Emerson Unidrive M700 User Manual page 128

Example
To write the value 12345 to drive parameters 0.20.021 through 0.20.023 and read the
values of parameters 0.20.024 through 0.20.026 (Transaction ID=42) using standard
addressing:
Master request data
Hex
Description
Byte
value
Transaction ID
0-1 00 2A
(42)
Protocol ID
2-3 00 00
(0=TCP/IP)
Length
4-5 00 17
(Bytes=6)
Unit identifier
6 FF
(FF= Drive)
Function code
7 17
(23)
Start read register
8-9 47 E7
(20.023)
Number of read registers
10-11 00 06
(6)
Start write register
12-13 47 E4
(20.020)
Number of write registers
14-15 00 06
(6)
Length of register data to
16 0C write
(Bytes=12)
00 00 Register data 0
17-20
30 39 (12345)
00 00 Register data 1
21-24
30 39 (12345)
00 00 Register data 2
25-28
30 39 (12345)
128
Slave response data
Hex
Byte Description
value
Transaction ID
0-1 00 2A
(42)
Protocol ID
2-3 00 00
(0=TCP/IP)
Length
4-5 00 0F
(Bytes=15)
Unit identifier
6 FF
(FF= Drive)
Function code
7 17
(23)
Length of data
8 0C
(Bytes=12)
?? ?? Register data 0
9-12
?? ?? (Pr 20.024)
?? ?? Register data 1
13-16
?? ?? (Pr 20.025)
?? ?? Register data 2
17-20
?? ?? (Pr 20.026)
SI-Ethernet User Guide
Issue: 1