Salter Brecknell LPS-150 Operation Manual - page 13
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 (
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
H1H2H3 Three status bytes
Polarity character including minus sign for negative weight and a
space character for positive weight
W1-W7 weight data
U1U2: measure units, kg, lb, or oz
2.4) Commands and response
(1) Command: W
(57h 0dh)
Response:
①
② F>________u1u2 ③ Note: If the weight unit is lb: oz, U1U2= oz in above item ①②③ . 19 ④ w1w2w3w4w5w6 ---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 w1w2w3w4w5lb Or w1w2w3w4lb ----The current unit is lb: oz. (2) Command: S (53h 0dh) Response: (3) Command: Z (5ah 0dh) Response: Zero function is activated and it returns to current scale status. just like pressing ZERO/ON/OFF button: If ZERO function cannot be activated, it will return to current scale status. (4) Command: T (54h 0dh) Response: TARE function is activated, and then returns scale status. just like pressing TARE button: If TARE function cannot be activated, it will return to current scale status. (5) Command: U (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. If the weight unit is lb:oz, U1U2= lb oz (6) Command: L (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. (7) Command: X (58h 0dh) Response: power off the scale, just like press down the ON/OFF key to turn off the scale. 20