Technical data

Control program sender
S5 add.
ANZW
ANR
SSNR
PAFE
CP
Anzw = Job_active receive possible
Anzw = Job_active
(data)
CP
BUS
FB
SEND
Anzw = RECEIVE possible
SDA-
Request
e.g..:DB
Header
DATA
(...2
(...1 or
(...5
if previously
(...4
(...3
S5 add.
ANZW
ANR
SSNR
PAFE
FB
RECEIVE
e.g..:DB
Header
DATA
S5-Adr.
ANZW
ANR
SSNR
PAFE
FB
RECEIVE
e.g.:DB
Header
Anzw = Job_complete_without_error
(...4
(...4
1
2
4
3
5
H
)
H
)
H
)
H
)
H
)
H
)
H
)
Control program receiver
Anzw = Job_complete_without_error
Fig. 8.7 Transmitting and Receiving Data with Acknowledgment (Service SDA)
Free Layer 2 Communication B8976060/02
Volume 1 8 - 20