Communications configuring
3-12 System- and communication configuring D7-SYS - SIMADYN D
Edition 12.2003
Transmitte
Receive
KVL = channel administrator
NDP =net data buffer
KVL
NDP
Fig. 3-1 Data transfer in the "Handshake" mode
The "Refresh" data transfer mode is used,
• if the latest data is always to be made available to a receiver and
• if there is precisely one receiver for each transmitter.
"Refresh" overwrites when it transfers data. The transmitter always
deposits the latest data set in the channel without the receiver having
acknowledged that it has received the last data set. There are two net
data buffers for data transfer, which are used as alternating buffer
system. The transmitter flags in which buffer the latest data are located.
Transmitter
KVL
NDP1
Receiver
NDP2
KVL = channel administrator
NDP =net data buffer
Fig. 3-2 Data transfer in the "Refresh" mode
"Refresh" data
transfer mode
To Next Page
Loading...
