Flintec FT-13 - Manual (Page 49)

FT-13 Technical Manual, Rev. 1.40 March 2013 Page 49 of 56
A PPENDIX 4: P ROFIBUS DP / P ROFI N ET D ATA S TRUCTURE
The output from FT-13 on PLC requests is in four words and according to the table below.
FT-13 Output
Bit no. 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
1
st
Word
W31
MSB
W30 W29 W28 W27 W26 W25 W24 W23 W22 W21 W20 W19 W18 W17 W16
2 nd Word W15 W14 W13 W12 W11 W10 W9 W8 W7 W6 W5 W4 W3 W2 W1
W0
LSB
3
rd
Word 0 0 0 0 In4 In3 In2 In1 Out8 Out7 Out6 Out5 Out4 Out3 Out2 Out1
4
th
Word Error 0 0 0 0 0 0 0 0
Cmd
Acc.
Net MT
Data
Ok
Data
Integrity
Here the first and the second word provide the weight information (32-bit signed integer; WXX = Weight bit XX;
W31 = MSD; W0 = LSD ) and the third and fourth word is the status as indicated below.
Bit no. 3
rd
Word Description
15…12 Not used Always 0
11 Digital Input 4
Input bit status (Active = 1)
10 Digital Input 3
9 Digital Input 2
8 Digital Input 1
7 Digital Output 8
Output bit status (Active = 1)
6 Digital Output 7
5 Digital Output 6
4 Digital Output 5
3 Digital Output 4
2 Digital Output 3
1 Digital Output 2
0 Digital Output 1
Bit no. 4
th
Word Description in normal operation
15
Error
000 No error
001 ADC out
010 ADC over
011 ADC under
100 System error
101 FT not in weighing mode or filling mode
14
13
12…5 Not used Always 0
4 Command accepted This bit is toggled when a new command was accepted
3 Net 0: Gross Mode; 1: Net Mode
2 Motion 0: No Motion ; 1: Motion
1 Data Ok 0: Check the error bits; 1: Scale is operating properly
0
Update in progress
(Data integrity)
0: PLC should not use the data; 1: use the data
(if 0, the instrument was updating the PLC interface shared memory while data was
read. The PLC interface should ignore this data and rescan.)
Bit no. 4
th
Word Description during the calibration
15 … 8 Calibration error
0000 0001 Calibration Timeout – Restart calibration
0000 0010
ADC Error – Re-energize the instrument
– If seen again, change board.
0000 0011
Instrument cannot be calibrated – Check load cell cable
– Re-energize the instrument
0010 0010 Instrument cannot be calibrated – Load cell signal is too low or too high
0010 0011
Calibration Error
– Calibration test weight is too small, increase calibration weight
– Check load cell connections
0010 0101
Scale unstable – Wait until scale becomes stable
– Check grounding wiring
0010 0110 Calibration Jumper is not installed- Check Calibration jumper
7...0 Calibration status
0000 0001 Ready for calibration
0000 0011 Zero calibration in process
0000 0100 Span calibration in process
0000 1001 Calibration error (see bit 15...8)