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LIST OF THE MODBUS PROTOCOL HOLDING REGISTERS
The instrument parameters that can be read or programmed via the communication interfaces available
on the instrument, depending on the hardware configuration, are listed in the following table.
R type registers are readable while W type are writeable.
In case of Modbus TCP protocol, the address of the instrument (the “Unit Identifier” field) must always
be FFh.
If a fieldbus is used (different from the Modbus), only the R or R/W registers will be in the input area
and only the W or R/W registers will be in the output area.
The registers are 16 bit in size.
Address Holding Register R/W Notes
0001 Status Register R See relevant table.
0002 Gross weight (MSB) R INT value. - Most significant word
0003 Gross weight (LSB) R INT. value - Less significant word
0004 Net weight (MSB) R INT. value - Most significant word
0005 Net weight (LSB) R INT. value - Less significant word
0006 Peak (MSB) R INT. value - Most significant word
0007 Peak (LSB) R INT. value - Less significant word
0008 Digital Inputs R See relevant table
0009 Digital Outputs R
0101 Weighted Net weight (MSB) R INT. value - Most significant word
0102 Weighted Net weight (LSB) R INT. value - Less significant word
0103 Weight code (MSB) R INT. value - Most significant word
0104 Weight code (LSB) R INT. value - Less significant word
0201 Set-Point 1 (MSB) R/W INT. value - Most significant word
0202 Set-Point 1 (LSB) R/W INT. value - Less significant word
0203 Set-Point 2 (MSB) R/W INT. value - Most significant word
0204 Set-Point 2 (LSB) R/W INT. value - Less significant word
0501 Data Register (MSB) W INT. value - Most significant word (See relevant table)
0502 Data Register (LSB) W INT. value - Least significant word (See relevant table)
0503 Command Register W See relevant table.
1001 Stand-by function R/W INT. value
1002 Keypad Lock function R/W See relevant table
1003 Password function R/W INT. value
1004 Peak function R/W See correspondence on page 47
1005 Data-Logger function R/W See correspondence on page 48
1006 Data-Logger Trigger R/W See correspondence on page 48
1007 Data-Logger function R/W See correspondence on page 48
1101 Weight division value (*) R/W
See relevant table.
1102 Decimals (*) R/W
1103 Capacity of load cells (MSB) (*) R/W INT. value - Most significant word
1104 Capacity of load cells (LSB) (*) R/W INT. value - Less significant word
1105 Sensitivity of load cells (*) R/W INT. value
1106 Fixed Tare (MSB) (*) R/W INT. value - Most significant word
1107 Fixed Tare (LSB) (*) R/W INT. value - Less significant word
1108 Gravity Calibration (MSB) (*) R/W INT. value - Most significant word
1109 Gravity Calibration (LSB) (*) R/W INT. value - Less significant word
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