Technical data

Program example of sending a control command to a DP slave
Explanation of Fig. 11.39:
The special service to send "Global_Control commands" to the DP slave is
triggered with SEND A-NR: 209 (job field transferred) and acknowledged
locally by the CP with RECEIVE A-NR: 209.
S5-Adr.
ANZW
ANR
SSNR
PAFE
CP
Job
L2-DP bus
FB
SEND
A-NR:
209
S5-Adr.
ANZW
ANR
SSNR
PAFE
FB
RECEIVE
Anzw = job_complete_without_error
(...4
H
)
Control program
Job
field
Anzw = job_active
(...2
H
)
A-NR: 209
DP slave
Control command
Ackn.
field
Anzw = job_active receive possible (...3 )
H
Fig. 11.39 Sequence of HDB Special Service A-NR: 209 for Global_Control
B8976060/02 Distributed I/Os (DP)
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