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QCPU(Q Mode)~QnACPU Programming Manual (PID Control Instructions).pdf

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SAFETY CAUTIONS
REVISIONS
INTRODUCTION
CONTENTS
About Manuals
Generic Terms and Abbreviations Used in This Manual
1. GENERAL DESCRIPTION
1.1 PID Processing Method
2. SYSTEM CONFIGURATION FOR PID CONTROL
2.1 Applicable PLC CPU
3. PID CONTROL SPECIFICATIONS
3.1 PID Control by complete derivative
3.1.1 Performance specifications
3.1.2 PID operation block diagram and operation expressions
3.1.3 PID Control Instruction List
3.2 PID Control by Incomplete derivative
3.2.1 Performance specifications
3.2.2 PID operation block diagram and operation expressions
3.2.3 PID Control Instruction List
4. FUNCTIONS OF PID CONTROL
4.1 Outline of PID Control
4.2 Functions of PID Control
4.2.1 Operation method
4.2.2 Forward operation and reverse operation
4.2.3 Proportional operation (P operation)
4.2.4 Integral operation (I operation)
4.2.5 Derivative operation (D operation)
4.2.6 PID operation
4.3 Other Functions
4.3.1 Bumpless changeover function
4.3.2 MV upper/lower limit control function
4.3.3 Monitoring PID control with the AD57(S1) (QnACPU only)
4.3.4 Function for transfer to the SV storage device for the PV in manual mode
4.3.5 Changing the PID Control Data or I/O Data Setting Range (Basic model QCPU, High Performance model QCPU only)
5. PID CONTROL PROCEDURE
5.1 PID Control Data
5.1.1 Number of loops to be used and the number of loops to be executed in a single scan
5.1.2 Sampling cycle
5.2 I/O Data
6. PID CONTROL INSTRUCTIONS
7. HOW TO READ EXPLANATIONS FOR INSTRUCTIONS
8. COMPLETE DERIVATIVE PID CONTROL INSTRUCTIONS AND PROGRAM EXAMPLES
8.1 PID Control Instructions
8.1.1 PID Control Data Settings
8.1.2 PID Control
8.1.3 Monitoring PID Control Status (QnACPU only)
8.1.4 Operation Stop/Start of Designated Loop No.
8.1.5 Parameter Change at Designated Loop
8.2 PID CONTROL PROGRAM EXAMPLES (Basic model QCPU, High Performance model QCPU only)
8.2.1 System Configuration for Program Examples
8.2.2 Program Example for Automatic Mode PID Control
8.2.3 Program Example for Changing the PID Control Mode between Automatic and Manual
8.3 PID CONTROL PROGRAM EXAMPLES (QnACPU only)
8.3.1 System Configuration for Program Examples
8.3.2 Program Example for Automatic Mode PID Control
8.3.3 Program Example for Changing the PID Control Mode between Automatic and Manual
9. INCOMPLETE DERIVATIVE PID CONTROL INSTRUCTIONS AND PROGRAM EXAMPLES
9.1 PID Control Instructions
9.1.1 PID Control Data Settings
9.1.2 PID Operation
9.1.3 Operation Stop/Start of Designated Loop No.
9.1.4 Parameter Change at Designated Loop
9.2 PID CONTROL PROGRAM EXAMPLES
9.2.1 System Configuration for Program Examples
9.2.2 Program Example for Automatic Mode PID Control
9.2.3 Program Example for Changing the PID Control Mode between Automatic and Manual
APPENDIX
APPENDIX 1 PROCESSING TIME LIST
Appendix 2 Anti-Reset Windup Measure
WARRANTY
INDEX MENU
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