FloBoss 107 Instruction Manual
Revised June-2017
Inputs and Outputs
4-25
channel. A channel set as an input can be configured for use in point-to-
point or multi-drop mode. A channel set as an output can be configured
for use in point-point mode only.
In multi-drop mode, as many as five HART devices can be connected (in
parallel) to each channel. A module with all four channels in multi-drop
mode supports a maximum of twenty HART devices.
An FB107 unit equipped with a HART module is considered to be a
HART Host (primary master) interface with a Class 1 Conformance
classification. The HART module can also be configured with ROCLINK
800 Configuration Software for use as a secondary master in redundant
applications.
Note
:
ROCLINK 800 supports the ability to enable or disable the
termination resistor on the module. This resistor switch defaults to
Enabled
; set it to
Disabled
if the FB107 supports multiple
devices and termination is needed at the end device.
4.16.1 Wiring the HART Module
Figures 4-25
through
4-27
show a variety of wiring scenarios.
Figure 4-25. HART Input Point-to-Point Wiring
Figure 4-26. HART Input Multi-Drop Wiring
