See "Enhanced Buffered Read Words (Er) - Pepperl+Fuchs IC-KP-B7-V95 Manual

IC-KP-B7-V95
Commands
Enhanced buffered read words (ER):
Byte
Byte 0
Byte 1
Byte 2
Byte 3
Response:
Byte
Byte 0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
...
Byte N
The R/W head makes attempts until successful, to read <WordNum> 32-bit words
from the address <WordAddr>. Only modified data is transferred via the interface.
When a read/write tag leaves the detection range, the status '05h' (read
command) is output.
42
Contents
Command code (19h)
Word number/Ident channel/Toggle bit
Word address
Word address
Contents
Command code (19h)
Word number/Ident channel/Toggle bit
Status
Reply counter
Data 00h ... FFh
Data 00h ... FFh
Data 00h ... FFh
Data 00h ... FFh
Data 00h ... FFh
Data 00h ... FFh
1)
1. N = 4 x <WordNum> + 5; Ethernet/IP: N = 4 x <WordNum> + 3
Bit no.
7 6 5 4 3
0 0 0 1 1
<WordNum> <Channel>
<WordAddr>(high byte)
<WordAddr> (low byte)
Bit no.
7 6 5 4 3
0 0 0 1 1
<WordNum> <Channel>
<Status>
<ReplyCounter>
<Data>
<Data>
<Data>
<Data>
<Data>
<Data>
2 1 0
0 0 1
<T>
2 1 0
0 0 1
<T>