Indicator Patterns - YASKAWA MP2100 Series User Manual

6.2.3 Indicator Patterns

The MP2100/MP2100M makes a number of determinations at startup. If an error is detected, the S1 indicator
will blink red and the error content will be indicated by the number of times the indicator blinks. When the indi-
cator is blinking, the MPE720 cannot be operated. For details on the error content and the action to be taken, see
Chapter 12 Maintenance and Inspection and Chapter 13 Troubleshooting. The following table shows the
MP2100/MP2100M indicators.
Type
S1
(Green)
Not lit
Normal
Not lit
Not lit
Lit
Lit
Not lit
Error
Not lit
Not lit
Alarm
－
Lit
Indicator
S2 S1
S2
BAT
(Red) (Red)
(Green)
Not lit Lit Lit Not lit
Not lit Not lit Not lit Not lit
Lit Not lit Not lit Not lit
Not lit Not lit Not lit Not lit
Lit Not lit Not lit Not lit
Not lit Not lit Lit Not lit
Not lit Not lit Blink- Not lit
ing
Not lit Blink- Blink- Not lit
ing ing
Lit
－ － －
Not lit Lit Not lit Not lit
6.2 Startup Sequence and Basic Operation
Meaning
Hardware reset status
Initial execution
Execute of drawing A
The user program is stopped
(offline stop mode).
The user program is executing nor-
mally.
A serious error has occurred.
Number of blinks when software
error occurs:
3: Address read error
4: Address write error
5: FPU error
6: General illegal command error
7: Slot illegal command error
8: General FPU suppression error
9: Slot FPU suppression error
10: TLB multi-bit error
11: LTB read error
12: LTB write error
13: LTB protection violation (read)
14: LTB protection violation
(write)
15: First page write error
Number of blinks when hardware
error occurs:
2: RAM diagnosis error
3: ROM diagnosis error
4: CPU function diagnosis error
5: FPU function diagnosis error
Battery alarm
Calculation error
I/O error
Remarks
If this status continues for
10 s or longer after turning
ON the power, the hard-
ware is faulty.
This status is entered when
STOP operation is per-
formed from a switch or the
MPE720.
The S1 indicator lights
(Red) when there is a fail-
ure in the CPU.
The S1 indicator blinks
(Red) when there is an
error.
The S1 and S2 indicators
blink (Red) when there is a
self-diagnosis failure.
The BAT indicator lights
when the battery voltage
drops.
The S2 indicator lights
(Red) when a calculation or
I/O error is detected.
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