MACTek BULLET™ – User Manual
DM1101010UAB
Copyright 2009-2010
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Bullet as a Standalone WirelessHART Router
The Bullet is not attached to any devices at all. It is strictly used at key points in a
WirelessHART network to help with the WirelessHART routing of packets on behalf of
other devices. This is useful when it is identified in a WirelessHART network that
additional WirelessHART devices located at key points will improve the overall network
robustness.
In this scenario, power will typically supplied by direct power, however loop powered
operation is possible.
For direct powered operation, connect the DC power supply positive terminal to the
Black wire from the Bullet, and the negative terminal to the White wire.
Note: When used in loop powered mode, The Bullet cannot control the loop current. It is
up the user to ensure that the loop current is limited to within the operating
specifications.
Bullet with a 4-20mA Analog Transmitter (non-HART)
The Bullet is connected in series with 4-20mA analog only transmitter which does not
support HART. The Bullet is capable of monitoring and reporting the analog loop current
to the WirelessHART network.
Connect the Bullet and transmitter as shown in either Figure 1: Configuration #1 or
Figure 2: Configuration #2 drawings.
Bullet with a 4-20mA HART Transmitter
The Bullet is connected in series with 4-20mA HART transmitter which also controls the
loop current. The Bullet is capable of monitoring and reporting the analog loop current to
the WirelessHART network and will also communicate wired-HART data with the
connected wired-HART sub-device.
Connect the Bullet and transmitter as shown in either Figure 1: Configuration #1 or
Figure 2: Configuration #2 drawings.
