Rockwell Automation 1770,D17706.5.21 SMART TRANSMITTER TOOLKI - Manual (Page 8)

Chapter 1
1-1
Introducing The Smart Transmitter Toolkit
This chapter gives you an overview of the Smart Transmitter Toolkit
that you received with your Smart Transmitter Interface (cat. no. 1770-HT1).
The Smart Transmitter Toolkit (STT) is a PLC-5 ladder logic subroutine
utility that saves development time by simplifying the communication
among Allen-Bradley PLC-5 processors, Allen-Bradley Smart Transmitter
Interfaces, and HART-compliant field devices, such as a smart transmitter
or actuator.
✔ The STT subroutine provides a shell that lets you use a PLC processor
to communicate with a HART field device, without having detailed
knowledge of the HART protocol.
✔ The STT subroutine supports the HART commands that are most
commonly used with PLC processors. The STT subroutine does not
support vendor-specific HART commands, such as totalization.
✔ STT focuses on digital data that is associated with the HART protocol.
Use Allen-Bradley Analog I/O modules to acquire 4-20mA analog data.
✔ STT does not include faceplates or operator interface screens. However,
you can configure operator interface software, such as ControlView
software, to display/modify data that is received/sent to the STT
subroutine.
✔ STT supports:
HART Universal Commands 0, 1, and 3
HART Common Practice Commands 35, 38, 43, and 44
Both long- and short-frame addressing
Both point-to-point and multi-drop configurations
Allen-Bradley
PLC-5

processors
Important: Do not view STT as a configuration tool. We assume you take
the appropriate steps to configure and calibrate the HART field device
using either Cornerstone

software or a hand-held terminal.
What's In This Chapter
What's The Smart
Transmitter Toolkit
HART Universal Commands
The functions performed by these commands
are performed by all HART devices.
HART CommonĆpractice Commands
The functions performed by these commands
may not be possible for all HART devices.
HART TransmitterĆspecific Commands
Only one or at most a few HART devices
implement these functions. The functions
performed by these commands allow each
device type to implement their own
commands for special functions, calibration,
and special data handling.
Refer to the product manual for your HART
field device for a list of supported commands.