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2 CPU MODULE INSTRUCTIONS
2.7 Process Control Instructions
2.7
Process Control Instructions
When a process control program is created, using process control function blocks is recommended.
Process control function blocks have features as follows.
• A process control program can be easily created by placing and connecting FB elements.
• 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 operation constant can be input to a label indicating a tag name without being conscious of address of a
device.
• The operating status of a tag FB can be checked and controlled by accessing the tag data from the
faceplate of an engineering tool.
For details on the process control function blocks, refer to the following.
MELSEC iQ-R Programming Manual (Process Control Function Blocks)
I/O control instructions
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Analog input processing
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Output processing 1 with mode switching
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Output processing 2 with mode switching
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Manual output
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Time proportioning
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Batch counter
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Pulse integration
Instruction symbol
Processing details
Reference
S.IN
Performs following processing to the input data (PV): range check, input limiter, engineering value
transformation, and digital filter.
Instruction symbol
Processing details
Reference
S.OUT1
Calculates MV (0 to 100%) from the input data (
MV), and performs the variation rate & upper/
lower limiter processing and output conversion processing.
Instruction symbol
Processing details
Reference
S.OUT2
Performs variation rate & upper/lower limiter processing and output conversion processing to the
input data (MV).
Instruction symbol
Processing details
Reference
S.MOUT
Reads the manipulated value (MV) from the loop tag memory and performs output conversion.
Instruction symbol
Processing details
Reference
S.DUTY
Outputs ON and OFF by changing the ON/OFF ratio in a given cycle in proportion to the input data
(0 to 100%).
Instruction symbol
Processing details
Reference
S.BC
Compares the input data with the set value, and outputs bit data when it reaches the set value.
Instruction symbol
Processing details
Reference
S.PSUM
Integrates the number of input pulses, and outputs the operation result.
Summary of Contents for MELSEC iQ-R Series
Page 1: ...MELSEC iQ R Programming Manual Instructions Standard Functions Function Blocks ...
Page 2: ......
Page 24: ...22 INDEX 2092 INSTRUCTION INDEX 2093 REVISIONS 2104 WARRANTY 2105 TRADEMARKS 2106 ...
Page 34: ...32 MEMO ...
Page 35: ...33 PART 1 PART 1 OVERVIEW This part consists of the following chapter 1 OVERVIEW ...
Page 68: ...66 1 OVERVIEW 1 5 Precautions on Programming MEMO ...
Page 1448: ...1446 14 REDUNDANT SYSTEM INSTRUCTIONS 14 2 Disabling Enabling System Switching MEMO ...
Page 1972: ...1970 33 TIME DATA TYPE FUNCTIONS 33 4 Division MEMO ...
Page 2067: ...APPX Appendix 5 PID Control Program Examples 2065 A 252 Set PID control data for loop 2 ...
Page 2109: ......