Appendix D. Hart Menu Maps; Hart Connection; Wiring To The Hart Circuit; Write Mode Switch - GE PanaFlow HT User Manual

Appendix D. HART Menu Maps

D.1 HART Connection
D.1.1 Wiring to the HART Circuit
When connecting a HART communicator to the wiring terminals on the PanaFlow HT electronics terminal board, the
circuit must be terminated in an appropriate resistive load, as shown in Figure 34 below. The HART communicator is
connected in parallel with that load.
Figure 34: Wiring Diagram for HART Communication
D.1.2 Write Mode Switch
The PanaFlow HT HART circuit includes a slide switch which can be used to disable write access to the instrument via
HART. This white slide switch (pictured below) is designed to lock out HART configuration access for those customers
who require this extra level of security.
Figure 35: HART Circuit Write Mode Switch. With the Write Mode switch pushed toward the Display board (as
shown), the HART circuit is in write access mode.
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