GF Signet 9900 H COMM Module - Manual (Page 3)

3 9900 H COMM Module Instruction Sheet
– +
9900
Connections
Loop +
Loop –
PLC
Device
(HART Master)
Hand-held device
(Secondary HART Master)
Loop +
Loop –
Loop +
Loop –
Loop +
Loop –
Device 1
Device 2
Device 3
Device 4
Red
Black
Red
Black
Red
Black
Red
Black
Red
Black
Connecting HART in Multi-Drop mode
Multi-Drop Mode
Up to four 9900 Transmitters can be connected in Multi-Drop mode using the H COMM Module.
To ensure proper operation in Multi-Drop mode, confi gure each 9900 Transmitter with its own poll address using a
confi guration tool (laptop or hand-held device).
After confi guring the 9900 Transmitter for multi-drop function, reset the Transmitter (remove power for fi ve seconds
then apply power) before use.
(Typical four-unit installation)
NOTE: From this point forward the term “9900 Transmitter” or “Transmitter” will assume the H COMM Module
is installed unless otherwise noted.