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MELSEC-Q
10 TROUBLESHOOTING
10
10 TROUBLESHOOTING
This chapter explains the definitions of errors that may occur during data
communication between the Q series C24 and external devices, and the corrective
actions.
10.1 Checking the Status of the Serial Communication Module
10.1.1 Checking the LED ON status, communications error status, and switch setting status
of the serial communication module
This section explains how to check the status of communication between the Q series
C24 and external devices, the transmission status of the Q series C24, and the switch
setting status of the Q series C24.
When a communication problem occurs, check the error status using one of the
following procedures:
(1) Checking the module status and error codes in the detailed module
information screen of the GX Developer diagnostic functions
[Startup procedure]
GX Developer [Diagnostics] [System monitor]
Module's Detailed Information
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