Siemens SIMATIC ET 200iSP User Manual

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Figure 14-9 Location of the HART analog modules in the distributed system
14.10.5 Using HART
System environment for using HART
To operate an intelligent 󹪝eld device with HART functionality, you require the following system
environment:
Current loop 4 - 20 mA via the analog electronic modules: 4 AI I 2WIRE HART, 4 AI I 4WIRE HART
or 4 AO I HART.
The HART analog module takes over the function of a "master" by receiving the commands from
the HART parameter assignment tool, passing them on to the smart 󹪝eld device and then
returning the reply messages. The interface of the HART analog module is represented by data
records that are transferred via the I/O bus. These data records are generated or interpreted by
the HART parameter assignment tool (SIMATIC PDM).
The analog values in 16-bit format and up to 4 IEEE variables (primary or non-primary variable)
are entered in the process image of the inputs and outputs.
Analog electronic modules
14.10 Basics of HART
ET 200iSP
Operating Instructions, 11/2022, A5E00247483-AK 393

Siemens SIMATIC ET 200iSP Specifications

General

Brand	Siemens
Model	SIMATIC ET 200iSP
Category	I/O Systems
Language	English