Hart Function - Siemens SIMATIC ET 200SP Manual

HART function

Definition
"HART" stands for "Highway Addressable Remote Transducer". The HART protocol is a
standardized communication protocol for communication with the suitable field devices over a
bus system.
HART is a registered trademark of the HART Communication Foundation (HCF), which owns
all the rights to the HART protocol.
You can find detailed information about HART in the HART specification.
Advantages of HART
Using the AQ 4xI HART analog module provides you the following advantages:
● Connection compatibility with standard analog modules: Current loop 4 - 20 mA
● The AQ 4xI HART analog module is an interface between the S7 system and HART devices
● Communication using the HART protocol
● Communication to field devices with HART functions
Use in the system
The AQ 4xI HART analog module is used in the distributed I/O that is connected to PROFIBUS-
DP or PROFINET IO.
You can connect a HART field device to any channel:
● The AQ 4xI HART analog module operates as a HART master, monodrop;
● the HART field devices operate as HART devices.
Typical applications
The following applications are typical:
● Commissioning of field devices (centralized parameter assignment)
● Online modification of field device parameters
● Information, maintenance and diagnostic displays for the field devices
● Integration of configuration tools for field devices via the HART interface
Analog Output Module AQ 4xI HART HF
Manual, 05/2019, A5E35098013-AA
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