Omron V530-R150E-3 -, Operation Manual

Page: 72 / 300

55
Communication Settings
Section 4-2
Using TXD Instructions
Commands are sent from the Programmable Controller to the V530-
R150 using TXD instructions in the Programmable Controller’s ladder
program instead of the Read Area The V530-R150 executes the
command and writes the results of processing to the Programmable
Controller. If TXD instructions are to be used to send commands, set
the Read Area to “None.”
Unit number: 00 (fixed)
TXD instruction executed in ladder program.
Executes command.
Returns write completed
response.
Set "3 bytes" for the
number bytes of
send data.
Terminal block BUSY terminal turned ON during readings.
Writes data to Write Area.
End
V530-R150 Programmable Controller
Write Area
A timeout error occurs if there is no response within 5 s
and
it is
assumed that the line is broken or the computer is not working
correctly. An error message appears on the screen and the ERR
(error) terminal turns ON.