Siemens SINUMERIK 840D

7 Configuring example 11.03
7.3 Safety Integrated with SPL
© Siemens AG 2003 All Rights Reserved
7-368 SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
Correspondingly, if NCK-SGE is permanently de-selected by the axis-specific
machine data (80000000H), the PLC-SGE must also be pre-assigned or
directly supplied from the PLC when the system runs-up.
Example: SBH is permanently de-selected  safely-reduced speed is active
1. Drive:
36971 SAFE_SS_DISABLE_INPUT 80000000H
  set DB31.DBX22.1 to "1" when the system starts-up (OB100) – not with
the PLC-SPL.
7.3.2 Starting the NCK-SPL and PLC-SPL
ABLAUF01.DSF
Switch on/Start up
control:OB100: M210.0="1"
PLC waiting for checkback
drive group is in cyclic
operation
Scan DB10.DBX108.5 -
Drive in cyclic operation
Drive in
cyclic operation
ASUB not running
OB1: Loop
when M210.0="1"
PLC starts NCK-SPL via
FB4 and FC9
PLC-SPL is not activated
until ASUB checkback
successfully started
ASUB started
FC 95: M210.0="0"
PLC-SPL (FC96) NCK-SPL
ASUB started
Drive not
in cyclic
operation
Fig. 7-4 Flowchart
In order to ensure that the crosswise data comparison function does not
respond, the NCK-SPL and the PLC-SPL must be started almost at the same
time. The PLC program is exclusively responsible in activating the individual
SPL programs. The following program excerpt shows how the PLC-SPL and
the NCK-SPL can be started almost simultaneously.
Description