Hart Applications - Siemens SIMATIC ET 200SP HA Manual

HART function

6.2 HART applications

6.2 HART applications
System environment for the use of HART
To use an intelligent field device with HART functionality, you require the following system
environment:
● 4 to 20 mA current loop
● Connecting measuring transmitters to the I/O module
HART parameter assignment tool "Client":
You can assign the HART parameters using an external handheld operating device (HART
Handheld) or a HART configuration tool (PDM). Both assume the function of a "client":
The parameter assignment tool affects the entire I/O module; the HART handheld is connected
in parallel to the field device.
PDM (Process Device Manager) is available standalone or integrated in STEP 7 HW Config.
In the latter case, PDM is opened from HW Config.
HART system integration:
The I/O module takes on the function of a "master" by receiving commands from the HART
parameter assignment tool, for example, forwarding them to the smart field device and sending
back the responses. The interface of the I/O module is made up of data records that are
transmitted internally via the ET 200SP HA IO device between IM and I/O module. The data
records must be created and interpreted by the client.
Figure 6-2
30
System environment for the use of HART
Analog Input Module AI 16xI 2-wire HART HA ( 6DL1134-6TH00-0PH1)
Manual, 11/2017, A5E39408968-AB