
8.
1. RS-232 connection between the Scale and the Host:
DB9 Female
RXD Pin 3
TXD Pin 2
GND Pin 5
NOTE: Pins 1,4,6,7,8 & 9 are not connected.
NOTE: The RS232 function will not operate if PH has been set to 0 or 2.
(See User Parameters on Page 7.)
2. RS232 Function Parameter Settings (See User Parameters on Page 7)
0 No RS232 function. It will not transmit or receive any data although the scale is equipped with
RS232. The RS232 function can be only activated when scale is in normal weighing mode.
1 Continuous output of the current displayed reading and unit, and it does not receive any data.
The output format is one of the below:
<LF>< reading, minus, decimal point, weight unit>GR<CR><EXT>
<LF>< reading, minus, decimal point, weight unit>NT<CR><EXT>
2 Manually outputs display data when PRINT is pressed. The output format is one of the below:
<LF>< reading, minus, decimal point, weight unit>GR<CR><EXT>
<LF>< reading, minus, decimal point, weight unit>NT<CR><EXT>
3 The baud rate and data format are fixed with responses to serial commands being within 300
milliseconds. One second should be adequate for use as a time-out value by remote device.
3. Weight Field
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”). Units of measure abbreviations are always lower case.
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 has an error, it will return nine ‘-’ characters.
The character will be ‘-’ for negative weight or a space character for positive weight. Minus sign
follows after the first digit.
Useless leading zeroes before digits are suppressed.
4. 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. Refer to Status Byte Table on page 9.
<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