Flintec FT-13 - Appendix 4: Profibus DP; ProfiNet Data Structure

FT-13 Technical Manual, Rev. 1.40 March 2013
Page 49 of 56
APPENDIX 4: PROFIBUS DP / PROFINET DATA STRUCTURE
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)