Vigilantplant TDLS8000, User Manual

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<7. HART Communication>
7-10
IM 11Y01D01-01EN
7.5 Functions Specific to HART
Communication
This section explains functions that can be performed only via HART communication. These
functions include those specified by HART communication and those of the TDLS8000 only for
HART communication.
7.5.1 Multidrop Mode
In the multidrop mode, multiple HART communication devices can be connected to a single
HART communication line. Set “Poll addr” to a value of 0 to 63 so that each device has a different
address.
Set “Loop current mode” to “Disabled”. In this setting, AO-1 output will be fixed to 4 mA, and
burnout output will be disabled. However, in the multidrop connection with devices that receive
analog outputs (including actuators), one unit in one loop can output analog signals. In this case,
set “Loop current mode” to “Enabled”.
Configuration menu: “Detailed setup>>System>>Communication>>HART output”
7.5.2 Squawk
This function identifies any unit of the TDLS8000 that is connected via HART communication.
“SQUAWK !!!” will appear on the SCU display of the TDLS8000 as shown below.
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How to use the Squawk function
(1) Go down the menu to Squawk: “Diagnosis/Service>>Loop check>>Squawk”.
(2) Choose an operation of Squawk among the following.
Option Operation
Off Disables Squawk.
On Enables Squawk.
Continues the display until “Off” is chosen or the TDLS8000 is turned off.
Squawk Once Enables Squawk for 10 seconds.
7.5.3 Aborting Calibration and Validation
Even if a setting tool is accidentally disconnected during calibration or validation via HART
communication, these tasks do not suspend but continue on the TDLS8000. In this case, stop
calibration and validation with the abort function, and then start these tasks afresh. Note that
calibration and validation commanded from the YH8000 cannot be aborted with this function.
The abort function is available for calibration and validation.
For calibration: “Diagnosis/Service>>Calibration>>Abort calibration”
For validation: ”Diagnosis/Service>>Validation>>Abort validation”
The following shows how to abort manual span calibration.
(1) During the span calibration, go down the menu to Abort calibration:
3rd Edition: Jun. 10, 2016-00