Precision Loop Calibrator
HART Device Communication
27
Communications Setup and Selection
For all Main screen operation modes, except mA
Measure with 24V or Volts Measure, the operation
mode is set to mA Measure when you enter the HART
Comm. Menu.
The operation mode remains the same as the main
screen when it is Measure with 24V. If Volts Measure
was selected from the Main menu, the menu defaults to
communicator mode only and the 250 Ω resistor selection
shows n/a.
The 250 Ω resistor selection cannot be edited in
communicator mode.
The mode and resistor will change from the last
selections made in the HART Comm. Menu when you
exit the menu.
The mode and 250 Ω resistor settings must correspond to
how the test leads are connected before you connect.
See Figure 23.
gzx32.eps
Figure 23. HART Comm. Menu Screen
Select a function from the menu and push the selection
knob to do the function. Push to disconnect from
HART mode and go to the function home screen without
action.
An error is shown and no action is taken if the measured
input is out of range, OL or -OL.
250Ω Resistor, and HART CONNECT functions are
described in subsequent sections.
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