HP 7470A Interfacing And Programming Manual page 111

The plotter will always output the following:
40 , 40 [TERM]
These factors indicate that there are approximately 40 plotter units per
millimetre in the X—axisand in the Y—axis(0.025 mm/ plotter unit).
[TERM]is the output terminator for the interface installed.
The Output Identification Instruction, OI
DESCRIPTION The output identification instruction, OI, is used to out­
put a plotter identifier.
M This instruction is especiallyusefulin a remote operating en­
vironment to determine which model plotter is on—line.
SYNTAX OI (terminator)
EXPLANATIONNo parameters are used. The instruction will execute
even if no terminator is received.
The plotter will always output the following character string:
7470A [TERM]
[TERM]is the output terminator for the interface installed.
The Output Options Instruction, OO
DESCRIPTION The output options instruction, O0, is used to output
eight option parameters.
M This instruction is especiallyuseful in a remote operating en­
vironment to determine which options are available in the plotter
which is on—line.
SYNTAX 00 (terminator)
EXPLANATIONNo parameters are used. The instruction will execute
even if no terminator is received.
The plotter will always output the appropriate combination of eight
integers in ASCII, separated by commas. The options included in the
plotter are indicated by a 1 as defined below.
0,1,0,0,1,0,0,0[TERM]
Indicates arcs and circle instructions are included (available
only with RS-232-C plotters that have the Serial Prefix number
2308A or higher).
Indicates pen select capability is included (available on all plotters).
[TERM]is the output terminator for the interface installed.
OBTAINING INFORMATION FROM THE PLOTTER 7-7