12-1
Section
'
12-1 Alarms and Errors
An alarm code is generated if there are any errors in parameter or speed data
when the Position Control Unit is powered up or data is read from EEPROM to
the PCU’s internal RAM.
If operation is attempted with data for which an alarm has been generated, an
error code will be generated and further operation will not be possible. Error
codes can also be generated during pulse output, e.g., when an emergency stop
results from CW limit input.
Relationship between Alarms and Errors
Power up
EEPROM data is read to internal RAM.
Data check
Error check is performed.
Alarm generated
An alarm code is generated for any erroneous data.
EEPROM reading
START command
Normal data
START executed
Data corrected
EEPROM writing
The erroneous
portion of the data
is corrected.
There was an
alarm generated
for some of the
data used.
Data transfer
Normal data
Alarm data
Error generated
Data corrected
EEPROM data is read to internal
RAM by command. (See note.)
Data corrected
Alarm data
Error generated
NO
Note If the data is corrected without reading from EEPROM, operations such as
START will be enabled. The status of the following, however, will not be cleared.
•
Alarm flag ON
•
Alarm code output
•
Error LED indicator flashing
Alarms
Errors
Содержание SYSMAC C500-NC113
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