Mitsubishi Q Mode, Programming Manual

Page: 61 / 126

5 - 13
MELSEC-Q/QnA
5. PID CONTROL PROCEDURE
(2) PID control data can be set in any word device number.
However, all the data used for the corresponding loops must be set in devices
with consecutive numbers.
(3) The PID control data allocations are shown below.
(a) For incomplete derivative
Specified device 0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+11
+12
+13
+14
+15
+16
+17
+18
+19
+20
+21
+22
+23
to
+(m + 1)
+(m + 2)
+(m + 3)
+(m + 4)
+(m + 5)
+(m + 6)
+(m + 7)
+(m + 8)
+(m + 9)
Number of loops
Number of loops in 1 scan
Selection of operational expression
Sampling cycle (T
S
)
Proportional constant (K
P
)
Integral constant (T
I
)
Derivative constant (T
D
)
MV lower limit (MVLL)
MV upper limit (MVHL)
Selection of operational expression
Sampling cycle (T
S
)
Proportional constant (K
P
)
Integral constant (T
I
)
Derivative constant (T
D
)
MV lower limit (MVLL)
MV upper limit (MVHL)
Selection of operational expression
Sampling cycle (T
S
)
Proportional constant (K
P
)
Integral constant (T
I
)
Derivative constant (T
D
)
Filter coefficient ( )
MV lower limit (MVLL)
MV upper limit (MVHL)
Conmon to all loops
For loop No.1
(14 words)
For loop No.2
(14 words)
For loop No.n
(14 words)
For the total
number of
loops to be
used
to
PV change rate limit ( PVL)
MV change rate limit ( MVL)
PV change rate limit ( PVL)
MV change rate limit ( MVL)
Filter coefficient ( )
Filter coefficient ( )
PV change rate limit ( PVL)
MV change rate limit ( MVL)
m=(n-1) 14+2
0 *
0 *
0 *
Derivative gain (K
D
)
0 *
0 *
0 *
Derivative gain (K
D
)
0 *
0 *
0 *
Derivative gain (K
D
)
+(m + 0)
+(m + 10)
+(m + 11)
+(m + 12)
+(m + 13)
+24
+25
+26
+27
+28
+29
POINT
Store 0 into the " * " marked area of the PID control data.
If other than 0 is stored into the " * " marked area, an error occurs and processing is
not performed. (Error code: 4100)