Meriam 4150X ATEX I.S. Certified HART Communicator - Manual (Page 21)

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When no device connection is detected the 4150 / 4150X enters the Main Navigation Screen and the
message Device 0: Not Found is displayed. Upon selecting the “1 Online Setup” option, the unit checks
again for Device address 0 and if not found displays the Multidrop / Retry 0 screen. This screen allows
selection of either of three options: launch Multidrop poll by selecting the Multi soft key, retry Device 0
communication after re-checking physical connections to the device by the selecting Retry soft key, or exit
to Offline mode by selecting the Exit soft key.
Multidrop Poll (addresses 1 – 15)
To initiate a Multidrop Poll, select the Online Setup option from the Main screen when the Device 0: Not
Found message is displayed. Then select Multi soft key from the Multidrop / Retry 0 screen. This
function polls for all non-zero addresses (1 – 15). Located addresses are listed on the display as the
remaining addresses are checked. When polling is complete, or upon pressing Stop after the address of
interest is found, use the soft key controls to select the address of interest. The initial HART menu for the
selected device will be displayed.
Digital Poll (addresses 0 – 15) for One Power Cycle Only
Digital Polling is a special feature accessible through the Unit’s Main navigation screen and the Cfg soft
key. Press the Cfg soft key and then select the “2 Applications” menu option. Select the “1 Digital Poll”
menu option to launch a polling operation that starts with address 0 and ends with address 15. All
addresses on the loop will be displayed on the Unit’s screen. The address of interest can be selected from
the list to launch HART communication with that device. This Digital Poll is for one power cycle only
and can only be launched from this location in the handheld’s menu structure. Turning the power off will
return the unit to the unit’s default HART poll setting.
Auto and Digital Poll (addresses 0 – 15) Default Setting Options
Auto Poll is the factory default setting. To set Digital Polling or re-set Auto Polling as the unit’s default poll
setting, press the Cfg soft key and then select the “5 Other” menu option. Select “
5 Polling Type.” Two
user selectable options are available.
Auto polling directs the 4150 / 4150X to always poll for HART device address 0 (zero) first. When
found, communications begin automatically. If address 0 is not found, the unit automatically asks
for direction; select “Multi” from soft key to start a multi-drop poll from address 1 – 15 or select
the “Retry” soft key to try to find address 0 again.
Digital polling directs the 4150 / 4150X to always poll for HART devices addresses 0 – 15. This
polling method is best for 4 – 20 mA loops where a device with address 0 is present and another
device with a non-zero address is on the same loop. Selecting Digital Polling here sets it as the
Unit’s default poll setting.
Main Navigation Screen
No device or Non-zero address found
Communicator #
1 Online Setup
2 Offline Menu
Device 0: Not Found
Up Down Select Cfg
Communicator #
Multidrop Polling…
1
3
4
Scanning Address # 7
Stop
Abort
Multidrop Polling Screen
Multidrop & Burst Mode Support
Multidrop / Retry 0 Screen
No device or Non-zero address found
Communicator #
No device found:
Press Multi to begin
multidrop polling.
Retry to poll addr 0,
or Exit to go Offline.
Multi Retry Exit