YOKOGAWA ADMAG AXR - Multidrop Mode

<9. OPERATION VIA HART CONFIGURATION TOOL (HART 7)>
9-10
IM 01E30D01-01EN
b) AcknowledgeEventNotication
Execute AcknowledgeEventNotication
method.
1)Enter“theeventnumberwhichisconrmed
in a) 5” into “Enter Event Number”.
2) OK.
3) Set “Select Transaction” to “Trans 1 : Send
Acknowledge”.
4) OK.
5)Conrm“EvenStatus”is0x00.
(3-3) EventNoticationRecord(DTMonly)
• Proceduretocallupthedisplay
DTM [Root Menu]→Detailedsetup→
Outputcondition→HARToutput
→Burstcondition→Event
Notication→Eventknowledge
→
→Acknowledge
EventNotication
Acquisition of the event number
and approval.
a) Get Event Number
Conrmthelatesteventnumber.
Execute AcknowledgeEventNotication
method.
1) Set “Enter Event Number” to “0”.
2) OK.
3) Set “Select Transaction” to “Trans 0: Read
EventNotication”.
4) OK.
5)Conrm“EventNumber”.
b) ConrmationrecordofEventNotication
Conrmfoureventscheckedina).
Execute AcknowledgeEventNotication
method.
1)Enter“theeventnumberwhichisconrmed
in a) 5” into “Enter Event Number”.
2) OK.
3) Set “Select Transaction” to “Trans 0:Read
EventNotication”.
4) OK.
5) Knowledge menu displays events record.
Ex.)Whentheconrmedeventnumberis123.
Event Number Explanation
123 The latest event
122 An event before the once.
121 An event before the twice.
120 An event before three times.
9.8.4 Multidrop Mode
“Multidropping” transmitters refer to the connection
of several transmitters to a single communication
transmission line. Up to 63 transmitters can be
connected when set in the multidrop mode. To
activate multidrop communication, the transmitter
address must be changed to a number from 1 to
63. This change deactivates the 4 to 20 mA analog
output, sending it to 4 mA. The alarm current is also
disabled.
Setting of Multidrop Mode
(1) Polling address
• Proceduretocallupthedisplay
DD
DTM
[Root Menu]→Detailedsetup
→Outputcondition→HART
output→
→Polladdr Enter the number from 1 to 63
(2) Enabling the Multidrop Mode
About the procedure to call up the Polling display,
ReadtheUser’sManualofeachcongurationtool.
When Loop current mode is set to “Enabled”, an
analog signal output is available for one device in a
loop.
• Proceduretocallupthedisplay
DD
DTM
[Root Menu]→Detailedsetup→
Outputcondition→Analogoutput→
Loopcurrentmode→
Enabled Loop current mode is enabled.
Disabled Loop current mode is disabled.
NOTE
When the same polling address is set for
two or more transmitters in multidrop mode,
communication with these devices is disabled.
(3) Communication when set in multidrop
mode.
• TheHARTcongurationtoolsearchesfora
device that is set in multidrop mode when it is
turnedon.WhentheHARTcongurationtool
is connected to the device, the polling address
and the tag will be displayed.
• Selectthedesireddevice.Afterthat,normal
communication to the selected device is
possible. However, the communication speed
will be slow.