Siemens Sinumerik 840D sl Function Manual page 374

Data Description
8.1 Machine data for SINUMERIK 840D sl
13318
MD number
Default value 0H
Change becomes effective after: POWER ON
Data type: DWORD
Meaning:
corresponds with ...
Additional references
13319
MD number
Default value 0H
Change becomes effective after: POWER ON
Data type: DWORD
Meaning:
corresponds with ...
Additional references
13320
MD number
Default value 10
Change becomes effective after: POWER ON
Data type: DWORD
Meaning:
corresponds with ...
Additional references
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SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
$MN_SAFE_GLOB_ACT_CHECKSUM[0...3]
Actual checksum NCK
Min. input limit: 0H
Protection level: 7/- -
Display data:
The actual checksum - - calculated after POWER ON or a RESET - - over the actual values
of safety- -related machine data is entered here.
Assignment of the field indices:
Index 0: General safety parameterization, parameterization of the SPL I/O coupling
Index 1: SPL user data
Index 2: Enable I/O connection (PROFIsafe and F_SEND/F_RECV)
Index 3: PROFIsafe parameters from the S7 configuring
$MN_SAFE_GLOB_DES_CHECKSUM[0...3]
Reference checksum
Min. input limit: 0H
Protection level: 7/1
This machine data contains the reference checksum over the actual values of safety- -
related machine data that was saved during the last machine acceptance test.
Assignment of the field indices:
Index 0: General safety parameterization, parameterization of the SPL I/O coupling
Index 1: SPL user data
Index 2: Enable I/O connection (PROFIsafe and F_SEND/F_RECV)
Index 3: PROFIsafe parameters from the S7 configuring
$MN_SAFE_SRDP_IPO_TIME_RATIO
Factor F_DP communication clock cycle
Min. input limit: 1
Protection level: 7/2
Ratio between the interpolator clock cycle and the F_DP clock cycle in which F_DP
communication takes place. In the resulting time grid, OB40 on the PLC side is initiated
from the NCK to enable F_DP communication.
The value obtained for the communication clock cycle from this MD and the set IPO clock
cycle may not be greater than 250 ms.
Max. input limit: FFFFFFFFH
Unit: - -
Max. input limit: FFFFFFFFH
Unit: - -
Max. input limit: 65535
Unit: - -
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