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21-1
21: PID I
NSTRUCTION
Introduction
The PID instruction implements a PID (proportional, integral, and derivative) algorithm with built-in auto tuning to deter-
mine PID parameters, such as proportional gain, integral time, derivative time, and control action automatically. The PID
instruction is primarily designed for use with an analog I/O module to read analog input data, and turns on and off a desig-
nated output to perform PID control in applications such as temperature control described in the application example on
page 21-14. In addition, when the output manipulated variable is converted, the PID instruction can also generate an ana-
log output using an analog I/O module.
Upgrade Information
Upgraded CPU modules of all-in-one 24-I/O types and slim types have an additional option for the integral start coeffi-
cient (S1+10) to execute an integral action within the proportional band. Applicable CPU modules and system program
versions are shown in the table below. For the procedure to confirm the system program version of the CPU module, see
page 29-1.
CPU Module
All-in-One Type
Slim Type
FC4A-C10R2
FC4A-C10R2C
FC4A-C16R2
FC4A-C16R2C
FC4A-C24R2
FC4A-C24R2C
FC4A-D20K3
FC4A-D20S3
FC4A-D20RK1
FC4A-D20RS1
FC4A-D40K3
FC4A-D40S3
System Program Version
—
—
202 or higher
202 or higher
201 or higher
•
Special technical knowledge about the PID control is required to use the PID function of the
MicroSmart
. Use of the PID function without understanding the PID control may cause the
MicroSmart
to perform unexpected operation, resulting in disorder of the control system, dam-
age, or accidents.
•
When using the PID instruction for feedback control, emergency stop and interlocking circuits
must be configured outside the
MicroSmart
. If such a circuit is configured inside the
MicroSmart
,
failure of inputting the process variable may cause equipment damage or accidents.
Warning
Summary of Contents for FC4A-C10R2
Page 1: ...FC4A SERIES Micro Programmable Logic Controller User s Manual FC9Y B812 ...
Page 6: ...PREFACE 4 FC4A MICROSMART USER S MANUAL ...
Page 94: ...2 MODULE SPECIFICATIONS 2 74 FC4A MICROSMART USER S MANUAL ...
Page 184: ...6 ALLOCATION NUMBERS 6 20 FC4A MICROSMART USER S MANUAL ...
Page 218: ...8 ADVANCED INSTRUCTIONS 8 8 FC4A MICROSMART USER S MANUAL ...
Page 240: ...11 BINARY ARITHMETIC INSTRUCTIONS 11 8 FC4A MICROSMART USER S MANUAL ...
Page 244: ...12 BOOLEAN COMPUTATION INSTRUCTIONS 12 4 FC4A MICROSMART USER S MANUAL ...
Page 252: ...13 SHIFT ROTATE INSTRUCTIONS 13 8 FC4A MICROSMART USER S MANUAL ...
Page 274: ...15 WEEK PROGRAMMER INSTRUCTIONS 15 8 FC4A MICROSMART USER S MANUAL ...
Page 378: ...22 DUAL TEACHING TIMER INSTRUCTIONS 22 4 FC4A MICROSMART USER S MANUAL ...
Page 386: ...23 INTELLIGENT MODULE ACCESS INSTRUCTIONS 23 8 FC4A MICROSMART USER S MANUAL ...
Page 408: ...24 ANALOG I O CONTROL 24 22 FC4A MICROSMART USER S MANUAL ...
Page 426: ...26 COMPUTER LINK COMMUNICATION 26 6 FC4A MICROSMART USER S MANUAL ...