REMOTE/AUTOMATED CONTROL 6-17
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6.4.4.9 P - Program Value Read/Write Command
The P command selects or queries the active program, or sets or queries
the active operating values for a program depending on the parameters
included with the command. The operating values are the gas
fl
ows for the
MFC’s, and the currents and voltages for the power supplies. The P com-
mand can be used to set or query the values for individual parameters or
for a string of parameters depending on the format of the command.
The general form of the program read/write command is:
Command: P<program#>:<parameter> (value)
The <parameter> and (value)
fi
elds are optional. The command
can be turned into a query by substituting ? for the <program#>,
<parameter>, and (value)
fi
elds. The interpretation of the query is
dependent on where the ? appears as outlined below.
●
Set or query the active program number
P<program#><cr><lf> - Set active program to <program#>
P<?><cr><lf> - Get active program number.
Acceptable program numbers would be 1 to 4.
Any parameters following the ? character for this command will be
ignored.
Any parameters following <program#> without the <:> as a delimit-
ing character before the <parameter>
fi
eld will be ignored.
Example: P4<cr><lf> - Set active program number to 4
Example: P?<cr><lf> - Get active program number
●
Set or query the values for individual program parameters.
P<program#>:<parameter> (value) – Set speci
fi
c <program#> <pa-
rameter> to (value)
P<program#>:<parameter> (?) – Get speci
fi
c <program#> <param-
eter> (value)
