Fairbanks FB2550 DAT SERIES DRIVER ACCESS TERMINAL - Manual (Page 132)

Appendix I: Fieldbus Interface Reference Data
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C. SOFTWARE SPECIFICATIONS
OUTPUT DATA FORMAT TO GATEWAY
The Gateway takes a Serial String and remap the data to the format needed for the
Fieldbus type installed per the register.

The following is the definition of the Serial String for one (1) scale.
– The Scale ID is extracted from Status Word 0 .
– The data is placed in the appropriate Fieldbus Registers based on this scale
ID.
– Status Word Data is sent as binary values MSB first over the Serial Channel.
– Weight data is sent as six (6) characters representing a 6-digit decimal value
(000000 – 999999).
– This decimal value represents the weight multiplied by the scale factor, listed
in Command/Status Word 1 bits 0-2.
– The serial string is a fixed length of fifty-seven (57) bytes.
STX
character 1 byte, (02h)
Status word 0 2 bytes, (includes scale ID)
Status word 1 2 bytes,
Status word 2 2 bytes,
Unassigned data 6 characters (default ‘000000’)
Gross Weight 6 characters (example ‘002340’)
Tare Weight 6 characters,
Net Weight 6 characters,
Setpoint 1 6 characters,
Setpoint 2 6 characters,
Flow Rate 6 characters,
Unassigned data 6 characters,
CRC 1 byte,
ETX character 1 byte (03h)