Hardware Manual COMBILOG 1020
28
RS-485 Busverbindung
A
B
A'
B'
ERR
RUN
TH. FRIEDRICHS & CO.
COMBILOG 1020
D I G I T A L
A I N 8
A I N 7
A I N 6
A I N 5
A I N 4
A I N 3
A I N 2
A I N 1
A N A L O G
S
O
U
R
C
E
SELECT
In
+
In
-
A
G
N
D
S
O
U
R
C
E
In
+
In
-
A
G
N
D
S
O
U
R
C
E
In
+
In
-
A
G
N
D
S
O
U
R
C
E
In
+
In
-
A
G
N
D
S
O
U
R
C
E
In
+
In
-
A
G
N
D
S
O
U
R
C
E
In
+
In
-
A
G
N
D
S
O
U
R
C
E
In
+
In
-
A
G
N
D
S
O
U
R
C
E
In
+
In
-
A
G
N
D
MEMORY CARD / PCMCIA
Display
2 x 16 Character
C
O
M
T
X
R
X
B
A
0
V
+
1
0.
.1
8
V
SUPPLY
RS 485
RS 232
I/
O
1
0
V
I/
O
2
0
V
I/
O
3
I/
O
4
I/
O
5
0
V
I/
O
6
0
V
0.1 AM
0
V
0
V
Figure 3.3 Connection of the datalogger to the bus
Alternatively the bus can also be connected by a "stub cable" as
shown in figure 3.4.
Owing to the removable terminal, the bus connection to other
dataloggers remains valid, even if one datalogger is replaced by
another.
Note:
When connecting the logger to the bus, the two bus inter-
faces A and B must not be interchanged.
Note:
The stub cable should be as short as possible, not longer
than 30 cm (12 inch).
RS-485 bus connection
Summary of Contents for COMBILOG 1020
Page 1: ...COMBILOG 1020 Datalogger Hardware Manual Version 3 09...
Page 2: ...Hardware Manual COMBILOG 1020 2 Issue 03 11 2005 Technical data are subject to change...
Page 4: ...Hardware Manual COMBILOG 1020 4...
Page 6: ...Hardware Manual COMBILOG 1020 6...
Page 12: ...Hardware Manual COMBILOG 1020 12...
Page 86: ...Hardware Manual COMBILOG 1020 86 Bild 8 1 Example Master Slave System...
Page 169: ...Hardware Manual COMBILOG 1020 169...
Page 170: ...Hardware Manual COMBILOG 1020 170...
