YASKAWA MP2100 Series User Manual page 391

13 Troubleshooting
13.1.3 Indicator Errors
(2) Indicator Details
The following describes details and remedies for indicators showing operating status and errors in the MP2100/
MP2100M.
Classific
S1
ation
(green) (green)
Not lit Not lit
Normal
Not lit Not lit
Not lit
Lit Not lit
Lit
Not lit Not lit
Error
Not lit Not lit
Not lit Not lit Blinking Blinking Not lit
Alarm
－
Lit Not lit
Lit Not lit
13-4
Indicator
S2 S1
S2
BAT
(red) (red)
Lit Lit Not lit
Not lit Not lit Not lit
Lit Not lit Not lit Not lit
Not lit Not lit Not lit
Lit Not lit Not lit Not lit
Not lit Lit Not lit
Not lit Blinking Not lit
Lit
－ － －
Lit Not lit Not lit
Lit Not lit Not lit
Indicator Details
Hardware reset status
Initializing
Drawing A executing
User program stopped
(Offline Stop Mode)
User program executing normally
Serious failure
Number of blinks for software error:
3: Address error (read)
4: Address error (write)
5: FPU error
6: Illegal general command
7: Illegal slot command
8: General FPU inhibited error
9: Slot FPU inhibited error
10: TLB serious error bit
11: LTB mistake (read)
12: LTB mistake (write)
13: LTB protection violation (read)
14: LTB protection violation (write)
15: Initial page write error
Hardware errors
No. of flashes
2: RAM diagnosis error
3: ROM diagnosis error
4: CPU function diagnosis error
5: FPU function diagnosis error
Battery alarm
Operation error
I/O error
Remedy
Normally the CPU activates within
10 seconds from power ON. If this
status continues for longer than this,
the problem is a user program error
or hardware failure.
Troubleshoot system errors.
This status will occur for either of the
following.
• The program was stopped from the
MPE720.
• The RUN switch was turned OFF.
This status will occur during normal
operation.
Refer to 13.2.3 Processing Flow for
a Ladder Program Error.
A hardware error has occurred.
Replace the Module.
Replace the battery.
(Refer to Chapter 12 Maintenance
and Inspection.)
Refer to 13.2.4 System Register
Configuration.
Refer to 13.2.4 System Register
Configuration.