Copyright 2013 Baker Hughes Company.
96 | DPI
620G Instruction Manual–English
Chapter
9.
HART® Operations
•
Poll Address - when each transmitter has a unique address.
•
Short tag - if the transmitter supports 8-character tags.
•
Long tag - if the transmitter supports 32-character tags.
Transmitters with a non-zero poll address are in multi-drop mode and default to a fixed loop
current of 4
mA.
By default, the DPI
620 Genii polls address 0 (zero) only. Change the Poll Address by selecting
the appropriate search radio button or entering the tag name in the search field.
9.9 HART® Device Connection Failure
9.10 HART® Configurations
9.10.1 HART® – Uploading the Configuration
From the Commands menu, the configuration may be uploaded to connected device by pressing
the Upload button.
9.10.2 HART® – Working with Saved Configurations
Selecting a Saved Configuration from the main offline menu enables the user to perform the
following operations:
•
Open HART® Config - This enables a previously saved HART® configuration file to be
edited.
•
Upload Config to Device -This enables a previously saved HART® configuration file to be
uploaded to a connected device.
Fault
Possible Cause
Action
Failed to find
device.
Power Supply
Check device is turned on.
Check applicable fuses.
Check the supply voltage is within limits.
Device under Test
Check device is HART® compatible.
Connect multiple devices one at a time.
Circuit
Check circuit connections.
Check circuit Continuity.
Check correct polarity of supply to the transmitter.
Check the HART® resistor is in the correct place in the loop.
Check the HART® resistor has the correct value.
Check the loop current is in the range 3.5
mA to 24
mA.
DPI
620 Genii
Check the DPI
620 Genii is connected to the correct points in
the loop.
No external HART® resistor present, check the internal
resistor setting.
External HART® resistor present, check the DPI
620 Genii
resistor setting is OFF.
Check that the CH2 function is set to “None” if the DPI
620
Genii is used as a secondary master (in parallel with an
external supply.
Preferences
Select the “search 0
-
63” option to scan all possible Poll
Addresses to get the Poll Address and Tag details of the
connected device.
