Yokogawa EJX440A - Manual (Page 33)

<3. Operation>
3-23
IM 01C25T01-01E
NOTE
1. When the polling option is set as Never Poll
or Poll Using Tag, the online menus cannot
be called up and displayed. Be sure to select
a polling option such as Ask Before Polling.
2. When the same polling address is set for
two or more transmitters in multidrop mode,
communication with these transmitters is
disabled.
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1
1
F0337.ai
(1) The HART communicator
searches for a transmitter that
is set in multidrop mode when
it is turned on.
When the HART
communicator is connected to
the transmitter, the polling
address and the tag will be
displayed (display ).
(2) Select the desired transmitter.
After that, normal
communication to the selected
transmitter is possible.
However, the communication
speed will be slow (display ).
(3) To communicate with another
transmitter, turn off the power
once and then turn on it again,
or call up display and select
Online.
(4) Display will appear. Select
the desired transmitter.
HART Communicator
Online
1 EJX110A-1
2 EJX110A-2
3 EJX110A-3
HELP SET HOME OK
EJX:EJX110A-1:
Online
1 Device setup
2 Pres 0.0 mmH2O
3 AO 4.000 mA
4 LRV 0.0 mmH2O
5 URV 3500.0 mmH2O
DEL SET ABORT OK
2
2
HART Communicator
1 Offline
2 Online
3 Frequency Device
4 Utility
HELP DEL ABORT OK
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3
Example: Communication when set in multidrop mode
To release multidrop mode, follow the procedure
below.
1. Call up the
Poll addr display and set the
address to 0.
2. Call up the Polling display and set Ask Before
Polling.
3.5.11 External Switch Mode
Follow the procedure below to enable or inhibit zero
point adjustment by means of the zero-adjustment
screw on the transmitter.
This is set to
Enabled when the instrument is
shipped.
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(ENTER)
EJX:
Ext SW
Enabled
Disabled
Enabled
HELP SEND ESC ENTER
Select Disabled and press
ENTER (F4).
1. Device setup
4. Detailed setup
5. Device information
1. Field device info
9. Ext SW
Example: Set the mode to inhibit zero adjustment by
means of the external zero-adjustment screw.
EJX:
Field device info
5 Model 1
6 Model 2
7 Model 3
8 Write Protect No
9 Ext SW Disabled
HELP SEND HOME ENTER
Press SEND (F2) to send the data
to the transmitter, then check to
confirm that disappears.
(SEND)
SEND
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