14 PID CONTROL/PROCESS CONTROL FUNCTION
14.2 Process Control Function
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14.2 Process Control Function
This chapter describes the process control function.
Process control by using process control function blocks
A process control function block is the function block whose functions are extended for the process control. A process control
program can be easily created by using process control function blocks.
Process control function blocks have features as follows.
• A program can be easily created by placing and connecting FB elements using various types of function block provided for
the process control.
• Since the initial value of the function block can be set in the "FB Property" window of the engineering tool, the program for
the initial value setting is not required.
• An argument of a function block can be specified using a label without considering the address of a device.
• The execution status of a tag FB can be checked and controlled by accessing the tag data from the faceplate of the
engineering tool.
For details on the process control function block, refer to the following.
MELSEC iQ-R Programming Manual (Process Control Function Blocks/Instructions)
RnCPU
RnENCPU
RnPSFCPU RnPSFCPU
RnSFCPU RnSFCPURnPCPURnPCPU
(Standard) (Safety) (Standard) (Safety)
(Redundant)
(Process)
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