
Table of Contentsii
Using Halfduplex Protocols to Send and
Receive Messages 3-1. . . . . . . . . . . . . . . . . . . . . . .
Halfduplex Protocol Message Transmission 3-2. . . . . . . . . . . .
Transmitter and Receiver Message Transfer 3-3
. . . . . . . . . . . .
Halfduplex Protocol Environment 3-3
. . . . . . . . . . . . . . . . . . . .
Message Characteristics 3-7
. . . . . . . . . . . . . . . . . . . . . . . . . .
Master
Polling Responsibilities
3-7. . . . . . . . . . . . . . . . . . . . . .
Duplicate
Detection
3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inactive
Slave Polling
3-7. . . . . . . . . . . . . . . . . . . . . . . . . . .
Full Sinks 3-8
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Simplified Network Layer 3-8
. . . . . . . . . . . . . . . . . . . . . . . .
Slave Transceiver Actions 3-9
. . . . . . . . . . . . . . . . . . . . . . . . . .
HalfDuplex Protocol Diagrams 3-11
. . . . . . . . . . . . . . . . . . . . . .
Normal Message Transfer 3-12
. . . . . . . . . . . . . . . . . . . . . . . .
Message T
ransfer with Invalid BCC/CRC
3-12. . . . . . . . . . . . .
Message Transfer with ACK Destroyed 3-13
. . . . . . . . . . . . . .
Poll with No Message Available 3-13
. . . . . . . . . . . . . . . . . . . .
Poll with Message Returned 3-14
. . . . . . . . . . . . . . . . . . . . . .
Duplicate Message Transmission 3-15
. . . . . . . . . . . . . . . . . .
Message Sink Full, Case 1 3-16
. . . . . . . . . . . . . . . . . . . . . . .
Message Sink Full, Case 2 3-17
. . . . . . . . . . . . . . . . . . . . . . .
Using Fullduplex Protocol to Send and
Receive Messages 4-1. . . . . . . . . . . . . . . . . . . . . . .
Fullduplex Protocol Message Transmission 4-2. . . . . . . . . . . . .
Fullduplex Protocol Environment 4-3
. . . . . . . . . . . . . . . . . . . .
Message Characteristics 4-4
. . . . . . . . . . . . . . . . . . . . . . . . . .
Transmitter and Receiver Message Transfer 4-4
. . . . . . . . . . . .
How the Transmitter Operates 4-5
. . . . . . . . . . . . . . . . . . . . .
How the Receiver Operates 4-7
. . . . . . . . . . . . . . . . . . . . . .
Fullduplex Protocol Diagrams 4-10
. . . . . . . . . . . . . . . . . . . . . . .
Normal Message Transfer 4-10
. . . . . . . . . . . . . . . . . . . . . . . .
Message Transfer with NAK 4-11
. . . . . . . . . . . . . . . . . . . . . .
Message Transfer with T
imeout and ENQ
4-12. . . . . . . . . . . . .
Message Transfer with ReTransmission 4-13
. . . . . . . . . . . . .
Message Transfer with Message Sink Full 4-14
. . . . . . . . . . . .
Message Transfer with NAK on Reply 4-15
. . . . . . . . . . . . . . .
Message Transfer with Timeout and ENQ for the Reply 4-16
. . .
Message Transfer with Message Source Full on the Reply 4-17
.
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