Rockwell Automation 1775-KA PLC-3 Communication Adapter Module User Manual - Manual (Page 119)

Full-Duplex Protocol
Chapter 10
10Ć15
Figure 10.8
Receiver for Full-Duplex Protocol
RCVE CHAR
LAST = NAK
Receive
Message
?
LAST = ACK
LAST = NAK
Send DLE LAST
Yes
No
Yes
No
10045–I
CHAR =
Receive DLE ETX
BCC
?
BCC
OK
?