Mitsubishi Electric MELSEC FX3U - L Run Led [Fx 3 Uc -32 Mt-Lt(-2)]; L Err Led [Fx 3 Uc -32 Mt-Lt(-2)]

935
FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
38 Error Check Method and Error Code List
38.1 States and Colors of LEDs PLC Operation Status
31
FNC275-FNC279 Data Transfer 3
32
FNC280-FNC289 High Speed Processing 2
33
FNC290-FNC299 Extension File Register
34
FNC300-FNC305 FX
3U
-CF-ADP
35
SFC•STL Programming
36
Interrupt Function
37
Special Device
38
Error Code
A
Version Up Information
B
Execution Times
38.1.6 L RUN LED [FX3UC-32MT-LT(-2)]
*1. FX3UC-32MT-LT only.
38.1.7 L ERR LED [FX3UC-32MT-LT(-2)]
*1. FX3UC-32MT-LT only.
→ For details, refer to the Hardware Edition of the PLC main unit.
Mode LED status PLC status Action
ONLINE
Lit Data link is executing ⎯
Unlit Data link is stopped • Take action according to the L ERR LED status.
CONFIG
*1
Lit Data link is executing ⎯
Unlit Data link is stopped • Take action according to the L ERR LED status.
TEST
Lit
The self-loopback test is
normally finished.
⎯
Unlit
The self-loopback test is
abnormally finished.
(This LED is off
while the self-loopback test
is executing.)
• Make sure that the power is correctly supplied to the PLC.
• If the L RUN LED is not off even after the above check,
consult a Mitsubishi Electric Distributor.
Mode LED status PLC status Action
ONLINE
Lit
• Unit disconnected
• Outside-control-range
station error
• RD station number setting
error
• Securely connect the built-in master to remote I/O units and
remote device stations on the network.
• Make sure that the connected remote I/O units and remote
device stations are consistent with the detailed information
on remote stations.
Flickering All stations are abnormal
• Securely connect the built-in master to remote I/O units and
remote device stations on the network.
• Make sure that the connected remote I/O units and remote
device stations are consistent with the detailed information
on remote stations.
Unlit
Data link is being normally
executed
⎯
CONFIG
*1
Lit
Used station numbers
mismatch. (Remote stations
are checked while the remote
station information is edited.)
• Securely connect the built-in master to remote I/O units and
remote device stations on the network.
• Make sure that the connected remote I/O units and remote
device stations are consistent with the detailed information
on remote stations.
• Check whether remote device station numbers are within
the allowable range.
Flickering
All stations are abnormal.
(Remote stations are checked
while the remote station
information is edited.)
Unlit
Data link is being normally
executed
⎯
TEST
Lit
The self-loopback test is
abnormally finished.
• Make sure that the power is correctly supplied to the PLC.
• If the L RUN LED is on even after the above check, consult
a Mitsubishi Electric Distributor.
Unlit
The self-loopback test is
normally finished.
(This LED is off while the self-
loopback test is executing.)
⎯