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APP - 28 APP - 28
MELSOFT
A
PPENDICES
Appendix 6 Flowchart for the case where access cannot be performed during modem
communication
If the programmable controller CPU cannot be accessed using modem communication,
refer to the following flowchart and take corrective action.
Can normal modem communication be
executed using GX Developer?
Did the communication
test of the communication settings utility
end normally?
Did an error occur in the user program
that was executed?
Reexamine the wiring, switch settings,
parameter settings, etc.
1) Reexamine the setting of the logical
station number.
2) Take corrective action for the error
that occurred.
Reexamine the user program.
Start
End
Yes
Yes
Yes
No
No
No