Rockwell Automation Publication 2080-UM002K-EN-E - March 2019
317
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.
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 Micro830
Страница 6: ...vi Rockwell Automation Publication 2080 UM002K EN E March 2019 Preface Notes ...
Страница 24: ...10 Rockwell Automation Publication 2080 UM002K EN E March 2019 Chapter 1 Hardware Overview Notes ...
Страница 70: ...56 Rockwell Automation Publication 2080 UM002K EN E March 2019 Chapter 4 Wire Your Controller Notes ...
Страница 88: ...74 Rockwell Automation Publication 2080 UM002K EN E March 2019 Chapter 5 Communication Connections Notes ...
Страница 190: ...176 Rockwell Automation Publication 2080 UM002K EN E March 2019 Chapter 9 Controller Security Notes ...
Страница 254: ...240 Rockwell Automation Publication 2080 UM002K EN E March 2019 Appendix A Specifications Notes ...
Страница 273: ...Rockwell Automation Publication 2080 UM002K EN E March 2019 259 Quickstarts Appendix C ...
Страница 300: ...286 Rockwell Automation Publication 2080 UM002K EN E March 2019 Appendix C Quickstarts Notes ...
Страница 330: ...316 Rockwell Automation Publication 2080 UM002K EN E March 2019 Appendix E Troubleshooting Notes ...
Страница 344: ...330 Rockwell Automation Publication 2080 UM002K EN E March 2019 Appendix F PID Function Blocks Notes ...
Страница 352: ...Rockwell Automation Publication 2080 UM002K EN E March 2019 338 Index Notes ...
Страница 353: ...Rockwell Automation Publication 2080 UM002K EN E March 2019 339 ...