Eastron SDM72D-M - Modbus Holding Register Functions; Key Modbus Configuration Parameters

B+G e-tech EASTRON SDM72D-M User Manual V1.5 English version
B+G e-tech GmbH www.eastron-germany.de Seite 15 von 16
Holding Registers
Holding register are used to store and display instrument configuration settings. All holding registers not listed
in the table below should be considered as reserved for manufacturer use and no attempt should be made to
modify their values.
The holding register parameters may be viewed or changed using the Modbus Protocol. Each parameter is
held in two consecutive 4X registers. Modbus Protocol Function Code 03 is used to read the parameter and
Function code 10 is used to write. Write only to one parameter per massage.
Address
Register
Parameter
Number
Parameter
Modbus Protocol
Start Address Hex
Valid range
Mode
High Byte
Low Byte
40019
10
Parity / Stop
00
12
Write the network port parity/stop bits for
MODBUS Protocol, where:
0 = One stop bit and no parity, default.
1 = One stop bit and even parity.
2 = One stop bit and odd parity.
3 = Two stop bits and no parity.
Length : 4 byte
Data Format : Float
r/w
40021
11
Modbus Address
00
14
Write the network port node
address: 1 to 247 for MODBUS Protocol,
default 1.
Length : 4 byte
Data Format : Float
r/w
40025
13
Password
00
18
Read：get password
Write：change password
Length : 4 byte
r/w