General Parameters - MTS Systems Level Plus Interface Manual

2. Connect level transmitter to HART
24 Vdc power to the level transmitter, and connect the HART
USB converter to the PC. Example setup shown below.
Note:
Power must be on Loop 1 for HART
does not have to be applied on Loop 2 for HART
be applied to Loop 2 to check current output.
Note:
®
HART requires a load resistor to work correctly. Add a 250 Ohm
resistor for proper communication. Some PLC cards will have built
in load resistors.
Fig. 2 Example setup
3. Open setup software. Select HART
4. Select COM Port. Software will show active components. If you do
not know which COM port to select, right click Computer on the
desktop and select Properties. On the left hand side menu you can
click Device Manager. In Device Manager click on the + sign next to
Ports (COM & LPT) to view list. An error message will appear if
HART ® does not successfully connect.

9.1.2 General Parameters

The General Parameters selection in the Setup Software shows the basic
setup for the level transmitter.
® to USB converter, connect
® to
®
communication to work. Power
®
to work. Power must
® Protocol.
Fig. 3 General Parameters window
Manufacturer ID Code
The Manufacturer ID Code is a unique numerical code that is supplied to
each HART ® certified manufacturer. This parameter cannot be changed.
Device Code
The Device Code is a unique numerical code assigned to each HART
certified product. This parameter cannot be changed.
Device Serial Number
The Device Serial Number is the unique identifier for the unit from MTS
and should not be changed. The serial number is used for tracking and
determining spare parts.
Gradient
The gradient is a calibration factor that is unique for each transmitter.
Typical values are between 8.9 and 9.2 µs/in.
Display Units
The Display Units has a drop down menu where the user can select Nor-
mal, mA, or percent. Normal changes the display to show the enginee-
ring units selected. mA changes the display to show the output in mA.
Percent changes the display to show the output in percentage full.
Float 2
Float 2 allows the user to turn on or off the option of looking for a second
float. Do not Enable this option if a second float is not present on the
level transmitter or else the level transmitter will enter alarm. Float 2
does not enable a second loop unless the level transmitter was ordered
with a second loop. Both float positions can be viewed via HART
one loop transmitter.
Temperature
Temperature allows the user to turn on or off the option of measuring
temperature. Temperature will not work if a temperature element was
not ordered with the level transmitter from the factory. The Temperature
will show on the display but will not change from 32° F (0° C).
Damping
Damping slows the rate of change for the output signal. It does not
change the output but dampens how quickly the output follow the
change in the float position. The standard rate of change would have the
Damping set to 0.400 seconds.
Others
Length, Head Adder, and Display are not used by the LP Series. These
are shown for backwards compatibility and should not be changed.
9
®
HART Interface Manual
LP Series
®
® over a