Chapter 1. Installation
14
HygroPro
II
User's Manual
Figure 13: Point-to-point HART connection where up to 2 master devices can be used with HygroPro
II
1.5.2
HART Connection Multi-Drop
The multi-drop mode allows for several devices to be connected using the same pair of wires and communicate
with the HART master. The HART devices are typically set to addresses other than 0 and the loop current mode is set
to disabled. In multi-drop mode the devices will communicate with digital HART communications only. The 4-20mA
control signal for the PV is set to a constant value of 4 mA.
Figure 14: Multi-drop HART connection showing multiple HygroPro
II
transmitters, each with a unique address,
connected to a single HART master
Summary of Contents for HydroProII
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