Indicator Patterns - YASKAWA MP210 Series User Manual

5.1.5 Indicator Patterns

The MP2100/MP2100M performs a variety of diagnostics at startup. If an error is found, the S1 LED indicator
flashes red. The number of times the indicators flash differs depending on the error details, so error details can be
determined from counting the number of flashes. The following table shows details of MP2100/MP2100M LED
indicator.
Note: 1. MPE720 cannot be operated when the indicators are flashing.
2. For information on errors and countermeasures, refer to 6.3.3 LED Indicators.
Type
S1
(Green)
Not lit
Not lit
Not lit
Normal
Lit
Lit
Not lit
Not lit
Error
Not lit
∗
−
Alarm
Lit
* A dash (–) means not specified.
Indicator
S1 S2
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 Lit Not lit Not lit
Flash-
Not lit Not lit Not lit
ing
Flash- Flash-
Not lit Not lit
ing ing
∗ ∗ ∗
Lit
− − −
Not lit Not lit Lit Not lit
5.1 Startup Sequence and Basic Operation
Indicator Details
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 flashes 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 flashes 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 seconds or longer after
turning ON the power, the
hardware is faulty.
This status is established
when a STOP operation is
performed using a switch or
the MPE720.
–
The S1 LED indicator
lights (Red) when a failure
occurs in the CPU.
The S1 LED indicator
flashes (Red) when an error
occurs.
The S1 and S2 LED indica-
tors flash (Red) when a
self-diagnosis failure
occurs.
The BAT LED indicator
lights when the battery
voltage drops.
The S2 LED indicator
lights (Red) when a calcu-
lation or I/O error is
detected.
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