User`s manual

AX2200/AX2300 Instruction Manual Chapter 4 Serial Communications
CM2-AX2000-2001 (Rev.4, 4/2014) 4-1
Chapter 4 Serial Communications
HART Communications
The HART Communications Protocol (Highway Addressable Remote Trans-
ducer Protocol) is a bidirectional digital serial communications protocol. The
HART signal is based on the Bell 202 standard and is superimposed on 4-20 mA
Output 1. Peer-to-peer (analog / digital) and multi-drop (digital only) modes are
supported.
Wiring
The diagrams below detail the proper connections required for HART
communications:
Loop Powered Meter Wiring
Figure 4-1.Loop Powered Meter Wiring (HART)
Warning!
Place controls in manual
mode when making
configuration changes to
the vortex meter.