Siemens SINUMERIK 840D Description Of Functions page 378

7 Configuring example
7.3 Safety Integrated with SPL
$A_MARKERSIP In order to be able to save intermediate states in the SPL logic, markers are
PLC defined. These markers must be supplied on the DB18 in accordance with their
use in the NCK-SPL.
SPL markers
DB18.DBX70.0 ...DB18.DBX73.7 :
DB18.DBX74.0 ...DB18.DBX77.7 :
Configuration example: Assignment as shown in the table
TIMER The individual timers can be freely selected in the PLC – there are no
PLC associated DB18 signals in the NCK system variables $A_TIMERSI[n].
Configuration example: Assignment as shown in the table
Symbolic For the PLC-SPL, the name "SPL" or also a variable type (UDT18) can be
assigned to DB18 in the symbol table. A sample module for the UTD18, that
defines the DB18 signals can be obtained on request from the hotline (cf.
Chapter 2.9). The symbolic variable names can then be adapted in this UDT18
and can be adapted to match the user program.
Excerpt from symbol
editor
PLC symbol table
Symbol
SPL
7-378
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
Note
The individual timers (NCK: $A_TIMERSI; PLC: freely selectable) are not
listed at his point (refer to Chapter 7.3.10 "SPL programs") because they are
not included in the crosswise data and result comparison.
Address
DB18
$A_MARKERSIP[1..32]
$A_MARKERSIP[33..64]
Data type Comment
UDT18 Interface SPL data area
© Siemens AG 2003 All Rights Reserved
11.03