Function Blocks - FM 458-1 DP
6-1
Edition 12.2003
6 Closed-loop control blocks
6.1.1 INT_M Modulo integrator for axis cycle correct integration
INT_M
Modulo value
―
DI MOD
Y
DI
―
Output
Input
―
DI X
QP
BO
―
Positive oberflow
Numerator, ratio
―
DI NM
QN
BO
―
Negative overflow
Denominator, ratio
―
DI DN
YF
W
―
Block error status
Setting value
―
DI SV
Reset
―
BO R
Set
―
BO S
Hold
―
BO H
the virtual master block INT_M is used to generate position reference
values in angular synchronism.
The block sums the input values X, weighted with ratio NM and DN.
If the sum of the modulo value MOD exceeds or falls below 0, the modulo
value is subtracted or added, and an overflow bit QP or QN is set for the
duration of the sampling time.
MOD
Modulo value, value range 1 . . .
2
30
(default: 0)
X
Input quantity of the integrator
e.g. velocity (ramp-function generator output)
(default: 0)
NM
Numerator value for the ratio (gearbox factor)
NM
∗
X may not exceed
2
31
,
value range: –
2
30
to +
2
30
(default: 1)
DN
Denominator value for the ratio (gearbox factor),
value range: –
2
30
to +
2
30
(default: 1)
SV
Setting value
Is the value which is set to the output Y with S=1.
(default: 0)
R
Reset
R=1
→
Y=0
(default: 0)
S
Setting
Bit to set the output value Y to the setting value SV
S=1
→
Y=SV (initial offset)
(default: 0)
H
Hold
Holds the instantaneous value at output Y
H=1
→
Y=Y
old
(default: 0)
Symbol
Brief description
Mode of operation
I/O
