Yokogawa ADMAG AXR Uživatelský manuál stáhnout pdf (Strana 107)

<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.

 I

n the case of using DD

Call up the test output parameter (Loop test) and

select the output signal.

• P

rocedure 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.

• P

rocedure 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 C

on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 C

on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. Refer to Chapter

11: Outline.

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) C

onguration→HART→Polladdr

→Polladdr Enter the number from 1 to 15

1 2 ... 102 103 104 105 106 107 108 109 110 111 112 ... 193 194

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