Mitsubishi Electric MELSEC iQ-F FX5 - Page 603

35 CPU MODULE BUILT-IN ANALOG FUNCTION
35.5 Function (PID Control Via Instruction)
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• Relationship between the forward/backward operation and the output (MV), measured value (PV) and target value (SV)
The relationship is as follows.
■Alarm setting (for input variation and output variation)
If b1 and b2 in (s3) +1 are turned ON, the input variation and the output variation can be checked. The check is executed by
following the values of (s3) +20 to (s3) +23.
These parameters can be set in (s3)+24.
For details on operation of alarm output, refer to Page 611 Alarm output (s3)+24.
• Input variation
If the input variation alarm is used, turn ON b1 in (s3) +1, and specify the input variation alarm set value.
• Output variation
If the output variation alarm is used, turn ON b2 in (s3) +1, and specify the output variation alarm set value.
When this function is used, make sure to turn OFF b5 of (s3) +1.
Variation means (Current value) - (Previous value)
Set item Description/Setting range
Operation setting (s3)+1: b1 Input variation alarm ON: Used
OFF: Not used
Input variation alarm set value (s3)+20 Input variation (incremental) alarm
set value
0 to 32767
(s3)+21 Input variation (decremental) alarm
set value
0 to 32767
Set item Description/Setting range
Operation setting (s3)+1: b2 Output variation alarm ON: Used
OFF: Not used
(s3)+1: b5 Output value upper/lower limit setting Make sure to set it to OFF
Output variation alarm set value (s3)+22 Output variation (incremental) alarm
set value
0 to 32767
(s3)+23 Output variation (decremental) alarm
set value
0 to 32767
Measured value (PV)
Output value (MV)
Target value (SV)
Backward
operation
Forward
operation