SC-HG1 Series FB Library Reference Manual for Mitsubishi MELSEC iQ-R series Sequencer
WUME-SCHG1IQRFB-1
155/184
Indicator Status
Description of error
Meaning
STS1
indicator
(Green)
OFF Controller-to-controller communication
error
Check if the controllers are correctly connected.
Do not connect the communication unit without turning OFF
the master device.
Turn back ON the power.
STS2
indicator
(Red)
ON Communication unit error
Check if the controllers are correctly connected.
Do not connect the communication unit without turning OFF
the master device.
Check if the settings for sending commands to the controllers
are correctly configured. Sending commands to the
controllers requires you to correctly configure the send
commands, send data, send destinations, and destination
controllers.