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Installation and operating manual
METPOINT
®
BDL compact
35
9.7.3.2. Digital - 4-wire SDI-interface
Connection diagram 4-wire SDI-interface
- U
V
- U
V
SDI
SDI
I
0/4 ... 20 mA
+ U
V
+ U
V
METPOINT
®
BDL
compact
Digital Board
1
2
3
4
5
6
7
8
+ I
OUT
R
+
-
4... 20 mA
L
Pin assignment - sensor
Function
Pin assignment
BDL compact
+ U
v
Plus (+) connection, voltage supply
PIN-1
+ U
V
- U
v
Minus (-) connection, voltage supply
PIN-2
- U
V
+ I
OUT
Current output
PIN-2
- U
V
SDI
Digital interface
PIN-6
SDI
9.7.4. Digital - bidirectional RS485 bus system
Connection diagram bidirectional RS485 bus system
RS485
METPOINT
®
BDL
compact
Digital Board
1
2
3
4
5
6
7
8
- U
V
- U
V
+ U
V
+ U
V
(+) A / RS485
+ A
(-) B / RS485
- B
Pin assignment - sensor
Function
Pin assignment
BDL compact
+ U
V
Plus (+) connection, voltage supply
PIN-1
+ U
V
- U
V
Minus (-) connection, voltage supply
PIN-2
- U
V
Bus A (+)
Non-inverted signal (+) from RS485 interface
PIN-7
(+) A / RS485
Bus B (-)
Inverted signal (-) from RS485 interface
PIN-8
(-) B / RS485
