The Plotter On Instruction, Esc; The Plotter Off Instruction, Esc . ) Or Esc . Z - HP 7470A Interfacing And Programming Manual

Default Values; Any parameter may be omitted or, if the parame­
Omitting Parameters ter is required, it can be set to its default value
by omitting the parameter and entering only
the semicolon as a delimiter. All parameters
may be omitted and therefore set to default
values by entering only the colon terminator
after the instruction.
ESC Denotes the single ASCII character, Escape,
which in most computers is accessed by striking
a single key on the keyboard.
NOTE: There is no delimiter (semicolon) be­
tween the three—character command sequence,
e.g., . O,andthe firstparameter. I
The Plotter On Instruction, ESC . (
or ESC . Y
DESCRIPHDN The plotter on instruction, ESC . ( or ESC . Y, places a
plotter which is powered on into the on-line, programmed—onmode so
that it will accept incoming data and interpret it as plotter instructions.
M This instruction is used when the rear—panel switch labeled Y/D
is set to Yto ready the plotter to accept other instructions. It is sent at
the beginning of any plotting program or when the user wishes to
resume plotting after the plotter has been turned off by an ESC . ) or
ESC . Z command or a Break.
SYNTAX _ (
OX'
. Y
EXPLANATIONThis instruction is ignored when the rear-panel switch
labeled Y/Dis set to D since, in that case, turning on the power places
the plotter in the programmed—onstate.
Beginning with the next character, the plotter will accept incoming
data and interpret it as plotter instructions. If the plotter is already in
the programmed-on state, it will ignore this instruction.
The Plotter Off Instruction, ESC . )
or ESC . Z
The plotter off instruction, ESC . ) or ESC . Z, takes the
plotter out of on-line, programmed-on state so that it neither accepts
nor interprets incoming data until another plotter on instruction is
received.
10-24 RS-232-C/CCITT V.24INTERFACING