Omron SYSMAC CS1G Operation Manual page 611

Countermeasures
No. Problem
66 The speed drops The minimum pass time is
(comes to a tem- not assured.
porary stop) dur-
ing pass
(continuous)
operations.
67 When the Motion When the bit [Motion Pro-
Program is gram Start] is turned ON at
paused and then the restart, the bit [Start
restarted, it Mode] is '0' or '3'.
starts over from
the beginning
instead of con-
tinuing from the
pause.
11-2 Countermeasures
11-2-1 Error Diagnosis Function
Error Classification
Error type Operation when
error occurs
Alarm System stop
Servo OFF
Immediate stop
Deceleration stop
Execution stop
Warning Continues
Alarms
588
Probable causes
Calculate the travel time by
dividing the travel distance by
the speed, and check whether
the minimum pass time is being
satisfied.
Check the ladder program or
perform a data trace.
• The error diagnosis function stops the system if normal operations
become difficult due to system hardware or software malfunction, or stops
programs and other such operations from operating due to some other
cause.
• If an error occurs, LED output is generated, a four-digit hexadecimal
alarm code is output to the words allocated in the CIO Area and system
variable, and as a general rule, operation is stopped (by System stop,
Execution stop, Deceleration stop, Emergency stop, or servo OFF).
• The error that has occurred is stored in the system variable as the error
log. But it is not backed up. To save the error log even after a restart, use
the IORD instruction to read the error log from the CPU Unit and then it
must be saved in the CPU Unit.
MC Unit errors are classified into two types: Alarms, and warnings. Refer to
the following table for explanations of each type.
Servo OFF Notification method
Yes LED lit
Sets alarm bit and alarm code in
the allocated area.
No
• System variable
• Error log
Note But if it occurs when the
power is turned ON, only
method is the LED output.
No Sets warning bit in the allocated
area.
• The alarm status is output as LED, Alarm bit, Alarm code, and Error log.
• Alarms are categorized depending on the Alarm type and Alarm rank as
shown below:
Item to check
Calculate the minimum pass
time plus the operations in
progress, and adjust the target
distance and speed so that the
travel time will be at least that
much.
To resume program execution
from the point where it was
paused, make sure the bit [Start
Mode] is either '1' or '2' before
turning ON the bit [Motion Pro-
gram Start].
• Alarm reset.
• Turn the power supply OFF, then
ON again. (Restart)
• Replace the Unit.
• Warning does not have to be
reset.
• Cleared when the cause is
removed.
Section 11-2
Remedy
Clearing method