Yaskawa MP940 - Manual (Page 56)

3.2 Start and Stop Sequences
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The MP940 start sequence and basic operations are as follows:
1. Startup Self-diagnosis
The following operations are provided for startup self-diagnosis:
• Memory (RAM) read/write diagnosis
• System program (ROM) diagnosis
• Main processor (CPU) function diagnosis
• Numeric co-processor (FCPU) function diagnosis
If an error occurs in the diagnostic result, the RDY indicator will flash the specified
number of times.
2. Online Self-diagnosis
The following operations are provided for online self-diagnosis:
• System program (ROM) diagnosis
• Main processor (CPU) function diagnosis
• Numeric co-processor (FCPU) function diagnosis
If an error occurs in the diagnostic result, the RDY indicator will flash the specified
number of times.
3. New Operation Start
Set the operation method for “New Operation” on the CP-717 System Definition
Screen. When the system is next started, the new operation will be used to start. Unlike
a continuous operation start, self-diagnostic processing is performed before DWG.A is
executed.
4. Operation Stop
The MP940 stops operating in the following cases:
• When the power supply is interrupted (see * 1.)
• When a power failure has occurred (see * 1.)
• When a fatal error has occurred (see * 2.)
• When a STOP operation has been performed from the CP-717 (see * 3.)
Note: 1. The MP940 can be restarted only by turning ON the power again.
2. Restart the system by turning the power OFF and ON. The cause
of the error can be ascertained by the indicator status.
3. Restart the system by performing a RUN operation from the CP-
717.