read ASCII modbus (strings) over Serial COM port (RS232)

[m.wei]

Overview
This example writes and reads ASCII modbus reigster values for any devices that requires communications over standard 7-bit ASCII modbus.

Description
This can be used as a SubVI with some slight modifications to communicate with ASCII modbus instruments.

The data bit is arbitrarily set to 7 for the ASCII modbus standard.

Requirements

• LabVIEW 2012 (or compatible)

Steps to Implement or Execute Code

1. Set the right parameters for serial port and specify the modbus ASCII cmd.
2. Run the VI.

Additional Information or References
VI Block Diagram

  **This document has been updated to meet the current required format for the NI Code Exchange.**

[chaskarvkc]

Nice example