User`s manual

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MELSEC

11 TROUBLESHOOTING

11.5.2 Flowchart to use when reading from and writing to the device cannot be done using

the communication function

START

YES

Is the communication

function's return value

abnormal?

See Ch-10 ERROR CODE

Monitor the device to be accessed from

the monitoring function's (utility) device

monitor.

Also, perform a data change to see if

data can be written.

Can the device be monitored?

(Was the data written?)

Check the user program.

Did an error occur?

See Ch-10 ERROR CODE

Was it host access?

Check the board number setting for the

A80BDE-J61BT13. (See if there is

duplication with the system or another

board)

Check by following the flowchart in 11.4

for when data linking could not be

completed.