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
SRD
request
e.g..:DB
Header
DATA1
(...2
(...3
S5 add.
ANZW
ANR
SSNR
PAFE
FB
RECEIVE
e.g..:DB
Header
DATA1
S5 add.
ANZW
ANR
SSNR
PAFE
FB
RECEIVE
e.g.:DB
Header
Anzw = Job_complete_without_error
(...4
(...4
1
2
3
4
5
)
H
)
H
)
H
)
H
)
Control program receiver
Anzw = Job_complete_without_error
SRD ind
Data2
(data)
(...1 or
H
(...5
H
)
Fig. 8.11 Transmitting Data with Request for Receiver to Return Data ( SRD)
Free Layer 2 Communication B8976060/02
Volume 1 8 - 26