Operation TMT162
16 Endress+Hauser
Setup hardware fault conditioning using jumper J2
The failure mode conditioning setup using the jumper is only active when the microcontroller fails.
!
Note!
Please check that the hardware and software failure mode conditioning correspond with each other.
Hardware setup using jumper J3 (only for units without display)
Using jumper 3 the minimum operating voltage can be reduced from 11 V to 8 V.
5.3 Communication using the HART
®
protocol
The setup and measured value read out of the measuring device is done using the HART
®
protocol.
The digital communication is done using the 4 to 20 mA current output HART
®
(see Figs. 5 and 6).
There are a number of possible setup methods available to the user:
• Operation using the universal handheld module "HART
®
Communicator DXR275/375".
• Operation using a PC combined with Endress+Hauser operating software, e.g. 'FieldCare' or
'ReadWin
®
2000' as well as a HART
®
modem, e.g. 'Commubox FXA191'.
• Operating programs of other manufacturers ('AMS', Fisher Rosemount; 'SIMATIC PDM',
Siemens).
!
Note!
If communication errors occur in the Microsoft
®
Windows NT
®
Version 4.0 and Windows
®
2000
operating systems the following measure is to be taken:
Switch off setting "FIFO active".
In order to do this follow these steps.
1. On Windows NT
®
Version 4.0:
Select the menu point "COM-Port" following using the menu "START" Æ "SETTINGS" Æ
"SYSTEM CONTROL" Æ "CONNECTIONS". Using the menu string "SETTINGS" Æ
"EXPANDED" switch the command "FIFO active" off. Now restart the PC.
2. For Windows
®
2000 and Windows
®
XP (classic category view):
Select "Expanded settings for COM1" using the menu "START" Æ "SETTINGS" Æ "SYSTEM
CONTROL" Æ "SYSTEM" Æ "HARDWARE" Æ "UNIT MANAGER" Æ "CONNECTIONS"
(COM and LPT)’ Æ "COMMUNICATION CONNECTION(COM1)" Æ "CONNECTION
SETTINGS" Æ "EXPANDED". Deactivate the "Use FIFO buffer". Now restart the PC.
FAILURE MODE
LO ≤ 3.6 mA
HI ≥ 21.0 mA
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