Siemens Sinumerik 840D sl Function Manual page 241

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F- -CPU 1
F_SENDDP
(sender)
F- -CPU 2
F_RECVDP
(receiver)
Figure 7-22 Components of an F_DP communication relationship
F net data telegram
The F_SENDDP of the F--CPU1 (sender) cyclically generates an F net data tele-
gram and writes it to the output data area of the F--CPU. The F net data telegram
has the following structure that is compatible to SIMATIC:
S 6 bytes F net data
-- 2 bytes Bool
-- 2x2 bytes for 2 INT values
(Notice: is not evaluated for SINUMERIK 840D sl)
S 2 bytes status word
S 2 bytes sequence number
S 2 bytes CRC
As a result of the F_DP communication relationship -- configured in SIMATIC
Step7 -- the F net data telegram is transferred from the output area of the F--CPU1
into the input area of the F--CPU2.
© Siemens AG 2015 All Rights Reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
7.4 Safety- -related CPU- -CPU communication (F_DP communication)
I/O range
A address:
length: 12 bytes
I address: 288
length: 6 bytes
I/O range
A address:
Length: 6 bytes
I address: 298
Length: 12 bytes
Connecting Sensors/Actuators
288
298
Note
The I and O addresses used here are
examples only.
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