Starting The Spl - Siemens SINUMERIK 840D sl Function Manual

Connecting Sensors/Actuators
7.3 Safe programmable logic (SPL)
Caution
!
The protective mechanisms that prevent changes to the NCK-SPL file and the
NCK-SPL instructions (statements) are only effective if
MD $MN_PREVENT_SYnACT_LOCK[0,1] is not equal to 0.
The machine construction OEM must ensure that the protective mechanisms are
activated no later than after the completion of the acceptance test and the values,
set in MD $MN_PREVENT_SYNACT_LOCK[0,1] are documented in the
acceptance report.
After commissioning has been completed, the access rights to the SAFE.SPF file
must be set to the correct access level for writing/reading/deleting access
operations (manufacturer or service).
As long as the protective mechanisms for the NCK-SPL have not been activated
(MN_PREVENT_SYNACT_LOCK[0.1] equal to 0), Alarm 27095 is displayed when
the crosswise data comparison between the NCK and the PLC starts. This alarm
can be acknowledged with the NCK key so that the SPL can be commissioned.
Note
The SPL program must be addressed using upper case letters. Alarm 27097 is
output if this is not observed.
7.3.3

Starting the SPL

The NCK-SPL is active after the control has booted, if at least
1. The functions SBH/SG and "external STOPs" have been enabled for at least
one axis using $MA_/$MD_SAFE_FUNCTION_ENABLE,
2. One of the NCK-SPL interfaces is used.
This means that an axial SGE/SGA was parameterized at one of the SPL inter-
faces using its assignment MD.
In this case, the "external STOP A" must be parameterized at the SPL interface for
all of the axes that use safety integrated.
In addition, the following machine data must be set for an error-free ASUB start
after the NCK and the PLC have booted:
3. $MN_ASUP_START_MASK=7:
ASUB can be started in all operating states of the NC (RESET/JOG/not all axes
referenced/read-in active).
4. $MN_ASUP_START_PRIO_LEVEL=1:
Interrupt priority, from which MD $MN_ASUP_START_MASK becomes active.
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SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 03.2006 Edition
© Siemens AG, 2006. All rights reserved
03.06