Fluke Fluke-709H Calibrator, 4234361 Data Sheet
Product codes
4234361
Precision Loop Calibrator
HART Device Communication
29
HART Connect
The HART Connect function locates the HART device in
the loop. Before an operation with a HART device, the
device must be located on the loop. This is done by
polling all of the possible device addresses and selecting
a device from those addresses that respond to the
search.
the loop. Before an operation with a HART device, the
device must be located on the loop. This is done by
polling all of the possible device addresses and selecting
a device from those addresses that respond to the
search.
If a HART protocol revision 5 or earlier device is found on
the loop, polling stops at poll address 15. If not found, the
Product continues to poll address 63. Polling stops after
10 devices are found on the loop.
the loop, polling stops at poll address 15. If not found, the
Product continues to poll address 63. Polling stops after
10 devices are found on the loop.
If multiple devices are found on the loop, a tag list is
shown. From the list, select the correct device. If only one
device is found on the loop, it becomes the selected
device by default.
shown. From the list, select the correct device. If only one
device is found on the loop, it becomes the selected
device by default.
When a selected device is found, all relevant data is read
from the device and the operations described in the
“Function Select Menu” and “Device Setup and Data”
sections of this manual become available.
from the device and the operations described in the
“Function Select Menu” and “Device Setup and Data”
sections of this manual become available.
Polling Loop
The Polling Loop function searches the loop for HART
devices. This function starts immediately. The screen
changes to show the string of dots that is extended once
per second to as the operation progresses. See
Figure 26.
devices. This function starts immediately. The screen
changes to show the string of dots that is extended once
per second to as the operation progresses. See
Figure 26.
gzx35.eps
Figure 26. Polling Screen
The number of devices found on the loop during polling is
shown.
shown.
The selection knob can be pushed to stop polling early if
it is known that all of the devices on the loop have been
found. Push to stop polling, disconnect from HART
mode, and go to the function home screen.
it is known that all of the devices on the loop have been
found. Push to stop polling, disconnect from HART
mode, and go to the function home screen.
An error is shown if no device is found.
If multiple devices are found, a list of tags is shown. Use
the list of tags to select the necessary device.
the list of tags to select the necessary device.
If only one device is found, the tag selection step is
skipped.
skipped.