Trying to complete our communication library, today we will show you how to communicate some HMI with our Temperature controllers.
Delta Automation have several models of Temperature controllers, in this case we need the ones with communication feature (almost all of them).
Please refer to the next link for further information.
DTC Delta temperature Controllers
Like all the communication examples, we start fixing the protocol we are going to use. In this case:
RS485 Modbus ASCII
7 Data Bits
1 Stop Bits
So once we have decided the protocol, we have to implement it on both devices.
To implement to the HMI please refer to the HMI- 3 PLC communication example post.
To implement to the DTC please download the next video, where is explained step by step how to configurate some DTC trough Computer.
HMI – DTC control
And finally here attached some DOP-B program example for control by communication some DTC (Delta Temperature Controller).
HMI – DTC control Example
And if you need to add some internal register of the DTC, and you can found it on the example, just take a look to the DTC manual, and you will found the Modbus table.
DTC Instruction Manual