6.5 Write data
Write Single Holding Register
Query data / received reply
Frame
Byte
Value
Description
Remarks
Head
0
0x4D
Meter
Runs automatically continuously from
0x01...0xFF, e.g. 0x4D
1
0x06
Length
"6" for reading data
MODBUS
2
0xF7
Address
Always 247
3
0x06
Command
6 means writing
4
0x00
Register Index (Hi)
Register index (possible: 0 to 49), e.g.
H2
5
0x02
Register Index (Lo)
6
0x00
Register data (Hi)
Data of the queried register, e.g. 0xC8 (=
200)
7
0xC8
Register data (Lo)
8
0x00
do not use
9
0x00
do not use
Write Double Holding Register
Query data / received reply
Frame
Byte
Value
Description
Remarks
Head
0
0x5E
Meter
Runs automatically continuously from
0x01...0xFF, e.g. 0x5E
1
0x08
Length
"8" for writing data
MODBUS
2
0xF7
Address
Always 247
3
0x42
Command
66 (0x42) means writing
4
0x00
Register Index (Hi)
Index of the holding register, e.g. 0x1F (=
31)
5
0x1F
Register Index (Lo)
6
0x00
Register data 1 (Hi) Data of the queried register, e.g. H31,
value 0x0064 (=100)
7
0064
Register data 1 (Lo)
8
0x03
Register data 2 (Hi) Data of the queried register, e.g. H32,
value 0x03E8 (=1000)
9
0xE8
Register data 2 (Lo)
Operating Instructions
NETcon
D-G-64NE
Communication
L-BAL-E273-GB 1631 Index 001
Part.-No.
16/27