709/709H
Users Manual
22
HART Write Enable
HART Write Enable is the last function in the Calibrator
Setup Menu. See Figure 18.
gzx30.eps
Figure 18. Hart Write Enable Screen
This function is available only on the 709H. It protects the
Write LRV, Write URV, Device Diagnostic, Trim 4mA,
Trim 20mA, Set Fixed Output, and PV Zero functions.
The default setting is ON, but it may be turned off to
protect the Product against unauthorized use.
Before the setting is changed, a password is required.
The password is set to 617 at the factory. The range of
values that can be set is 000 to 999. See Figure 19.
The write-enable selection is saved only when the correct
password is given. Otherwise an error message is shown.
Push the selection knob to move the decade cursor. Turn
the selection knob to adjust the value in steps indicated
by the decade selected. Push and hold the selection knob
to save the write enable setting. Push to restore the
previous HART-enable selection and go to the Main
screen.
gzx31.eps
Figure 19. Password Screen
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