YOKOGAWA ADMAG AXR - 8.8.2 Fixed Current Output; 8.8.3 Burst Mode; 8.8.4 Multidrop Mode

<8. OPERATION VIA HART CONFIGURATION TOOL (HART 5)>
8-5
IM 01E30D01-01EN
CAUTION
The output adjustment function can match the
4mA and 20mA output to the reference meter
such as a voltmeter. In the output adjustment, it
is necessary to use the calibrated voltmeter and
resistance.
8.8.2 Fixed Current Output
Thisfeaturecanbeusedtooutputaxedcurrent
for loop checks.
 In the case of using DD
Call up the test output parameter (Loop test) and
select the output signal.
• Proceduretocallupthedisplay
DD DeviceSetup→Diagnosis/Service
→Test→Looptest→
Display Item Contents
4mA Output a 4mA DC signal
20mA Output a 20mA DC signal
Other Set a desired output signal value
End Exit
 In the case of using DTM
Call up the test output parameter (Loop test) and
select either manual test or auto test, and set the
current value.
• Proceduretocallupthedisplay
DTM DiagandService→Test→
Looptest→
Display Item Contents
Manual Test Set the current value or % value at
Test output value, then click the
Start button.
Auto Test Set the interval and rate of change
of current output at Auto Test
Setting, then click the Start button.
8.8.3 Burst Mode
AXRcontinuouslysendsthedataviaHART
communication when the burst mode is set on (any
one of PV, % range/current, or process vars/crnt).
The data is sent intermittently as a digital signal at 3
times a second.
The burst mode is set as follows.
(1) Setting the data to be sent
• Proceduretocallupthedisplay
DD DeviceSetup→Detailedsetup
→HARToutput→Burstoption
DTM Conguration→HART→Burst
option
Select the type of data to be sent from the
following options:
- Instantaneousowrate(PV)
- Output in % and current output (% range/
current)
- Instantaneousowrate,totalizationvalue*
and current output (Process vars/crnt)
* “Totl,” “Reverse Totl” or “Dif Totl”
(2) Setting the burst mode
• Proceduretocallupthedisplay
DD DeviceSetup→Detailedsetup→
HARToutput→Burstmode
DTM Conguration→HART→Burst
mode
Then, select “On” at the menu to start the burst
mode.
To release from the burst mode, call up the
burst mode display, and set to “Off.”
The default setting is “Off.”
8.8.4 Multidrop Mode
Whensetinthemultidropmode,upto15eld
devices in a single communications line can be
connected. To activate multidrop communication,
theaddressoftheelddevicesmustbesettoa
number from 1 to 15. This deactivates the 4 to 20
mAanalogoutput,xingitto4mA.Burnoutisalso
disabled.
Note that the accuracy for multidrop mode is
different from that for other modes. Read Chapter
12.
The multidrop mode is set as follows.
(1) Setting the polling address
• Proceduretocallupthedisplay
DD (HART 5) DeviceSetup→Detailedsetup→
HARToutput→
DTM (HART 5) Conguration→HART→Polladdr
→Polladdr Enter the number from 1 to 15