COMMISSIONING
108 Service Manual Part No.: 4417340 Revision 1
954 SmartServo FlexLine
FCI-HRT, HART master
7.3.7.1
Introduction
The Field Communication Instrument - HART (FCI-HRT) board is a
module that communicates with HART SmartView.
The FCI-HRT board is a HART
®1
master module that enables hybrid-
signal (both analog + digital) communication between the FlexConn
instrument and a HART sensor and VITO-data processor module, which
calculates average product- and Vapour temperatures, and optionally a
water level.
Figure 7-9
The FCI-HRT board
The HART protocol is a bi-directional master-slave communication
protocol, which is used to communicate between intelligent field
instruments and host systems.
The FCI-HRT board has a planar transformer for galvanic isolation from
the HART bus. See Figure 7-9.
LED LE1 is the board’s [Health] LED. LEDs LE2 and LE3 will be flashing
to indicate activity on the HART bus. LE2 indicates data is being
transmitted (Tx), LE3 indicates data is being received (Rx).
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