
4
SET DEVICE ID
To give the HPB an assigned address of 01 up to 89, enter the following commands (Assumes the HPB is still null-
addressed):
Type:
*
00WE
<cr>
This enables the HPB to change a parameter in RAM
Type:
*
00ID=01
<cr> This sets the null addressed HPB to device ID=01.
Note:
The device ID is now used in the command input
Type:
*
01S=
<cr>
Response:
#
01S=00052036
(serial number test)
The # now replaces the ? in the header and indicates the HPB response is from an address assigned unit.
Where: *
indicates the start of a command
00
is the null address of the HPB
WE
is the command to enable a configuration parameter change
ID
is the command to change the device address
01
is the assigned HPB address for this example
S=
is the command to read the serial number
READ PRODUCTION DATE
To read the production date, enter the following command:
Type:
*
01P=
<cr>
Response:
#01P=09/26/00
READ CONTINUOUS PRESSURE
For continuous pressure readings at the factory set default rate of 5 per second, enter the following command:
Type:
*
01P2
<cr>
This enables a continuous stream of compensated pressure readings
to flow into the terminal program.
Type:
$*99IN
<cr>
This is the best way to stop the continuous pressure reading commands.
The $ character temporarily stops, or suspends, either the continuous
pressure or temperature readings. The *99IN command stops the continuous
readings.
CHANGE TO A NEW SAMPLE RATE
Enter the following command:
Type:
*
01WE
<cr>
This enables the HPB to change a parameter in RAM.
Type:
*
01I=M20
<cr> This sets the integration time to value 20, which corresponds to an output
sample every 2 seconds.
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 readings/sec) or time delay in 100 millisecond intervals (I=M60
for 6 seconds). The factory set integration time is 5 samples per second (I=M2). See Section 5.10, command
descriptions, for more detail.
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.