2.2) The length of the weight field will be 7 digit weight data, one for minus
sign, one for decimal point, two for measure unit (e.g. “lb”, “kg”). If the unit
is lb:oz, another two for “lb” and one for a space (<sp>) after lb. Units of
measure abbreviations are always lower case.
a) If the weight is overcapacity, the scale will return nine ‘^’ characters
(the field of minus sign, decimal point, weight data is filled by ‘^’).
If the weight is under capacity, it will return nine ‘_’ characters (the field
of minus sign, decimal point, and weight data is filled by ‘_’).
If the zero point is error, it will return nine ‘_’ characters.
b) The character will be ‘-’ for negative weight or a space character for
positive weight. Minus sign follows after the first digit.
c) Useless leading zero before digits is suppressed.
2.3) Key to symbols used
<LF> Line Feed character (hex 0AH)
<CR> Carriage Return character (hex 0DH)
<ETX> End of Text character (hex 03)
<SP> Space (hex 20H)
H1H2H3 Three status bytes
<p> Polarity character including minus sign for negative weight and a
space character for positive weight
W1-W7 weight data
<dp> decimal point
U1U2: measure units, kg, lb, or oz
2.4) Commands and response
(1) Command: W<CR>
(57h 0dh)
Response:
①
<LF>^^^^^^^^^u1u2<CR><LF>H1H2H3<CR><ETX>---over capacity
②<L
F>________u1u2<CR><LF> H1H2H3 <CR><ETX>---under capacity
③
<LF>---------u1u2<CR><LF> H1H2H3<CR><ETX>---zero-point error
Note: If the weight unit is lb: oz, U1U2= oz in above item
①②③
.
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④
<LF><p>w1w2w3w4w5w6<dp>w7u1u2<CR><LF>H1H2H3<CR><ETX>
---Scale is stable, and the current weight unit is kg or lb. With or without decimal
point and the position is as per the P9 setting and current unit.
⑤
<LF><p>w1w2w3w4w5lb<sp>w6w7<o><z><CR>H1H2H3<CR><ETX>
Or
<LF><p>w1w2w3w4lb<sp> w5w6<dp>w7oz<CR>H1H2H3<CR><ETX>
----The current unit is lb: oz.
(2) Command:
S<CR>
(53h 0dh)
Response: <LF>
H1H2H3
<CR><ETX>
(3) Command:
Z<CR>
(5ah 0dh)
Response: Zero function is activated and it returns to current scale status. just
like pressing ZERO/ON/OFF button:
<LF>
H1H2H3
<CR><ETX>
If ZERO function cannot be activated, it will return to current scale status.
(4) Command:
T<CR>
(54h 0dh)
Response: TARE function is activated, and then returns scale status. just like
pressing TARE button:
<LF>
H1H2H3
<CR><ETX>
If TARE function cannot be activated, it will return to current scale status.
(5) Command:
U<CR>
(55h 0dh)
Response: Changes units of measure and return scale status with new units,
just like pressing UNIT button. The new measure unit should be allowed to
use as per P11 setting.
<LF>u1u2<CR><LF>
H1H2H3
<CR><ETX>
If the weight unit is lb:oz, U1U2= lb oz
(6) Command:
L<CR>
(4ch 0dh)
Response: If Hold function can be activated, it will enable/disable hold (lock)
function, like the
HOLD
key is pressed, and returns scale status.
<LF>
H1H2H3
<CR><ETX>
(7) Command:
X<CR>
(58h 0dh)
Response: power off the scale, just like press down the
ON/OFF
key to turn
off the scale.
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