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(2) Activating the multidrop mode
About the procedure to call up the Polling
display, read the User's Manual of each
configuration tool.
NOTE
When the same polling address is assigned for
two or more field devices in multidrop mode,
communication with these field devices is
disabled.
(3) Communication when set in the multidrop mode
1. The HART configuration tool searches a field
device that is set in the multidrop mode when
the HART configuration tool is turned on.
When the HART configuration tool is
connected to the field device, the polling
address and the tag will be displayed.
2. Select the field device, and then
communication with it is possible. The
communication speed is slow in this case.
3. To communicate with another field device,
turn off the power once and then turn it back
on, or call up "Online" menu, and select
"Online."
The polling address and the tag will appear.
Select the field device.
(4) Release of the multidrop mode
Call up the "Poll addr" display, and set the
address to "0."
8.8.5 Switching HART Protocol Revision
When the output signal code is "-J", HART protocol
revision of the device can be selectable from 5 or 7.
The HART protocol revision is set and shipped as
specified in the order.
To change the HART protocol revision after
shipment, follow the procedure shown below.
IMPORTANT
When changing the protocol revision, confirm the
items below.
• Protocol revision supported by HART
configuration tool must be the same or
higher than new protocol revision of the
device
• Confirm that the DD or DTM which is suitable
to new protocol revision of the device is
installed in the configuration tool. (Read
Section 8.2 or Section 9.2)
<8. OPERATION VIA HART CONFIGURATION TOOL (HART 5)>
1) Call up the parameter for protocol revision
change
• Procedure to call up the Chg universal rev
display.
DD
Device Setup → Detailed setup →
Device information → Field device
information → Revision #'s → Chg
universal rev
DTM
Configuration → HART → Chg
universal rev
2) Activate the "Chg universal rev" method
IMPORTANT
The message is displayed to separate the device
from the automatic control loop.
Confirm that the device is separated.
3) Input the new revision number
An input column for new protocol revision number is
displayed.
Input the new HART protocol revision number of "5"
for HART 5 or "7" for HART 7.
4) Applying the new protocol revision
a. C lose the configuration tool
After completion of Chg universal rev
method, close the HART configuration tool.
NOTE
When using a FieldMate, close the main display
of FieldMate.
b. Restart the device
Turn off the power to the device, and turn it
on.
IMPORTANT
New protocol revision is applied only after having
performed restart of the transmitter.
5) Confirming the new protocol revision
a. Restart the HART configuration tool
NOTE
When execute the other parameter confirmation
or setting change, execute after restart the
configuration tool.
8-6
IM 01E30D01-01EN
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