Configuring Communication Ports; Hart Modem; Usb Cable; Communication Troubleshooting - Siemens SITRANS LUT400 Series Operating Instructions Manual

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Configuring communication ports

HART modem

Note: It is recommended that only HCF registered modems be used.
Device Address
The unique identifier of the SITRANS LUT400 on a HART network.
Values
Set the device address or poll ID on a HART network.
Prior to HART 6, the device address was set to 0 for point to point operation. For HART
Multi-drop mode, the device was set to any value other than 0 within the range. (Setting a
non-zero address forced the device into fixed current mode.)
With HART 6 and above (version 7.2 supported by LUT400), Multi-drop mode no longer
depends on the device address. (However, it is recommended that a non-zero address be
set to avoid confusion based on previous HART requirements).
To set the LUT400 in Multi-drop mode, disable
communication software tools (such as SIMATIC PDM). When
disabled, a low fixed current is used, allowing for multiple devices to be connected.
Note: Loop current mode can not be disabled via LUI or Web Browser.
4. 1 . Device Address
See

USB cable

Communications
See
Installing the USB driver

Communication troubleshooting

Communication Troubleshooting
See
1.
Communications for SITRANS LUT400 (HART) Manual (7ML19985NE01).
Page 126
SITRANS LUT400 (HART) – OPERATING INSTRUCTIONS
Range:
0 to 63 (Set within range of 0 to 15 if HART 5 master used.)
Default: 0
on page 217.
on page 24 for typical setup via USB, then follow instructions under
in the LUT400 Communications manual
on page 231 of
Loop current mode
via one of the HART
Loop current mode
1
.
Diagnosing and Troubleshooting
is
.
A5E33329501

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