Eaton SWIRE-GW-MB, Manual, Page: 52 / 67

Operation through
MODBUS RTU
48
07/09 MN03407002Z-EN
Read commands
Read Holding Register (0x03)
Request message
Response message
ID 0x03 REG
high
REG
low
N
high
N
low
CRC
low,req
CRC
high,req
ID 0x10 REG
high
REG
low
D
n,high
… D
n,low
CRC
low,res
CRC
high,res
0x03 Read Holding Register
REG Register address of the lowest register to be read out
(register = register address-40001)
N Number of registers to be read out
D Content of registers to be read out. The register with
the lowest address is read out first.
CRC
req
Checksum of the request message
CRC
res
Checksum of the response message