Mitsubishi Q Mode, Руководство по программированию

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MELSEC-Q/QnA
3. PID CONTROL SPECIFICATIONS
A PID control instruction list is given in Table 3.4.
Table 3.4 PID Control Instruction List
Category
Instruction
Symbol
Ladder Format Processing Details
Execution
Condition
Number
of Basic
Steps
Subset
Processing
Page
PIDINIT S
PID
control
data
setting
PIDINIT
PIDINITP S
Sets the PID control data stored
in the word device (designated
by
S
).
Common data
setting area
For loop 1
For loop 2
For loop n
S + 1
S + 2
to
S + 11
S
+ 12
S + 21
to
S + (m+0)
to
S + (m+9)
to
S
+ 0
m=(n-1) 10+2
2 9-2
PI DCON T S
PID
operation
PIDCONT
PI DCON TP S
Executes PID operation with
the SV (set value) and the PV
(process value) designated by
S
and stores the PID
operation results in the MV
(manipulated value) area of the
word device designated by
S
.
to
S
+ 9
SV setting area
For
loop 2
For
loop n
PV setting area
MV value starage area
For
loop 1
SV setting area
PV setting area
SV setting area
PV setting area
MV value starage area
Common data
setting area
S + 10
to
S + 27
S + 28
to
S + 45
S
+ (m+0)
to
S
+ (m+17)
MV value starage area
S
+ 0
m=(n-1) 18+10
2 9-3
PID57 S1
n
S2
Monitoring PID57
PID57P
S1
n
S2
Monitors the PID operation
results for the AD57 (S1)
(designated by
n ).
n
: First I/O number of the
AD57(S1)
S1
: Monitor screen number
1:Loop 1 to loop 8
2:Loop 9 to loop16
3:Loop17 to loop24
4:Loop25 to loop32
S2 : Initial screen display
request
4 9-5