Appendix 4: modbus rtu data structure – Flintec FT-11D User Manual
Page 42
FT-11(D) Technical Manual, Rev. 1.35 November 2010
Page 42 of 52
Appendix 4: Modbus RTU Data Structure
If the instrument is programmed for Modbus RTU, it can be used as a Modbus RTU slave on a RS485
communication line or on the Ethernet communication line. The Modbus slave adress is defined in the
parameter [Address]. Function code “0x03” and function code “0x10” are supported.
Read
command
Modbus
register
Function
code
Register
address
No. of
registers
Definition
Display value
40 001
03
00,00
00,02
Current display value; Gross or Net
D0
Busy
1 – System Busy
D1
Data ok
1 – Data ok
0 – Error (See D13…D15)
D2
Motion
1 – Weight is not stable
D3
Net Mode
1 – Net mode
D4
N/A
D5
Output 1
D6
Output 2
D7
Output 3
1 – Output active
D8
Input 1
D9
Input 2
D10
Input 3
1 – Input active
D11
D12
N/A
0 No
Errors
1
ADC out of range
2 ADC
overrange
3 ADC
underrange
4 System
fault
Status 40
003 03 00,02 00,01
D13
D14
D15
Transfer
binary (D13
to D15) to
decimal and
compare to
error code
5
FT not in weighing mode
Tare weight
40 004
03
00,03
00,02
Current tare weight
Gross Weight
40 006
03
00,05
00,02
Current gross weight
Setpoint 1
40 012
03
00,0B
00,02
Setpoint 1 buffer memory; replied value in hex
Setpoint 2
40 014
03
00,0D
00,02
Setpoint 2 buffer memory; replied value in hex
Setpoint 3
40 016
03
00,0F
00,02
Setpoint 3 buffer memory; replied value in hex
1
Ready for calibration
3
Zero calibration in process
4
Span calibration in process
9
Error (Refer to D8 ... D15 )
D0…D7
Calibration
Process
Status
1
Calibration Timeout –
Restart calibration
2
ADC Error
– Re-energize the instrument
– If seen again, change board.
3
Instrument cannot be calibrated –
Check load cell cable
– Re-energize the instrument
34
Instrument cannot be calibrated –
Load cell signal is too low or too
high
35
Calibration Error
– Calibration test weight is too
small, increase calibration weight
value (40031-32)
– Check load cell connections
37 Scale
unstable
– Wait until scale becomes stable
– Check grounding wiring
38
Calibration Jumper is not installed-
Check Calibration jumper
Calibration
Status
40 033
03
00,01
D8…D15
Calibration
Errors
1
Ready for calibration