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
10.1.1Checking 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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