Rockwell Automation 1775-KA PLC-3 Communication Adapter Module User Manual - Manual (Page 125)

Full-Duplex Protocol
Chapter 10
10Ć21
Figure 10.13
Message Transfer with Message Sink Full
Not Full
OK
xxxx
xxxx
SOURCE XMTR LINK RCVR SINK
10050–I
DLE NAK
DLE STX xxxx DLE EXT BCC
DLE STX xxxx DLE EXT BCC
DLE ACK
DLE STX xxxx DLE ETX BCC
DLE ACK
Full
Full