Siemens Sinumerik 840D sl Function Manual page 252

Connecting Sensors/Actuators
7.4 Safety- -related CPU- -CPU communication (F_DP communication)
S |(aaa -- bbb)| = y
With y = number of F net data signals selected in the MD F net data filter
$MN_SAFE_SDP_FILTER.
In the case of an error, Alarm 27303 "F_DP: Number of signals in MD %1[%2]
< > MD %3[%4]" is output.
Example for NCK parameterization (see Page 7-249)
The selected SPL outputs $A_OUTSE[1...4] and $A_OUTSE[33...36] are trans-
ferred in the F net data corresponding to the F net data filter of the particular SPL
connection, refer to Fig. 7-27 "F net data transfer F_SENDDP".
MD13337 $MN_SAFE_SDP_FILTER:
F net data filter
The F net data filter allows the SPL outputs ($A_OUTSE), which are to be trans-
ferred, to be distributed across any F net data signals.
The F net data filter is set using MD $MN_SAFE_SDP_FILTER[0...m].
Example for NCK parameterization (see Page 7-249)
The parameterized SPL outputs of the F_DP communication relationship
(DP_DP_ID: 2000) are distributed via the F net data filter to bits 0, 4, 8 and 12
(1st sub--slot) and bits 3, 7, 11 and 15 (2nd sub--slot) in the F net data of the F
telegram, see Fig. 7-27 "F net data transfer F_SENDDP".
Note
Within an SPL connection, an F net data signal of an F telegram may only be
occupied by one SPL coupling via the F net data filter. When allocated a multiple
number of times, Alarm 27302 "F_DP: Dual allocation MD %1 [%2] --MD %3 [%4]"
is output.
MD13335 $MN_SAFE_SDP_TIMEOUT
Monitoring time
By specifying the monitoring time, the time is specified within which an F telegram
from F_SENDDP must be acknowledged by F_RECVDP.
The monitoring time is set using MD $MN_SAFE_SDP_TIMEOUT[0...m].
When the monitoring time is exceeded, then depending on the system variables
$A_FSDP_ERR_REAC, the selected alarm responses are initiated:
Alarm 27350 "F_DP: %1 communication, DP_DP_ID = 52 signals error %3" and
Alarm 27351 "F_DP: %1 communication, DP_DP_ID = 52 signals error %3".
7-252
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
© Siemens AG 2015 All Rights Reserved
10/15