SC-HG1 Series FB Library Reference Manual for Mitsubishi MELSEC iQ-R series Sequencer
WUME-SCHG1IQRFB-1
152/184
Appendix 2.
Troubleshooting
Appendix 2.1.
Connection error (SC-HG1-C)
If the communication with the CC-Link master/local module fails or a module error occurs, you can check the error with
the indicators of SC-HG1-C.
Indicator Status
Description of error
Meaning
Power
supply
Indicator
(Green)
OFF Power supply error
Check the power supply wiring of the master controller.
Check whether or not the power (24V) is supplied to the
communication unit.
Check the connection between controllers.
The power supply capacity varies depending on the number
of connected controllers. Referring to the specifications of
the connected controllers, check if the power supply capacity
is sufficient.
L ERR
Indicator
(Red)
ON Station number setting error
Check whether or not the station number is outside the valid
range.
Flashes Settings changed after power ON
Change the switch settings before power ON.
Turn back ON the power for the changes to take effect.
ERR.
Indicator
(Red)
ON Communication error
Check that the CC-Link connector is correctly connected.
Check that the parameter settings and switches are correctly
configured.
Turn back ON the power.
Flashes Controller error
Check if the modules are correctly connected.
Connect the communication unit before power ON.
Turn back ON the power.
