XNX Universal Transmitter
Introduction
17
Modbus
The optional Modbus interface allows the transmitter to connect
to a bus of devices and transmit data to PLCs or controllers.
(For more information, see the Modbus
Protocol Manual).
Connections to the transmitter are made through a pluggable
terminal block on the Modbus interface circuit board. Modbus
RTU protocol uses ASCII/Hex protocols for communication.
FOUNDATION Fieldbus
FOUNDATION eldbus is a digital communication system which
supports several types of messages. Unlike many traditional
systems which require a set of wires for each device, multiple
FOUNDATION eldbus devices can be connected with a
single set of wires. FOUNDATION eldbus overcomes some
of the disadvantages of proprietary networks by providing a
standardized network for connecting systems and devices.
Accessories
Refer to the Accessories/Spares section for part numbers.
Pipe Mount Kit
The pipe mount kit allows the transmitter to be mounted to pipe
from 2”-6” (50-150 mm) in diameter. The kit includes the pipe
mount bracket, two carriage bolts, nuts, and lock washers.
Calibration Gas Flow Adaptor
The calibration gas ow adaptor is used to apply calibration test
gas to the sensor. It attaches to the bottom of the sensor and
can be tted without removing the standard weatherproof cover.
See the Calibration section for details on gas calibration.
Note: FOUNDATION Fieldbus XNX transmitters require a separate power source and
cannot be powered via the bus.
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