Siemens SITRANS LR580 User Manual

Note
HAR
T con󹪝guration
• Depending on the system design, the power supply may be separate from the PLC, or integral
to it.
• HART resistance [total loop resistance, that is, cable resistance plus 250 Ohm (resistor)] must
be limited according to the allowable operating area as shown in graph under Technical
reference (Page201).
A HART network requires a polling address be con󹪝gur
ed.
D.3.4 Con󹪝guring communication ports
Note
HAR
T modem
It is recommended that only HCF registered modems be used.
Polling address
P
olling address (4.1) (Page145) (or poll ID) is a unique identi󹪝er for the device on a HART
network.
Setting 0 to 63 (Se
t within range of 0 to 15 if HART 5 master used.)
Default 0
Prior to HART 6, the polling address was set to 0 for point to point operation. For HART
multidr
op mode, the device was set to any value other than 0 within the range. (Setting a
non-zero address forced the device into 󹪝xed current mode.)
With HART 6 and above (version 7.6 supported by SITRANS LR500), multidrop mode no
longer depends on the polling address. However, it is recommended that a non-zero address
be set to avoid confusion based on previous HART requirements.
To put SITRANS LR500 into multidrop mode, disable Loop current mode (2.4.1) (Page120).
When Loop current mode is disabled, a low 󹪝xed current is used, allowing for multiple
devices to be connected. (A custom 󹪝xed current value can be entered in Loop current value
in multidrop mode (2.4.2) (Page120).)
D.3.5 Communication troubleshooting
For more information, refer to Communication troubleshooting (Page155).
Remote operation
D.3HART
SITRANS LR500 series with mA/HART
Operating Instructions, 03/2024, A5E51099898-AA 217

Siemens SITRANS LR580 Specifications

General

Brand	Siemens
Model	SITRANS LR580
Category	Transmitter
Language	English