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SI-Ethernet User Guide
143
Issue: 3
Sa
fe
In
Me
ch
E
Get
ting s
ta
P
K
an
PC T
Sec
Di
G
Ind
ex
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
Slave response data
Byte
Hex
value
Description
Byte
Hex
value
Description
0-1
00 2A
Transaction ID
(42)
0-1
00 2A
Transaction ID
(42)
2-3
00 00
Protocol ID
(0=TCP/IP)
2-3
00 00
Protocol ID
(0=TCP/IP)
4-5
00 17
Length
(Bytes=6)
4-5
00 0F
Length
(Bytes=15)
6
FF
Unit identifier
(FF= Drive)
6
FF
Unit identifier
(FF= Drive)
7
17
Function code
(23)
7
17
Function code
(23)
8-9
47 E7
Start read register
(
20.023
)
8
0C
Length of data
(Bytes=12)
10-11
00 06
Number of read registers
(6)
9-12
?? ??
?? ??
Register data 0
(Pr
20.024
)
12-13
47 E4
Start write register
(
20.020
)
13-16
?? ??
?? ??
Register data 1
(Pr
20.025
)
14-15
00 06
Number of write registers
(6)
17-20
?? ??
?? ??
Register data 2
(Pr
20.026
)
16
0C
Length of register data to
write
(Bytes=12)
17-20
00 00
30 39
Register data 0
(12345)
21-24
00 00
30 39
Register data 1
(12345)
25-28
00 00
30 39
Register data 2
(12345)