Installation and User Guide
DS6x00 EtherNet/IP Scanner
Rev 1.02
7.
Item Data Handshaking Example (With Fragmentation)
The following is an example of how to send 2 Item Data packets, each 800 bytes, with a fragment size of 128.
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Last Item
Sequence
Number
Last Fragment
Sequence
Number
Item
Sequence
Number
Fragment
Sequence
Number
Item
Size
Fragment
Size
Fragment
Data Buffer
Description
0
0
0
0
0
0
NULL
Power Up
1
1
800
128
[0-127]
Datalogic sends fragment 1, Item Data Buffer 1
0
1
EIP Client acknowledges fragment 1
1
2
800
128
[128-255]
Datalogic sends fragment 2, Item Data Buffer 1
0
2
EIP Client acknowledges fragment 2
1
3
800
128
[256-383]
Datalogic sends fragment 3, Item Data Buffer 1
0
3
EIP Client acknowledges fragment 3
1
4
800
128
[384-511]
Datalogic sends fragment 4, Item Data Buffer 1
0
4
EIP Client acknowledges fragment 4
1
5
800
128
[512-639]
Datalogic sends fragment 5, Item Data Buffer 1
0
5
EIP Client acknowledges fragment 5
1
6
800
128
[640-767]
Datalogic sends fragment 6, Item Data Buffer 1
0
6
EIP Client acknowledges fragment 6
1
7
800
32
[768-799]
Datalogic sends fragment 7, Item Data Buffer 1
1
7
EIP Client acknowledges whole Item Data Buffer 1
2
1
800
128
[0-127]
Datalogic sends fragment 1, Item Data Buffer 2
1
1
EIP Client acknowledges fragment 1
2
2
800
128
[128-255]
Datalogic sends fragment 2, Item Data Buffer 2
1
2
EIP Client acknowledges fragment 2
2
3
800
128
[256-383]
Datalogic sends fragment 3, Item Data Buffer 2
1
3
EIP Client acknowledges fragment 3
2
4
800
128
[384-511]
Datalogic sends fragment 4, Item Data Buffer 2
1
4
EIP Client acknowledges fragment 4
2
5
800
128
[512-639]
Datalogic sends fragment 5, Item Data Buffer 2
1
5
EIP Client acknowledges fragment 5
2
6
800
128
[640-767]
Datalogic sends fragment 6, Item Data Buffer 2
1
6
EIP Client acknowledges fragment 6
2
7
800
32
[768-799]
Datalogic sends fragment 7, Item Data Buffer 2
2
7
EIP Client acknowledges whole Item Data Buffer 2
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