E 67, 2 modbus tcp data structure – Flintec FT-10xx User Manual

Page 68

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FT-10 Smart Process Indicator, Technical Manual, Rev. 1.0, January 2014

11.2 Modbus TCP Data Structure

If the instrument is programmed for Modbus TCP/IP, it can be used as a Modbus TCP/IP slave on Ethernet
communication network. Functions code ‘0x03’ (Read Holding Registers) and ‘0x10’ (Preset Multiple Regs)
are supported.

Modbus TCP/IP High-Low: In two word registers, the data is stored to the registers in big-endian format.
Least significant word is stored to the highest register address; and most significant word is stored to the
lowest register address.
Modbus TCP/IP Low-High: In two word registers, the data is stored to the registers in little-endian format.
Least significant word is stored to the lowest register address; and most significant word is stored to the
highest register address.

Parameter set-up:
Set Ethernet Data Format

: Modbus

TCP/IP

High-Low

or Modbus

TCP/IP

Low-High

Ethernet Address

: 01 to 255

Make the Ethernet parameter settings.
Please find Modbus information in the web site of http://www.modbus.org

Modbus TCP/IP Command Table;

Address

R/W

Word

Command

Definition

40001

R

2

Indicated weight

( Net if the indication is in Net )

40003

R

1

Status

D0

0

– System Ready

1

– System Busy

D1

0

– Error ( D13-D15

)

1

– Data ok

D2

0

– Weight Stable

1

– Weight unstable

D3

0

– Gross Mode

1

– Net mode

D4

D11

Not used

D12

0

– Out of zero range 1 – Weight is in zero range

D13
D14
D15

Error Code

De
c

Description

0

No Errors

1

ADC out of range

2

ADC over range

3

ADC under range

4

System error

5

In programming mode

6

Low/High voltage det.

40004

R

2

Tare weight

40006

R

2

Gross weight

40008

R

1

Status

Motion, Net mode, Data ok, (image of register 40003)

40009

R/W

1

Control

Dec

Description

0

None

1

Zero

2

Tare

3

Clear

4

Print

40010

R/W

20

Not used

40030

R/W

1

Calibratio
n

Dec

Description

0

None

188

Adjust Zero Calibration

220

Adjust Span Calibration

( 1 )

236

Total Load Cell Capacity

( 1 )

eCal
Coefficients

250

Average mV/V

( 1 )

171

Dead Load

( 1 )

23205

Save the coefficients of eCal

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