Mode Of Operation Of The Hart Function; Hart System Configuration - Siemens SIPART Series Operating Instructions Manual

3.4.3

Mode of operation of the HART function

Note
Priority of operation / failure of power supply
• Operation at the positioner has priority over specifications from the HART communicator.
• Failure of the auxiliary power to the positioner also interrupts communications.
Function
The positioner is also available with built-in HART functionality. The HART protocol allows
you to communicate with your device using a HART communicator, PC, or programming
unit. You can do the following with your device:
● Convenient configuration
● Store configurations
● Call up diagnostic data
● Show online measured values
Communication takes place as frequency modulation on the existing signal lines for the
control values of 4 to 20 mA.
The positioner is integrated into the following parameter assignment tools:
● HART communicator
● PDM (Process Device Manager)
● AMS (Asset Management System)
3.4.4

HART system configuration

Overview
The positioner can be used in a number of system configurations:
● Stand-alone, supplied with the required auxiliary power supply; communication with
● As part of a complex system environment, e.g. SIMATIC S7
SIPART PS2 with and without HART
Operating Instructions, 10/2013, A5E00074631-11
supplementary units (handheld), for example
Description
3.4 Mode of operation
29