Example Of Connection Check For Communications - Omron NX Series Network Connection Manual

5.3. Example of Connection Check for Communications

This document assumes that you uses a "ladder program" to check the connection for
communications. For details on the ladder program, please refer to Appendix 2. Ladder
Program.
The "Read code" message is sent and received between the NX Series CPU Unit and the
code reader. An overview of the operation is shown below.
CPU Unit
Project file
Ladder program
Output_RecvData
Receive data
storage area
5. Serial Communications Settings
Serial Communications Unit
Send data
Sends serial command.
< > (Read trigger
command)
Read data
Receives read data.
Code Reader
Reads code.
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