35 CPU MODULE BUILT-IN ANALOG FUNCTION
35.6 Function (PID Control Via Parameter)
633
35
35.6 Function (PID Control Via Parameter)
Outline of function
PID control is performed by setting GX Works3 parameters. To make the measured value (PV) closer to the target value (SV),
the PID control calculates the output (MV) value by combining the P (proportional) action, I (integral) action, and D (derivative)
action.
In addition to "Standard PID control mode", which can be executed by the PID instruction, the PID control supports "Heating-
cooling PID control mode", which operates the outputs of two systems: heating control and cooling control. Therefore,
temperature control with higher accuracy can be realized.
For details on the firmware versions of the supported CPU modules and the software versions of the
engineering tool, refer to the following.
Page 942 Added and Enhanced Functions
Standard PID control mode
Measured value (PV)
CPU module
Parameters
Target value (SV)
Control target
PID operation
Output value (MV)
Measured value (PV)
Control target
Heating/cooling
PID operation
Output value for heating (MVh)
Output value for cooling (MVc)
Heating/cooling PID control mode
To Next Page
Loading...
