Manual

FAD-30 Technical Manual, Rev. 1.06 December 2012 Page 19 of 48
5.8. Continuous Output Data Structure (for FAD-30 + FAD-30MB
only)
The continuous data output of the instrument will be transmitted in the following data structure at the speed
which is determined by the baud rate and the data length. The definition of the continuous data format is
described below.
In weighing mode and force mode:
Status
Indicated
Tare
STX
STA
STB
STC
D5
D4
D3
D2
D1
D0
D5
D4
D3
D2
D1
D0
CR
LF
CHK
In count mode:
Status
Count Data
Not used
STX
STB
D7
D6
D5
D4
D3
D2
D1
D0
D5
D4
D3
D2
D1
D0
CR
LF
CHK
The definition of the status bytes STA, STB and STC is described below.
Definition Table for Status A (STA)
Bits 0, 1 and 2
Bits 3 and 4
Bit 5
Bit 6
Bit 7
0
1
2
Decimal point
3
4
Increment size
Always 1
Always 1
X
0
0
0
XXXXOO
1
0
X 1
1
0
0
XXXXXO
0
1
X 2
0
1
0
XXXXXX
1
1
X 5
1
1
0
XXXXX.X
0
0
1
XXXX.XX
1
0
1
XXX.XXX
0
1
1
XX.XXXX
1
1
1
X.XXXXX
Definition Table for Status B (STB)
Bit 0
Gross = 0
Net = 1
Bit 1
Weight positive = 0
Weight negative = 1
Bit 2
No Error = 0
Error = 1
Bit 3
Stable = 0
Unstable = 1
Bit 4
Always = 1
Bit 5
Always = 1
Bit 6
Not power on zeroed
Zeroed with power on zero = 1
Bit 7
x
Definition Table for Status C (STC)
Bit 0
Always 0
Bit 1
Always 0
Bit 2
Always 0
Bit 3
Always 0
Bit 4
Always 1
Bit 5
Always 1
Bit 6
Always 0
Bit 7
x
CHK (Checksum) = 0 – (STX STATUS A ..... LF)
Error Messages: UNDER, OVER, A.OUT, L-VOLT, H-VOLT are annunciated in the Indicated or Count Data
fields.
Note: Weight data is represented with right alignment, error messages with left alignment.