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ADVANCED USE MANUAL DD700
2.2.22 RTU Modbus(OPTIONAL)
The terminal can be connected in slave mode with Modbus-RTU protocol, via a serial port; in
addition to the standard configuration parameters of serial interface specific parameters are
available:
• Terminal number: 1 to 255, sets the number used to communicate with the terminal
• Select Data Format: Select the byte order if Big or Little endian.
• Swap var Float registers: in the case of float variables, allows you to change the order of 2 Modbus
registers.
These last two parameters do not affect reading variables, but fit only the coding convention and
interpretation of values
Input Register (op code=04)
Variable
Type
register
notes
Single scale or selected scale, if multi-scale term.
Gross weight
float
0-1
Net weight
float
2-3
Status
Int
4
1)
Weight in divisions
Int
5
Max capacity
float
6-7
Division
float
8-9
Gross weight (high resolution)
float
10-11
Net weight (high resolution)
float
12-13
MPP Commands
MPP status
int
20
MPP, 2)
MPP code
Long
21-22
MPP
Weight 1 MPP
Float
23-24
MPP
Weight 2 MPP
Float
25-26
MPP
Extraction mode
Extraction status
int
41
MPP, 2)
Extracted
float
42-43
MPP
Initial weight
Float
44-45
MPP
Digital cells (if applicable)
Number of cells
int
2000
status (scale / cells)
Int
2001
4)
Data cell1 / data 1
float
2002-2003
4)
Data cell2 / data 2
float
2004-2005
4)
Data cell3 / data 3
float
2006-2007
4)
Data cell4 / data 4
float
2008-2009
4)
Data cell5 / data 5
float
2010-2011
4)
Data cell6 / data 6
float
2012-2013
4)
Data cell7
float
2014-2015
Data cell8
float
2016-2017
Data cell9
float
2018-2019
Data cell10
float
2020-2021
Data cell11
float
2022-2023
Data cell12
float
2024-2025
Holding Register (op code=03, 06, 16)
Variable
Type
register
notes
Tare
float
0-1
Tare P1
float
2-3
If enabl.
Tare P2
float
4-5
If enabl.
Selected scale
Int
10
3)
Extraction mode
