Rockwell Automation Publication 2080-UM002L-EN-E - November 2021
273
Appendix
F
PID Function Blocks
The PID function block has parameter naming similar to RSLogix 500 and is
recommended for users who are already familiar with programming in
RSLogix 500. The IPIDCONTROLLER function block has the advantage of
supporting auto tune.
Table 57 - Comparison Between IPIDCONTROLLER and PID
IPIDCONTROLLER
PID
Description
Common parameters
Process
PV
Process Variable feedback
Setpoint
SP
Set Point input
Output
CV
CV output
Gains.DirectActing
Control
Control direction of process (cooling versus heating).
Gains.ProportionalGain
Gains.Kc
Controller gain for both P and I
Gains.TimeIntegral
Gains.Ti
Time integral value for I
Gains.TimeDerivative
Gains.Td
Time derivative value for D
Gains.DerivativeGain
Gains.FC
A higher filter constant makes CV output more
responsive to error. Acts like a derivative gain.
AbsoluteError
AbsoluteError
Absolute value of error
PID-specific parameters
–
CVMin
For limiting CV
CVMax
For limiting CV
AutoManual
TRUE = Normal operation of PID.
FALSE = Manual operation using CVManual.
CVManual
CV when in manual mode
Enable
TRUE = Start execution with current input parameters.
FALSE = CV equals zero.
Active
TRUE = PID state is running.
FALSE = PID state is stopped.
Error
TRUE = PID has an error.
FALSE = PID has no errors.
ErrorID
PID Error ID
Содержание Allen-Bradley Micro850
Страница 12: ...12 Rockwell Automation Publication 2080 UM002L EN E November 2021 Preface Notes ...
Страница 36: ...36 Rockwell Automation Publication 2080 UM002L EN E November 2021 Chapter 2 About Your Controller Notes ...
Страница 44: ...44 Rockwell Automation Publication 2080 UM002L EN E November 2021 Chapter 3 Install Your Controller Notes ...
Страница 120: ...120 Rockwell Automation Publication 2080 UM002L EN E November 2021 Chapter 7 Motion Control Notes ...
Страница 156: ...156 Rockwell Automation Publication 2080 UM002L EN E November 2021 Chapter 9 Controller Security Notes ...
Страница 184: ...184 Rockwell Automation Publication 2080 UM002L EN E November 2021 Chapter 10 Using microSD Cards Notes ...
Страница 226: ...226 Rockwell Automation Publication 2080 UM002L EN E November 2021 Appendix C Quickstarts 10 Click Finish to complete ...
Страница 248: ...248 Rockwell Automation Publication 2080 UM002L EN E November 2021 Appendix C Quickstarts Notes ...
Страница 262: ...262 Rockwell Automation Publication 2080 UM002L EN E November 2021 Appendix D User Interrupts Notes ...
Страница 272: ...272 Rockwell Automation Publication 2080 UM002L EN E November 2021 Appendix E Troubleshooting Notes ...