Omron V530-R2000, Руководство пользователя

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V530-R2000
User’s Manual
SECTION 7
Host Communications
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Flowcharts
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Using the Serial Interface for Both Input and Output
Commands for the V530-R2000 are written to the Read Area in PLC memory. The
V530-R2000 automatically reads these commands and executes them. Reading
results are written to the PLC.
V530-R2000
Controller PLC
Unit number: 00 (fixed)
Read Area
Write Area
Checks Read Area for
command.
Returns a command.
The rest of the operation is not per-
formed if the command format is in-
correct.
Sends a command to clear.
Clears the contents of the
Read Area to all zeros.
Executes the command.
While the command is being executed, the BUSY output terminal
is ON.
Command
requires outputting
reading data?
No
Yes
Writes data to Write Area.
Returns write completed
response.
A Host Link error occurs and the ERROR output terminal turns ON if there is no response
within 5 seconds. It is assumed that the line is broken or the PLC is not working correctly.