Omron V530-R160E User Manual page 237

 Using TXD Instructions
This is a method in which commands are not set in the Read Area but are actively sent from the
programmable controller to the controller.
Set the Read Area to None.
F160
Controller
Executes command.
While the command is being executed, the BUSY signal of the parallel
I/O interface is ON.
Writes data to the Write Area.
END
Communication with the Host
[Write Area]
Programmable Controller
Unit number: 00 (Fixed)
Issue the TXD command.
Set "3 bytes" for the number
bytes of send data.
Returns write completed
response.
A timeout error occurs if there is no response within
5 seconds and it is assumed that the line is broken or
the programmable controller is not working correctly.
An error message is displayed on the screen and the ERR
signal of the parallel I/O interface is turned ON.
SECTION 8
V530-R160
235
Operation Manual