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INSTALLATION – DS8100 SERIAL INTERFACE
20 mA Current Loop Interface
The DS8100 has two current generators (one for transmission and one for reception),
allowing for both active and passive type connections.
The following pins of the Main Interface connector (Figure A, 15) are used for 20 mA
C.L. connections:
Pin
Name
1
DRVREF
2
CLOUT+
3
CLOUT-
4
DRVIN
7
CLIN+
8
CLIN-
9
DRVOUT
I = 20 mA
I = 20 mA
Function
current generator reference
current loop output +
current loop output -
input current generator
current loop input +
current loop input -
output current generator
DS8100
9
DRVOUT
2
C.L. OUT+
3
C.L. OUT-
DRVREF
1
4
DRVIN
7
C.L. IN+
8
C.L. IN-
MAX. 300 METERS
Figure 18 - 20 mA C.L. active connections
USER INTERFACE
2
21
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