Rockwell Automation 1770-HT8 SMART TRANSMITTER - Manual (Page 22)

Introducing the Smart Transmitter
Interface
Chapter 1
1-11
clips for DIN rail mounting
connections to 32 HART field devices in point-to-point configuration
point to point and multidrop wiring support
poll and response or burst digital transmission mode support
connector for providing loop power
interface to Analog I/O modules with 4-20 mA loop support
2 wire and 4 wire transmitters supported
The benefits of using the Smart Transmitter Interface to take advantage of
the HART protocol include the following:
extend programmable controller use in the process area by enabling
Allen-Bradley PLCs to communicate with HART field devices, thus
allowing process monitoring with ControlView or similar applications
software
Because of the added intelligence supplied by the HART field devices,
and the wide range of accurate data available from such devices,
(pressure, temperature, level, flow and density, among others),
automated processes can be monitored accurately over considerable
distances.
reduce downtime and installation time through remote wiring
verification, remote transmitter programming and simple retrofitting
capabilities of HART field devices
Many HART devices are “smart” enough to tell you what is wrong with
them, and how they can be readjusted by remote programming. They
can be, in effect, remote diagnostic tools, as well as remote repair units.
Maintenance becomes simpler and less costly since you no longer need
to send technicians out to the field to perform these tasks manually.
add Smart device capabilities to existing analog systems while
maintaining existing devices
You can add the Smart Transmitter Interface to an existing 4-20 mA
system without having to change the wiring, thus reducing installation
time and expense. Digital capabilities can be gradually implemented,
including digital process variables monitoring, without modifying field
devices.
Benefits of Using the Smart
Transmitter Interface