Yokogawa digitalYEWFLO (DY) - Manual (Page 84)

<9. OPERATION VIA HART CONFIGURATION TOOL (HART 7)>
9-12
IM 01F06A00-01EN
(3) Squawk (Effective only when setting to
HART 7)
This feature can be used to identify the
communicating device by remotely causing LCD to
display the particular pattern as shown in the Figure
9.4
“SQUAWK” continues for approximately 10
seconds, then is released automatically.
• Procedure to call up the Squawk display
[Root Menu] → Diag/Service → Squawk(Method)
F0908.ai
Figure 9.4 Display for Squawk
9.10.6 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
specifi ed in the order.
To change the HART protocol revision after
shipment, follow the procedure shown below.
IMPORTANT
When change the protocol revision, confi rm the
items below.
• Protocol revision supported by HART
confi guration tool must be the same or
higher than new protocol revision of the
device. (Refer to Section 9.1 “HART Protocol
Revision”)
• Confi rm that the DD or DTM which is suitable
to new protocol revision of the device is
installed in the confi guration tool. (Refer to
Section 9.2 “HART Confi guration Tool and
Matching of Device Revision” and Section
9.3 “Setting Parameters using DTM”)
(1) Call up the parameter for protocol revision
change
• Procedure to call up the Chng universal rev
display.
DD (HART 5/7)
DTM (HART 7)
[Root Menu] → Detailed setup →
Device information → Revision numbers →
Chng universal rev
DTM (HART 5) [Root Menu] → Confi guration →
HART → Chng universal rev
(2) Activate the “Chng universal rev” method
IMPORTANT
The message is displayed to separate the device
from the automatic control loop.
Confi rm 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.
It checks that the revision number which it is going
to change into the Next universal rev column is
displayed.
[Root Menu]
→ Detailed setup → Device
information → Revision numbers → Next universal
rev
(4) Applying the new protocol revision
a. Close the confi guration tool
After completion of Chng universal rev
method, close the HART confi guration 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 device.