Honeywell PPT User Manual page 12

READ CONTINUOUS PRESSURE
For continuous pressure readings at the factory set default rate of 5 per second, enter the follow-
ing command:
Type: *01P2 <cr>
Type: $*99IN <cr>
CHANGE TO A NEW SAMPLE RATE
Enter the following command:
Type: *01WE <cr>
Type: *01I=M20<cr> This sets the integration time to value 20, which corresponds to an
The sample rate will change to one every 2 seconds. I= is an abbreviation for Integration time
which determines how long to accumulate pressure samples between readings. Each integration
period gathers the data for one pressure reading output (see Section 4.2 What is integration?).
The range of integration times can be set by specifying readings per second (I=R45 for 45 read-
ings/sec) or time delay in 100 millisecond intervals (I=M60 for 6 seconds). The factory set inte-
gration time is 5 samples per second (I=M2).
The output data rate can also be altered by use of the idle count (IC) command or by changing
the reading rate (RR) command in conjunction with the operating mode (OP) command. See
Section 4 for description of these commands.
REPEAT THE READ CONTINUOUS PRESSURE STEP ABOVE
Notice the slower output rate of one sample every 2 seconds.
TRY OTHER COMMANDS
Experiment with other commands to become familiar with the command structures. A short
overview of each command with input and response examples is shown in Section 3 Commands –
Quick Reference. See Section 5—Commands for complete command descriptions. Until an
SP=ALL command is executed, no changes will be stored in the EEPROM. Re-apply the power
or send an IN=RESET command to revert to EEPROM default settings.
This enables a continuous stream of compensated pressure readings
to flow into the terminal program.
This is the best way to stop the continuous pressure reading com-
mands. The '$' character temporarily stops, or suspends, either the
continuous pressure or temperature readings. The *99IN command
stops the continuous pressure readings.
This enables the PPT RAM to accept a changed parameter.
output sample every 2 seconds.
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