System Configuration; Hart Communication - Siemens SITRANS LR260 Operating Instructions Manual

Description

3.5 HART communication

● Coal
● Solids and liquids bulk storage vessels
3.4

System configuration

Typical PLC/mA configuration with HART
①
②
③
④
⑤
Depending on the system design, the power supply may be separate from the PLC, or integral
1)
to it.
Loop resistance (total of cable resistance plus 250 Ohm [resistor]) must be less than 550 Ohm
2)
for the device to function properly.
3.5 HART communication
This device supports HART communication protocol. For more information, see HART
Communication (https://fieldcommgroup.org/).
22
SITRANS LR260
Power supply
1)
Active PLC
HART modem
HART communicator
SITRANS LR260 with mA/HART
Operating Instructions, 11/2019, A5E32337683-AD