54733-10BA2L
2 – 152 02.2017
1 System Description Volume 2
Fig. 1-1 Basic measuring configuration
1.1.2 Detector communication
Communication with the PCS
1
The communication with display, evaluation and control devices
takes place via a 2-wire HART
®
current interface with modulated
digital current signal (FSK-modulation of the current signals accord-
ing to the Standard Bell-202).
The level data are supplied as isolated 4-20mA current signal to the
process control system PCS.
Configuration and monitoring Configuration, parameter setting and calibration of the detectors, as
well as the output and display of the digital units of measure are
carried out either:
• via a hand-held terminal, e.g. the 375 Field Communicator by
Emerson Process Management GmbH & Co. OHG, or
• via PC and a suitable user interface for the detector, e.g. the
SIMATIC PDM software.
Volume 3 describes the Operation with HART
®
Communicator.
External
power supply
HART
®
Communicator
Process control with
SIMATIC PDM
HART
®
current output
Source in
shielding
SENSseries
LB 480
EX Zone
Con-
tainer
Tank
connected notebook
1. PCS = process control system
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