HP 7470A Interfacing And Programming Manual
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Summary of Output Response Types
The following table shows the number and type of items in the re
sponse to each HP-GL output command. The table includes output com
mands explained in Chapters 2 and 6 as well as in this chapter. This
table will be helpful when programming in languages such as FOR
TRAN which require you to specify the type of and number of digits in
a variable.
Number of
Parameters
Instruction Returned* Type and Range
OA 3 integers, all < 5 digits
OC** 3 decimals, all S 11 digits
OD 3 integers, all S 5 digits
OE 1 integer, 1 digit
OF 2 integers, 2 digits each
OI 1 5—characterstring
OO 8 integers, 1 digit each
OP 4 integers, 1st and 3rd < 5 digits;
2nd and 4th S 4 digits
OS 1 integer, < 3 digits
OW 4 integers, 1st and 3rd < 5 digits;
2nd and 4th S 4 digits
*In addition to these parameters, the output terminator [TERM]is always sent
at the end of output, and commas are sent to separate parameters.
**If you have an HP—IBor RS-232—Cplotter that has a serial prefix number
lower than 2308A,OC parameters are output as integers. For more informa
tion, refer to the explanation of the OCinstruction in this chapter.
OBTAINING INFORMATION FROM THE PLOTTER 7-9