Salter Brecknell PS3000HD - Manual (Page 10)

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) ( - Enter)
Command Action Response
W Takes a reading
Over capacity -
Under capacity -
Zero point error -
Reading (kg or lb)
^^^^^^^^^u1u2H1H2H3
_______u1u2H1H2H3
----------u1u2H1H2H3
w1w2w3w4w5w6w7u1u2H1H2H3
S Prints Status Bytes H1H2H3
Z Zeros the scale H1H2H3
T Sets up a tare H1H2H3
U Changes the units u1u2H1H2H3
L Activates the hold
function H1H2H3
X Switches off the
scale Indicator switches off.
? Unrecognised
command ?
Key Symbols
Line feed
Carriage Return
End of text character
Space
H1H2H3 3 status bytes
Polarity character including minus sign for negative weigh and a space character for positive.
W1-W7 Weight data
Decimal point
U1U2: Unit measure, kg, lb or oz
Output Status Bit Meaning:
Bit Byte 1 Byte 2 Byte 3
0 0=Stable 0=Not Under
Capacity 00=Not defined
1=Unstable 1=Under Capacity 01=Normal working mode
1 0=Not at zero
point 0=Not over
capacity 10=Hold working mode
1=At zero point 1=Over capacity 11=Not defined
2 Always 0 Always 0 0=Gross Weight
1=Net Weight
3 0=eprom OK
1=eprom error Always 0 Always 0
4 Always 1 Always 1 Always 1
5 Always 1 Always 1 Always 1
6 Always 0 Always 1 Always 0
7 Parity Parity Parity