The Output Window Instruction, Ow - HP 7470A Interfacing And Programming Manual

The Output Window Instruction, OW
DESCRIPTHJN The output window instruction, OW, provides the
means to obtain the X- and Y-coordinates of the lower-left and upper­
right corners of the area in which plotting can currently occur.
The instruction can be used to determine the area in which
any plotting will occur. When executed immediately after power on or
the execution of a DF or IN command, the command can be used to
determine under program control whether the paper switch is set to us
or A4.
SYNTAX OW (terminator)
EXPLANA-"UNNo parameters are used. Output is in plotter units.
After an OW command is received, the plotter will output the coordi­
nates of opposite corners of the plotting area in plotter units as four
integers in ASCII in the following form:
Xlower left, Ylowerleft, Xupper right, Yupperright [TERM]
where [TERM] is the output terminator for your system. See Terms You
Should Understand in Chapter 7.
The range of the integers is determined by the setting of the paper
switch as shown below:
US A4
0<X< 10300 O<X<10900
O<Y<7650 0<Y<7650
If Xlowerleft is greater than Xupper right or Y1owe;left is greater than
Yupper r ight, no window exists in which plotting can occur.
2-10 ESTABLISHING BOUNDARIES AND UNITS