Siemens SIPART DR24 User Manual

1 Technical Description
1.5 Functional Description
1.5.7 Basic Functions (Arithmetic blocks b)
Manual
42
SIP ART DR24 6DR2410
C79000-G7476-C153-03
1.5.7 Basic Functions (Arithmetic blocks b)
1.5.7.1 General
In the SIPART DR24 a library of basic functions is stored (see figure 1--18, page 42). These
basic functions can be assigned in any order to the (initially empty) 109 arithmetic blocks (see
configuring mode FdEF, chapter 3.3.6, page 152). Every basic function is marked by a short
name which appears in the FdEF cycle on dd1.
Every arithmetic block b**.F (** corresponds to 01--h9) has up to 3 inputs (data sinks) E1, E2,
E3 and one output (data source) A. Depending on the kind of function, the input and output vari-
ables are digital (identification #, dotted lines) or analog (identification ∩, continuous lines).
The unassigned inputs (data sinks) of the functions (ncon: not connected) must be linked with
data sources in the configuring mode FCon. Some data sinks are defaulted with values or log-
ical signals (Hi, Lo), which correspond to frequent applications. These inputs can be overwritten
in the FCon mode or their defaulting retained.
Function name
Outputs
Data sources
Inputs
Data sink
No. in the cycle
Meter number of the
arithmetic block b
E
1
E
2
E
3
A
∩ analog variable, # binary variable
b.F
n
.1
.2
.3
.A
---
--
Figure 1--17 Format of an arithmetic block
A=(E1-E2) ⋅ E3
A=|E1| E2 = Hi (t = 0) ! A=E1(t=0)
E2 = Lo, A = E1
A=E1∧ E2 ∧ E3
A = E1+E2+E3
A=HiifE1≥ E2+H/2
E3 Hysteresis
E2: metering pulse (pos. edge)
E3: Reset (pos. edge)
E1 = Hi: block; m = 0001
ncon
A
E
n
.A
∩
---
∩ .1
b.F
--
AbS
0.000
ncon
ncon
+
+
+
.A∩
b.F
--
∩ .1
∩ .2
∩ .3
n
---
Add
ncon
Lo
.A∩
b.F
--
∩ .1
# .2
n
---
AMEM
ncon
1.000
x
ncon
.A∩
b.F
--
∩ .1
∩ .2
∩ .3
n
---
AMPL
+
-
ncon
&
Hi
ncon
.A#
b.F
--
# .1
# .2
# .3
n
---
And
ncon
ncon
Lo
.A∩
b.F
--
∩ .1
∩ .2
# .3
n
---
ASo
ncon
ncon
Lo
.A#
b.F
--
# .1
# .2
# .3
n
---
bSo
ncon
ncon
0.010
H
.A#
b.F
--
∩ .1
∩ .2
∩ .3
n
---
CoMP
+
-
+m
CT
ncon
Lo
Lo
m
R
&
.A∩
b.F
--
# .1
# .2
# .3
n
---
CoUn
Figure 1--18 Basic functions of the SIPART DR24

Siemens SIPART DR24 Specifications

General

Brand	Siemens
Model	SIPART DR24
Category	Controller
Language	English