forge.codesys.com/u/keberjan/https://forge.codesys.comd6952911243519fc2483a5fec37dbe2f8c216578

<div class="markdown_content"><p>Hi everyone,</p> <p>I have a thermostat connected to network over ModBus TCP/IP protocol.<br/> I am trying to read some data from that thermostat with no success.</p> <p>Is there any good tutorial how to do that or can anyone help me?</p> <p>SOLVED: In ModbusTCPSlave I/O Mapping menu i had wrong setting in "älways update variables" drop down manu. If you don't have any variables in program it has to be set on "Enable 2 (Always in bus cycle task)"</p> <p>Thanks,<br/> Jan</p></div>