Bay Technical Associates V79 PDI-1 - Manual (Page 15)

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2. Once the PDI is selected, it will go into Command Mode and allow you to
send data commands. The PDI data commands begin with two capital
letters designating the specific command and are terminated with a
Carriage Return. Most data commands also require a number between
the command letters and Carriage Return. This number is typically the
desired channel(s) for the data command. If you have a requirement to
send the data command to multiple channels simultaneously, you may use
one of the following formats as shown for the SA (sample) command:
SA1,2,3,4,5,6,7,8<cr> Take a single sample for Ports 1-8
SA1-8<cr> Take a single sample for Ports 1-8
SA/0<cr> Take a single sample for Ports 1-8
SA1,2,4-8<cr> Take a single sample for Ports 1, 3, 4, 5, 6, 7,
and 8
3. After you have sent the desired data commands to the PDI module, you
may disconnect from the PDI by sending
$BT<cr> . You may disconnect
from the PDI and select a different module or the base unit by sending
$BTX<cr> , where X is the desired module number or 0 for the base unit.
IMPORTANT: If the PDI is operating in self reporting mode (i.e.,
Immediate or Schedule Reporting Method) and a host device issues a data
command, the host device must disconnect by sending the Port Select
Code and Carriage Return or Line Feed before the PDI will resume
sending event samples to the designated host module.
Section 4.3.1 through Section 4.3.10 provide detailed information on the
functionality of each data command supported by the PDI. Appendix A provides
these same commands in a condensed version for quick reference.