Nck--Spl Program - Siemens Sinumerik 840D sl Function Manual

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7.5.4 NCK- - SPL program
Description
The NCK--SPL program is written as an NC program (ASUB) with synchronized
actions.
Features
The NCK--SPL program has the following features:
S The program can be started manually with NC START during commissioning.
S The following applies once the program has been started:
-- The synchronous actions assigned an ID No. are cyclically executed in the
IPO clock cycles (modal)
-- The synchronous actions assigned the keyword IDS remain active even
after the operating mode has been changed or NC--STOP/NC RESET
-- In order to check the program, the status of the active synchronous actions
(operating area "Machine", soft key "Synchronous actions") can be dis-
played.
-- The program can be modified during commissioning. It must then be re--
started.
-- The NCK--SPL program is saved in the NCK path_N_CST_DIR as sub--
routine "_N_SAFE_SPF" (HMI view: Standard cycles / SAFE.SPF).
Other sub--routine names are not permitted.
S The images of the PLC safety variables ($A_INSIP(D), $A_OUTSIP(D), $A_IN-
SEP(D), $A_OUTSEP(D), $A_MARKERSIP(D)) are required for the simulation
(on the NC side) of an SPL. These can be used to develop the SPL step--by--
step. They can only be read by the NCK.
Protective mechanisms
S The synchronized action IDs used for the NCK--SPL are protected from being
influenced by the PLC or other programs using MD $MN_PREVENT_SYN-
ACT_LOCK. To activate the protection, the number range of the synchronized
action IDs used in the SPL program must be entered into the two fields of
machine data $MN_PREVENT_SYNACT_LOCK. It is then no longer possible
to change these synchronized actions (CANCEL, LOCK have no effect) once
_N_SAFE_SPF has been started.
© Siemens AG 2015 All Rights Reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
Connecting Sensors/Actuators
7.5 Safe programmable logic (SPL)
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