Allen-Bradley MicroLogix 1200 Reference Manual page 115

Table 6.3 Pulse Train Output Error Codes
Error Non-User Recoverable
Code Fault Fault
-2 Yes No
-1 Yes No
0 --- ---
1 No No
2 No No
3 No Yes
4 No Yes
5 No No
6 No Yes
7 No Yes
PTO Error Code (ER)
Sub-Element Address
Description
ER - Error Code PTO:0.ER
PTO ER (Error Codes) detected by the PTO sub-system are displayed in
this register. The error codes are shown in the table below:
Instruction Error Description
Errors Name
No Overlap An output overlap is detected. Multiple functions are assigned to the same
Error physical output. This is a configuration error. The controller faults and the
User Fault Routine does not execute. Example: PTO0 and PTO1 are both
attempting to use a single output.
No Output An invalid output has been specified. Output 2 and output 3 are the only valid
Error choices. This is a configuration error. The controller faults and the User Fault
Routine does not execute.
Normal Normal (0 = no error present)
Yes Hardstop This error is generated whenever a hard stop is detected. This error does not
Detected fault the controller.
To clear this error, scan the PTO instruction on a false rung and reset the EH
(Enable Hard Stop) bit to 0.
Yes Output The configured PTO output (2 or 3) is currently forced. The forced condition
Forced must be removed for the PTO to operate.
Error
This error does not fault the controller. It is automatically cleared when the
force condition is removed.
No Frequency The operating frequency value (OFS) is less than 0 or greater than 20,000.
Error This error faults the controller. It can be cleared by logic within the User Fault
Routine.
No Accel/ The accelerate/decelerate parameters (ADP) are:
• less than zero
Decel
Error
• greater than half the total output pulses to be generated (TOP)
• Accel/Decel exceeds limit (See page 6-13.)
This error faults the controller. It can be cleared by logic within the User Fault
Routine.
Yes Jog Error PTO is in the idle state and two or more of the following are set:
• Enable (EN) bit set
• Jog Pulse (JP) bit set
• Jog Continuous (JC) bit set
This error does not fault the controller. It is automatically cleared when the
error condition is removed.
No Jog The jog frequency (JF) value is less than 0 or greater than 20,000. This error
Frequency faults the controller. It can be cleared by logic within the User Fault Routine.
Error
No Length The total output pulses to be generated (TOP) is less than zero. This error
Error faults the controller. It can be cleared by logic within the User Fault Routine.
Data Format Range
word (INT) -2 to 7
Using High-Speed Outputs 6-17
Type User Program
Access
status read only
Publication 1762-RM001C-EN-P