Brecknell PS3000 Mode D'emploi page 11

RS-232 Data Commands for SBI Protocol
The RS232 can be set so a bidirectional connection can be established between the indicator and the host. To
establish this connection, set parameter P4 to 7 and configure setting P5 (baud) and P6 (parity) to host device.
Commands can then be sent from the host to the indicator using the following commands (ensure the letters
entered are in CAPS) (<CR> - Enter)
Command Action
W<CR> Takes a reading
Over capacity -
Under capacity -
Zero point error -
Reading (kg or lb)
S<CR> Prints status bytes
Z<CR> Zeros the scale
T<CR> Sets up a tare
U<CR> Changes the units
L<CR> Activates the hold
function
X<CR> Switches off the
scale
? Unrecognised
command
Key Symbols:
<LF>
<CR>
<ETX>
<SP>
H1H2H3
<p>
W1-W7
<dp>
U1U2
Output Status Bit Meaning:
Bit Byte 1
0 = Stable
0
1 = Unstable
0 = Not at zero
1
point
1 = At zero point
Always 0
2
0 = eprom OK
3
1 = eprom error
Response
<LF>^^^^^^^^^u1u2<CR><LF>H1H2H3<CR><ETX>
<LF>_______u1u2<CR><LF>H1H2H3<CR><ETX>
<LF>----------u1u2<CR><LF>H1H2H3<CR><ETX>
<LF><p>w1w2w3w4w5w6<dp>w7u1u2<CR><LF>H1H2H3<CR><ETX>
<LF>H1H2H3<CR><ETX>
<LF>H1H2H3<CR><ETX>
<LF>H1H2H3<CR><ETX>
<LF>u1u2<CR><LF>H1H2H3<CR><ETX>
<LF>H1H2H3<CR><ETX>
Indicator switches off.
<LF>?<CR><ETX>
Line feed
Carriage return
End of text character
Space
3 status bytes
Polarity character, including minus sign
for negative weigh, and a space
character for positive
Weight data
Decimal point
Unit measure (kg, lb or oz)
Byte 2
0 = Not under
capacity
1 = Under capacity
0 = Not over
capacity
1 = Over capacity
Always 0
Always 0
Byte 3
00 = Not defined
01 = Normal working mode
10 = Hold working mode
11 = Not defined
0 = Gross weight
1 = Net weight
Always 0