2/2
B 110
GB 02883 - Edition 03- Januar
y 09
RS 232 or RS 485 link wiring
RS 485 plug wiring
9
8
7
6
4
3
2
1
5
GND
V(+)
V(-)
+ 5 V
(Masse)
(RS 485)
(RS 485)
1.5 k
Ω
1.5 k
Ω
Pin 7, 8 and 9 of RS 485 are internally and respectively connected to
pin 7, 8 and 9 of RS 232/485.
Examples of possible
connection
Serial link RS 232 with a
single monitoring system
-ONITORING
Serial link RS 485
Series type connection:
All communications will be lost if any one pump is disconnected.
RS 485
communication box
9 pin female DB
RS 485
9 pin male DB
RS 232/485
9
8
8
9
9
8
8
9
9
8
6
7
8
9
1
2
3
4
5
RS 232 / 485
RS 485
RS 232 / 485
RS 485
6
8
7
9
5
4
2
3
1
Parallel type connection:
Communication will be lost only on the disconnected pump.
RS 485
communication box
End of the line wiring
6
8
7
9
5
4
2
3
1
6
7
8
9
1
2
3
4
5
RS 485
9
8
RS 232 / 485
9 pin male DB
RS 232/485
9
8
9
8
RS 232 / 485
adixen Vacuum Products - Operating instructions - A3P Series
