Functional Description
This example shows how to read values from a cFP TC-120 thermocouple module inserted on a cFP-180x device through a Modbus I/O server.
All you have to do is to configure the correct alias for the shared variables so they can be linked to the correct Modbus registry address. A FieldPoint Modbus address scheme is described into the Using the cFP-180x as a Modbus Device help which location is
C:\Program Files\National Instruments\FieldPoint\documentation\Online Help\FPModbus.chm
The FieldPoint Modbus address scheme must be used in conjunction with the shared variable Modbus address scheme that is described in the following document:
Using Modbus I/O Servers (DSC and RT Modules)
Caveats and Additional Notes
For the attached example, the cFP TC-120 module is located into slot 3.Shared variable adresses have been configured as:
This example has been built in LabVIEW 8.6.1 and requires the following LabVIEW Modules/Addons:
Example code from the Example Code Exchange in the NI Community is licensed with the MIT license.
Thanks a lot! This is exactly what I was searching for. It has proven to be a very reliable way for us to communicate between our cFP-2200 and our cFP-1804, allowing us to circumvent occasional Ethernet hiccups.