MACTek BULLET™ – User Manual
DM1101010UAB
Copyright 2009-2010
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FIGURE 1: Configuration #1
FIGURE 2: Configuration #2
Bullet with HART Devices in Multi-Drop Mode
In this scenario, the Bullet is connected in a HART multi-drop mode, and can support
communication with up to six wired-HART sub-devices. In Multi-drop mode the Bullet
can be configured for either LOOP POWER or DIRECT POWER. For proper HART
communication the Wired-HART sub-device requires a HART network terminating
resistor. When configured for LOOP POWER, the terminating resistor must be hard
wired into the system. When configured for DIRECT POWER, the terminating resistor
requirement can be meet by either physically wiring a resistor into the system or by
using the Bullet internal terminating resistor.