What's the usage of Digital Output.vi (kei224v6.llb)

 I would be gratefull if you could inform me for the usage of Digital Output.vi in kei224v6.llb.
I'm using Keithley 224 Programmable Curent Source.
Thanks

Hi thanserwood,
the Model 2243 is an optional IEEE-488 interface for the Model 224 Programmable
Current Source. This interface adds extra versatility to the Model 224 by allowing the transmission of data and commands
over IEEE-488 bus. The interface provides all the logic necessary to interface the Model 224 to the bus using standard
IEEE-488-1978 protocol. Additionally, the Model 2243 incorporates a separate digital I/O port that may be used to
interface the Model 224 to other digital instrumentation.
The digital I/O port consists of four input and four output lines as
well as IEEE-488 common and +5VDC. The outputs will drive one TTL load.
The instrument can be programmed to generate an SRQ upon any change in
the four bit input data.
In the manual you will find further information.
Regards
Indiana

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