How to transmit a Speed Point from one IMx device to another over Modbus TCP

Summary

This article describes how to transmit a Speed Point between two IMx devices by presenting an example procedure.

Solution

1. In a @ptitude Observer Hierarchy like the one presented below, on the IMx 11, we created a Speed Point called Taco Speed Slave
   
   
   
2. Under IMx/MasCon devices:
   
   edit the IMx 11 device and set up External communication like in the screenshot below with checked Slave TCP and slave address as 11.
   
   
   
3. Click Data Export, select Register 17 and browse for the Speed Point in Hierarchy. In our example, we set Full scale to 5000 Cpm. Note that this information will be used in step 5.
   
4. Edit the IMx 12.
   Under Master > Mode from the dropdown select TCP Master.
   
   
5. Press Data import and under Digital channels tab:
   - In the Active column check the channel that under Register Nr column has the value 17, 
   - Under the Name column we named the channel Speed1
   - Under Slave name select IMx 11
   - Under Register Type select Input- Under Sensitivity [Hz] we added the calculated value described below: 
   
           "Fullscale /(32767 *60) = Sensitivity [Hz]"　
             5000 / (32676 * 60) = 0.00254320912
   
   
   
6. Finally for the Modbus Speed Master Point in Hierarchy, select Device 12 and virtual Channel 101
   
   
   
7. Now you should have a Modbus speed equal Taco Speed Slave.
   
   

 

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