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9 CONTROL OPERATION INSTRUCTIONS
(2) Tracking processing
(a) The set value (SV) is converted reversely from the engineering value with the following
operation expression to calculate SVn'.
SV
'
n
(b) When all of the following conditions hold, tracking processing is performed.
1) The tracking bit (TRK) of the operation constant is 1.
2) The set value (E2) is used.
3) The operation mode (MODE) is any of MAN, AUT, CMV, CMB, CAB, LCM, LCA and
E2
SVn'
(c) When the set value (E2) is the manipulated value (MV) of the upper loop, the tracking flag
(TRKF) of the alarm detection inhibition (INH) in the upper loop turns to 1.
(3) Gain (Kp) operation processing
(a) The deviation (DV) is calculated under the following condition.
Forward operation(PN
Reverse operation(PN
(b) The output gain (K) is calculated under the following condition.
When |DV|
When |DV|
(4) SPI operation
SPI operation is performed with the following operation expression.
During operating time (ST)
During hold time (STHT ST)
K
: K
P
In the following case, however, note that special processing will be performed.
QnPHCPU/QnPRHCPU (First 5 digits
of the serial No. : 07031 or
In any of the following cases 1, 2, 3
1. Integral constant (I)
2. When either of MHA or MLA is
turned to 1
(MVP
3. When either of MHA or MLA is
turned to 1
(MVP
9 - 31
100
(SV
RL)
n
RH
RL
LCC.
Condition
1)
0)
Condition
GW
GW
Condition
Gain (P), T
: Integral constant (I), BT: Execution cycle ( T)
I
0 (T
I
CT
MH) and
(
DV
n
T
I
CT
ML) and
(
DV
n
T
I
Operation expression
DV
E1
SV
n'
DV
SV
E1
n'
Operation expression
K
GG
(1
GG) GW
K
1
|DV|
BW
K
{(DV
P
BW
0 (loop tag past value memory is not set.)
Condition
QnPHCPU/QnPRHCPU (First 5 digits
of the serial No. : 07032 or later)
In any of the following cases 1, 2, 3
0)
1. Integral constant (I)
2. When either of MHA2 or MLA2 is
turned to 1
0)
(MVP
MH) and
3. When either of MHA2 or MLA 2
is turned to 1
0)
(MVP
ML) and
Operation expression
BT
DV
)
DV
}
n
n-1
n
T
I
0 (T
0)
I
CT
(
DV
0)
n
T
I
CT
(
DV
0)
n
T
I
MELSEC-Q
Processing
CT
DV
0
n
T
I
9 - 31
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