Allen Bradley PLC PWM (Pulse Width Modulation) error codes



 Allen
Bradley PLC PWM (Pulse Width Modulation) error codes

 
Following
Table Shows PWM instruction Error Codes with Description.
Error Code
Error Name
Description
-2
OverlapError
An output overlap is
detected.  Multiple functions are
assigned to the same physical output. 
This is a configuration error. 
The controller faults and the User Fault Routine does not execute.
-1
Output Error
An invalid output has been
specified.  Output 2 and output 3 are
the only valid choices.  this is a
configuration error.  The controller
faults and the User Fault Routine does not execute.
0
Normal
0=No error
1
HardstopError
This error is detected whenever
a hardstop is detected.  This error
does not fault the controller.  It is
automatically cleared when the hardstop condition is removed.
2
OutputForced Error
The configured PWM output (2 or
3) is currently forced.  The forced
condition must be removed for the PWM to operate.  This error does not fault the controller.  It is automatically cleared when the force
condition is removed.
3
FrequencyError
The frequency value is less
than 0 or greater than 20,000.  This
error faults the controller.  It can be
cleared by logic within the User Fault Routine.
4
Accel/DecelError
Upon a transition to the Normal
state, the Accel/Decel is tested.  If
Accel/Decel is less than zero or greater than 50*Frequency when frequency
ramping is selected (PP=1), an Accel/Decel Error is reported.  (MicroLogix 1200 Series A and all 1500
Series B.)
5
Duty CycleError
The PWM duty cycle is either
less than zero or greater than 1000. 
This error faults the controller. 
It can be cleared by logic within the User Fault Routine
                            Sourse :Rockwell Inc.


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