Closed-Loop Control Blocks; Int_M Modulo Integrator For Axis Cycle Correct Integration - Siemens FM 458-1 DP Manual

6 Closed-loop control blocks

6.1.1 INT_M Modulo integrator for axis cycle correct integration

Symbol
Modulo value ―DI
Numerator, ratio ― DI
Denominator, ratio ― DI
Setting value ― DI
Brief description
Mode of operation
I/O
MOD
Modulo value, value range 1 . . .
Input quantity of the integrator
X
e.g. velocity (ramp-function generator output)
NM Numerator value for the ratio (gearbox factor)
NM ∗ X may not exceed
value range: –
DN Denominator value for the ratio (gearbox factor),
value range: –
SV Setting value
Is the value which is set to the output Y with S=1.
R Reset
R=1 → Y=0
Setting
S
Bit to set the output value Y to the setting value SV
S=1 → Y=SV (initial offset)
Hold
H
Holds the instantaneous value at output Y
H=1 → Y=Y
Function Blocks - FM 458-1 DP
Edition 12.2003
INT_M
MOD
Input ― DI X
NM
DN
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.
30
2
31
2
,
30 30
2 2
to +
30 30
2 2
to +
old
Y DI ― Output
QP BO ― Positive oberflow
QN BO ― Negative overflow
YF W ― Block error status
(default: 0)
(default: 0)
(default: 1)
(default: 1)
(default: 0)
(default: 0)
(default: 0)
(default: 0)
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