Sinee EM730 Series, User Manual

Page: 320 / 345

User Manual of EM730/EM730E Series Inverter
320
The register data in the response message is divided into two bytes in each register. The
first byte of each register includes high-order bits and the second byte includes low-order bits.

Request PDU
Function code 1 byte 0x03
Starting Address 2 bytes 0x0000 - 0xFFFF
Number of registers 2 bytes 1 - 16

Response PDU
Function code 1 byte 0x03
Number of bytes 1 byte 2×N*
Register value N*×2 bytes
N* = number of registers

Error PDU
Error code 1 byte
0x83
Exception code 1 byte 01, 02, 03 or 04
Below is an example of a request to read the registers F19.00 to F19.05 (relevant
information about the last protection):
Request Respond
Domain name (0x) Domain name (normal) (0x) Domain name
(abnormal)
(0x)
Function code 03 Function code 03 Function 83
Starting address
Hi 13 Number of bytes 0C
Exception code
03
(example,
the same
below)
Starting address
Lo 00 Register value Hi
(F19.00) 00
Number (Hi) of
registers 00 Register value Lo
(F19.00) 11
Number (Lo) of
registers 06 Register value Hi
(F19.01) 00
Register value Lo
(F19.01) 00
Register value Hi
(F19.02) 00
Register value Lo
(F19.02) 00