Chapter 7 - Serial Interface Commands - Garnet SeeLeveL Special 809-DM User Manual

CHAPTER 7 - SERIAL INTERFACE COMMANDS

T
he following section describes the defined 809-DM serial
commands. The serial data requests are ASCII data strings.
Throughout this section <CR> represents a single carriage return
character (hexadecimal 0x0D). In this section
serial data being received by the 809-DM.
serial data being transmitted from the 809-DM. Either uppercase
or lowercase characters can be used, the response will be in the
case that is used to make the request.
To communicate with the gauge for testing purposes, the 809DM
Serial Port Tester can be used. It has all of the serial commands
preprogrammed for easy reference.
button (or SHIFT and the button at the same time) followed by
ENTER to query the current setting of any of the parameters. Press
the button followed by the number sequence as indicated on the
Tester screen, followed by ENTER to set any of the parameters. The
Tester will interpret the gauge response with English phrases to
make it easy to know what the settings are.
PTO change
During normal operations, a change of PTO status causes the 809-
DM to send out a comma separated list of values corresponding
to the PTO status followed by the number of channels being
monitored. The transmit is done after a programmable delay.
The next example shows the PTO disengaged and only two
channels being monitored.
The next example shows the PTO engaged and all six compartments
having invalid data.
The level reading will always be five characters including the
decimal place. If no decimal place is present a space character will
pad the least significant byte. NOSIG shows no valid level data.
ERROR shows level data error.
Set PTO configuration
There are four items to configure:
1. Resistor pullup on or off.
2. PTO engagement polarity high or low.
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p,E,11.16,79.00, 0.00, 0.00, 0.00, 0.00<CR>
p,D,11.16,79.00<CR>
p,E,NOSIG,NOSIG,NOSIG,NOSIG,NOSIG,NOSIG<CR>
Red text represents
Blue text represents
Press the corresponding
809-DM Manual