Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 167

Process control function blocks
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■Processing operation
: Performed, : Not performed
Control mode
Processing operation
Loop stop
MAN, CMV
AUT, CAS, CSV
CASDR
Control mode
Processing operation
MV tracking
MAN, CMV
AUT, CAS, CSV
CASDR
*1 An alarm (ALM) whose corresponding bit is TRUE (detected) is reset, and the alarm will not be detected.
*2 An alarm whose corresponding bit is TRUE (Valid) in the disable alarm detection (INH) is not detected.
■Output function priority
The following table shows the priority of each output function.
Priority
1
2
3
4
5
Ex.
When both of the preset MV and MV tracking functions are valid (PREMV_EN = TRUE, MVHLD_EN = TRUE), a preset
manipulated value is output because a higher priority is given to the preset MV function.
Operation error
Error code
Description
(SD0)
3400H
An invalid operation (such as division by zero) is performed.
3402H
Operation result of input data, operation constants, tag data, or inside of function blocks is a subnormal number or NaN (not a number).
3403H
An overflow has occurred.
• The use of the tight shut/full open function is recommended in a combination with an isolated analog output
module that has the range setting (extended mode) for allowing users to set a wide output range instead of
the normal range (4 to 20mA, 1 to 5V).
• To use the tight shut/full open function with a module that does not have the extended mode in the range
setting, set 0 to 20mA and 0 to 5V in the range setting and set the output conversion high/low limit values of
this FB again.
• Output processing-3 with mode switching (with input addition and compensation) is performed every
execution cycle (T).
9.4 Output Processing-3 with Mode Switching (With Input Addition and Compensation) (M+P_OUT3_)
Mode
Input addition
determination
Variation rate
Reset windup
& high/low
limiter
MV
Cascade
compensation
direct
MV reverse
Alarm
*1
*2
*2
Output function
Preset MV
MV hold
MV tracking
Cascade direct
MV compensation
Preset MV
MV hold
Auto tuning
Output
(AT2)
conversion
9 I/O CONTROL
165
9

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