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336
Process Control Instruction
Runtime Errors
Error Code
11H
Error code 0036 appears in the status file when a PID instruction runtime
error occurs. Code 0036 covers the following PID error conditions, each
of which has been assigned a unique single byte code value that appears
in the MSB of the second word of the control block. The error code is also
displayed on the PID Setup Screen in RSLogix 500.
Description of Error Condition or Conditions
1. Loop update time
Dt > 1024
Corrective Action
Change loop update time 0 < Dt < 1024
2. Loop update time
Dt = 0
12H
Proportional gain
Kc < 0
Change proportional gain Kc to 0 < Kc
13H
Integral gain (reset)
Ti < 0
Change integral gain (reset) Ti to 0 < Ti
14H
Derivative gain (rate)
Td < 0
Change derivative gain (rate) Td to 0 < Td
15H
Feed Forward Bias (FF) is out-of-range.
Change FF so it is within the range -16383 to +16383.
23H
Scaled setpoint min
MinS > Scaled setpoint max MaxS
Change scaled setpoint min MinS to
-32768 < MinS < MaxS < +32767
31H
If you are using setpoint scaling and
MinS > setpoint SP > MaxS, or
If you are using setpoint scaling, then change
the setpoint SP to MinS < SP < MaxS, or
If you are not using setpoint scaling and
0 > setpoint SP > 16383,
If you are not using setpoint scaling, then change
the setpoint SP to 0 < SP < 16383.
then during the initial execution of the PID loop, this error
occurs and bit 11 of word 0 of the control block is set.
However, during subsequent execution of the PID loop if an
invalid loop setpoint is entered, the PID loop continues to
execute using the old setpoint, and bit 11 of word 0 of the
control block is set.
41H
51H
Scaling Selected
Scaling Deselected
1. Deadband < 0, or
1. Deadband < 0, or
2. Deadband >
(MaxS – MinS)
3. Deadband > 16383
1. Output high limit < 0, or
Scaling Selected
Scaling Deselected
Change deadband to
0 < deadband <
(MaxS - MinS) < 16383
Change deadband to
0 < deadband < 16383
Change output high limit to
0 < output high limit < 100
2. Output high limit > 100
52H
1. Output low limit < 0, or
53H
Output low limit > output high limit
Change output low limit to
0 < output low limit < output high limit < 100
2. Output low limit > 100
Publication 1762-RM001F-EN-P - October 2009
Change output low limit to
0 < output low limit < output high limit < 100