Fairbanks FB2255 Series Instrument PC2255 PC Software Utility Program - Manual (Page 74)

Appendix 1: Data Output Formats
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J. P Ship, Continued
3. UU = A two character weight identifier. If the scale is configured to
weigh kilograms, a "KG" (uppercase letters) will be returned, if
configured for pounds, "LB" (uppercase letters) will be returned.
4. The decimal point is returned by the scale as part of the ASCII string.
5. Interpretation of scale status digits
The high order nibble of each status byte has a value of 3 (0011 B). The low order
nibble of the first and second bytes are defined as follows:
1st Byte: Bit 0 - High = scale is in motion
Low = scale is stable
Bit 1 - High = scale at zero
Low = scale not at zero
Bit 2 - Low = not used
Bit 3 - Low = not used
2nd Byte: Bit 0 - High = scale is below zero
Low = scale is not below zero
Bit 1 - High = scale is over capacity
Low = scale is not over capacity
Bit 2 - High = scale ROM program failure
Low = scale ROM okay
Bit 3 - High = faulty calibration data*
Low = scale calibration okay
*This is the result of an incorrect checksum
An example of the scale response to an "S" command would be:
S20
The following status conditions are in effect for this response:
•scale at zero
•scale is not below zero
•scale is not over capacity
•scale ROM okay
•scale calibration okay