Technical Specifications

ValVue Digital Communications Software Ver. 2.80
528
GE Oil & Gas
Date This field contains a user entered date value. The value is stored
inside the device. It can be used however you wish and is often used
to track the date of the last maintenance.
Assembly Number This field contains a user-entered number. You can assign the
assembly a unique number for their internal use.
Other Fields
Level The value of the level of liquid measurement in its engineering units.
The units can be selected by the user in the calibration-parameters
tab. The signal is converted to engineering units based on the
parameters entered on the calibration tab.
Signal (mA) The value of the output signal from the HDLT expressed in
milli-ampere.
Send CMD Sends the command that is selected in the drop down box to the
HDLT. The response from the HDLT is printed in the response box.
Write Assembly Number Selecting this command brings up a dialog which lets you enter an
assembly number which are written to the HDLT.
Write Message Selecting this command brings up a dialog which lets the user enter
a message of up to 32 characters which will be written to the HDLT.
Write Tag and Descriptor Selecting this command brings up a dialog which to enter a tag
name, descriptor, date. This data is written to the HDLT.
Device ID Each HDLT manufactured by Masoneilan is assigned a unique identi-
fication number. HART uses the manufacturer’s ID, Manufacturer’s
Device Type, and the Device ID to uniquely identify a HART device. No
two devices will have the same values for these three parameters.
Manufacturer's ID Masoneilan’s manufacturers ID for HART devices is 101. This number
is built into the device.
Device Type The HDLT device code is 100. This number is built into the device.
Hardware Revision This value indicates which revision of the hardware is used inside the
HDLT. LevelVue and other software that must communicate with the
HDLT uses the software revision number to know how to correctly
communicate with the device.
Status
The HDLT tracks internal errors and fault conditions. When there is information on fault codes
available in the HDLT, this box will contain Additional Status Available. To retrieve fault codes:
1. Select Read Status from the drop down list.
2. Click Send CMD. The results appear in the lower left box.
The status block also contains other status codes returned by HART. These include
Configuration Changed, Device malfunction, and Variable out of limits.