In order to monitor the communication status of the RS232, RS485 and Ethernet port, we can enable
such function block, when the timeout period exceeds, such block shall output a high level trigger.
How to insert the com port status to the text message for displaying?
Put the “com port status” into program.
Select “BLOCKS” in the text message property block.
1.select TX or Rx and insert into the screen.
2.You can edit the text in the screen, such as TX:,RX:
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