Sample Pi Control (Disable Tracking For Primary Loop) (M+M_Spi) - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

Process control function blocks
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12.16
Sample PI Control (Disable Tracking for primary
loop) (M+M_SPI)
M+M_SPI
This FB performs sample PI control combining the functions of M+P_IN, M+P_PHPL, M+P_SPI, and M+P_OUT1 into a single
FB.
FBD/LD
M+M_SPI
PVN
MVN
CASIN
CASOUT
CASOUT_T
Applicable tag type
SPI
Control mode
MAN
AUT
■Block diagram
MCHG function
(M+P_MCHG)*
PVN
IN function
(M+P_IN)*
CASIN
* (M+P_ ) indicates the main structure member tag access FB which is the main component of each function.
Setting data
■Input/output variable
Variable
Description
name
PVN
Input from a module
CASIN
Primary loop SV input (Unit: %)
MVN
Output to a module
CASOUT
Cascade MV output (Unit: %)
CASOUT_T
Cascade MV output (Unit: %) (With tracking) (Indirect
address)
CAS
M+M_SPI
PHPL function
SPI function
(M+P_PHPL)*
(M+P_SPI)*

12.16 Sample PI Control (Disable Tracking for primary loop) (M+M_SPI)

CMV
OUT1 function
(M+P_OUT1)*
Recommended range
Type
-999999 to 999999
Input variable
0 to 100[%]
Input variable
OUT1_NMIN to
Output variable
OUT1_NMAX
0 to 100[%]
Output variable
0 to 100[%]
Output variable
CSV
MVN
MV(%)
CASOUT
MV(%)
CASOUT_T
(Tracking)
Data type
REAL
REAL
REAL
REAL
DWORD
12 LOOP TAG
383
12

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