HP 3468A - Page 35

The 3468A may be connected anywhere in the interface loop. The loop consists
of up to 30 devices. When installing or removing the 3468A (or any other device)
ALWAYS turn off the calculator first. Then simply disconnect the loop in one place
and connect the 3468A at that point. Remember, the interface cables must form
a continuous loop. All HP-IL connectors are designed to ensure proper orientation
and indicate the direction of information transfer.
When the calculator is turned on it will automatically assign addresses to each
device depending on its position in the loop. The first device in the loop after the
calculator (in the direction of information flow) will have an address of “1”. The
second device will have an address of "2”, and so on around the loop. The
calculator has an address of “0”. The device must be “SELECTED” by its address
before any command or information can be sent to it.
For more specific information on HP-IL, refer to Appendix A in this manual and
also the -hp- Model 82160A HP-IL Module Owners Manual (-hp- part number
82160-90001).
Examples Format
The many examples in this chapter are designed to enhance your understanding of
programming using the HP-IL interface. The examples show the actual keystrokes
used in entering a command or program line from the -hp- Model 41C/41CV
calculator keyboard. Also shown is the calculator display for each line as it has
been entered. Enter the examples exactly as shown. If you make a mistake when
entering a program you can generally use the correction key [=]. the Back Step
key [BST], or the Single Step key [SST] to edit the program. For more complete
-hp- Model 41C/41CV operating and programming information refer to the
Owner’s Handbook and Programming Guide for the -hp- Model 41C/41CV.
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