0



 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.






Post a Comment

 
Top