RobWeston
Civil/Environmental
- Jul 1, 2011
- 4
Hi All, I am working on a system where I am using a Trend XNC controller to communicate to 2 Eliwell ERT400 AHU controllers via a RS485 2 core network and the Eliwell BUS Adaptor 150's.
I have setup the Trend controller ok and the Modbus driver stores to receive data from the Eliwell ERT400 controllers.
I cannot send information from the Trend to the Eliwell controllers i.e. heating setpoint or ON/OFF signal etc.
I have all of the Eliwell doc's and register address details but cannot work out the right Modbus command or correct setting within the ERT400 to allow data to be accepted.
Has anyone had any dealings with this kind of setup ? any tips, ideas or info would be of great help at this point.
Many thanks
I have setup the Trend controller ok and the Modbus driver stores to receive data from the Eliwell ERT400 controllers.
I cannot send information from the Trend to the Eliwell controllers i.e. heating setpoint or ON/OFF signal etc.
I have all of the Eliwell doc's and register address details but cannot work out the right Modbus command or correct setting within the ERT400 to allow data to be accepted.
Has anyone had any dealings with this kind of setup ? any tips, ideas or info would be of great help at this point.
Many thanks