Startup Sequence Operation Details - YASKAWA MP2200 User Manual

5.1 Startup Sequence and Basic Operation

5.1.3 Startup Sequence Operation Details

5.1.3 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 ALM and ERR LED indicators will blink red for the specified number of times.
Refer to 5.1.4 LED Indicator Details.
( 2 ) Self-configuration
Self-configuration automatically recognizes the connected Optional Modules, and automatically creates a definitions
file. For details, refer to 5.4 Self-configuration.
The RUN LED indicator will blink green during execution of self-configuration.
( 3 ) Operation Start
When the STOP switch is set to OFF (RUN), the CPU will execute the ladder program in DWG.A. (Refer to 5.2.2 Lad-
der Program for information on DWG.A, the startup processing drawing.)
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 ) Operation Stop
MP2200 stops motion control operation when the STOP switch is ON (STOP) and in the following circumstances.
Power supply turned OFF
Power interruption
Fatal error
STOP executed from MPE720
( 5 ) Online Self-diagnosis
Self-diagnosis is performed on the following items during scan processing.
• System program (ROM) diagnosis
• Read/write diagnosis of memory (RAM)
If diagnosis results in an error, the ERR indicators will blink red. (Refer to the next page.)
5-4
Cause
Turn ON the power again.
Check the LED indicator for the cause of the error and
then turn the power OFF then ON.
Execute RUN from MPE720.
Restart method