8555-M210-O1 Rev R 758C Owner’s 32
WEIGHT ON DEMAND FORMATS
Weight On Demand
If the continuous output was not selected for the serial port, Cont1=0, the USB Device port,
Cont2=0 or the optional Ethernet port, Cont3=0 and the indicator is connected to a
computer for transmission of weight data to a PC-based EMR (electronic medical record)
software program, it will transmit a single set of weight data each time the computer sends an
weight request “ENQ” (hex 05) or a SMA weight request “W”. This is known as Weight-On-
Demand. Examples and explanation of the data format transmitted are shown below.
The host device (computer) sends:
ENQ (hex 05)
The 758C will respond:
<s><xxxxxx><d><uu><m><cc><cr>
Where:
s = Sign "-" = negative, " " (blank) = positive
xxxxxx.xxx = Weight Six digits
d = Decimal point Added to string if enabled in setup
uu = Units kg
m = Mode G = Gross, N = Net
cc = Weight Status OC = overcap
CZ = center of zero
MO = motion
ee = weight not currently being displayed
cr = Carriage Return (hex 0D)
SMA Standard Format
The host device (computer) sends:
<lf> W <cr>
The 758C will respond:
<lf>W01,<s><r><n><m><f><xxxxxx.xxx><uuu><cr>
Where:
lf = Line Feed
W01 W01 The text “W01”
, Comma (hex 2C)
s = Flags Z= center of Zero, O = Overcap, E = zero Error,
e = weight not currently being displayed
r = Range 1, 2, 3, ...
n = Mode G = Gross, T = Tare, N = Net
M = Motion M = Motion, " "(blank) = no motion
f = Custom Custom flag
xxxxxx.xxx = Weight Six digits with decimal point
uuu = Units None, lb, kg, oz, g, st
cr = Carriage Return (hex 0D)
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