Agilent Technologies VEE Pro Manuel de service télécharger pdf (Page 88)

66 Agilent VEE - Practical Graphical Programming

3 Instrument Controls

Sending an expression list to an active instrument

1 Select Menu Bar => I/O => Instrument Manager…

2 Select funcgen(@(NOT LIVE)); click on "Direct I/O"; place it to the right

of the Work Area.

3 Double- click on its transaction bar to obtain its Dialog Box.

4 Select WRITE TEXT, and type "FR",A,"HZ" with EOL ON; click OK.

5 Select Menu Bar => Flow => Repeat => For Range; place it to the left of

the Function Generator. (This will simulate the frequency value.)

6 Connect the For Range data output pin to the funcgen(@ (NOT LIVE))

data input pin.

7 Edit the fields in the For Range object as follows. See Figure 3- 7.

From: 10

Thru: 2.1M

Step: 50k

Figure 3-8 An Expression List I/O Command Transaction

NOTE

• FR represents frequency; A represents the frequency value at input terminal A,

and HZ represents the frequency unit: "Hertz".

• The terminal A was added automatically. This transaction command will write

the string "FR", followed by whatever value is sent into input terminal A,

followed by the string "HZ".

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Agilent Technologies VEE Pro Manuel de service Page 88