Startup Sequence Operation Details - YASKAWA MP210 Series User Manual

5 Outline of Motion Control Systems

5.1.4 Startup Sequence Operation Details

5.1.4 Startup Sequence Operation Details
(1) Self-diagnosis at Startup
Self-diagnosis is performed on the following items after the power is turned ON.
• Read/write diagnosis of memory (RAM)
• System program (ROM) diagnosis
• Main processor (CPU) function diagnosis
• Floating point unit (FPU) function diagnosis
If diagnosis results in an error, the S1 and S2 LED indicators will flash red for the specified number of times.
For details, refer to 5.1.5 Indicator Patterns.
(2) Self-configuration
Optional Modules are recognized and definition files are generated automatically.
For details, refer to 5.4 Self-configuration.
The S2 LED indicator will flash green during execution of self-configuration.
(3) Starting an Operation
When the STOP switch is set to OFF (RUN) or changed from ON (STOP) to OFF (RUN), the CPU starts the
watchdog timer and then executes DWG.A (startup processing drawing) in the ladder program.
First scan processing is executed once DWG.A has been completed and the high-speed or low-speed scan time
has elapsed. System I/O are executed from the first scan.
(4) Stopping an Operation
MP2100/MP2100M stops motion control operation when mode switch STOP is ON (STOP) and in the following
circumstances.
Power supply turned OFF
Power interruption
Fatal error
STOP executed from MPE720
5-6
Cause
Turn ON the power again.
Determine the error by the indicator status and turn the
power OFF and ON.
Execute RUN from MPE720.
Countermeasure