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Chapter 11
149
Using HP Instrument BASIC
Pass Control Involved with an External Controller
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BASIC
Pass Control Involved with an External Controller
Here follows the description of how to exchange the control priority (pass control) between
Instrument BASIC and an external controller.
Pass control
To deliver active control from an external controller to HP Instrument BASIC, execute
pass control on the external controller side. For example, with the GPIB address set to 17 in
the 4294A, the following in HP BASIC serves the purpose.
PASS CONTROL 717
When the 4294A has the control priority, the 4294A can specify another device on the
GPIB bus to freely exchange (talk/listen) data. Similarly to the system controller, the
4294A can transmit data either to a printer or to a plotter (talk) and receive (listen)
responses either from the printer or from the plotter.
NOTE
The features to assert the interface clear line (IFC) and the remote enable line (REN)
appertain to the system controller. Even though HP Instrument BASIC is turned to an
active controller, it cannot use these features.
ABORT 7 Asserting Interface Clear Line (IFC)
REMOTE 7 Asserting Remote Enable Line (REN)
To return the control priority to the 4294A, execute the following on the Instrument BASIC
side.
PASS CONTROL 721
Also, resetting the GPIB bus as given below causes the control priority to return to the
system controller.
ABORT 7
Содержание 4294A
Страница 4: ...4 ...
Страница 18: ...18 Contents ...
Страница 24: ...24 Chapter1 To make effective use of this manual Other manuals attached to this unit ...
Страница 94: ...94 Chapter6 Reading Writing Measurement Data Reading Writing Data ...
Страница 110: ...110 Chapter7 Processing Measurement Results Analyzing Measurement Results ...
Страница 130: ...130 Chapter9 Communication with External Equipment Using the I O Ports Sample Program to Use the I O Port ...
Страница 136: ...136 Chapter10 Handling Errors Sample program for error handling ...
Страница 246: ...246 13 Application Sample Programs File Transfer Function ...
Страница 254: ...254 Chapter15 Setting the Display LCD Sample program for setting the LCD screen ...
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