Led Displays And Indicator Descriptions - Mitsubishi Electric A1SJ71DN91 User Manual

5. SETTINGS AND PROCEDURES BEFORE OPERATION

5.4 LED Displays and Indicator Descriptions

A
J71DN91
RUN
L.RUN
MS
NS
A
1SJ71DN91
RUN
L.RUN
MS
NS
This section describes the names of the LEDs at the top of the AJ71DN91 and A1SJ71DN91
front panel and provides indicator descriptions.
LED
Color Description
Name
RUN Red Normal opera-
tion display
L.RUN Red Communication
status display
MS Green Module status
display
Red Module status
display
NS Green Network status
display
Red Network status
display
LED Display Status
Lit
Not lit
Flashing
Lit
Not lit
Flashing (periodic)
Flashing (random)
Lit
Flashing
Not used
Lit Communication enabled with on-line
slave stations
Flashing Communication not enabled with on-
line slave stations
Lit Duplicate MAC ID error
Bus-off error occurred
Flashing There is a connection that has timed
out.
−
5 5
MELSEC-A
Normal operation
Unit error detected
No power supply
Parameters being loaded
Unit error detected
Parameters being loaded
Communicating
Communication stopped
Preparing for communication
Communication parameter error
DeviceNet interface unit operating
normally
Parameter error