Kingfisher Plus+ Hardware Manual
Option Board H: HART Interface
The HART option board provides a Bell 202 interface to devices
supporting the HART protocol. Each HART option board can
communicate with up to 15 Hart devices. Two HART option boards can
be installed on the one RTU allowing up to 2 point-to-point circuits or 2
multi-drop circuits.
In a point-to-point installation, the loop current can be measured using an RTU analogue
input channel. If using two separate point to point circuits and reading the loop current in
each, the RTU analogue input channels must be isolated from each other.
In a multi-drop installation, the loop current is not used or measured.
For more information regarding HART configurations please refer to the
“HART Implementation Guide” available on
6.9.1 HART Board Connections
RJ45 Pin
H ART Function
1
Line +
2 to 7
n/c
8
Line -
Hardware Manual Version 7.16
http://www.servelec-semaphore.com/
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