Siemens SINUMERIK 840D sl Function Manual page 339

13319
MD number
Default value 0H
Change becomes effective after: POWER ON
Data type: DWORD
Meaning:
corresponds with ...
Additional reference
13320
MD number
Default value 10
Change becomes effective after: POWER ON
Data type: DWORD
Meaning:
corresponds with ...
Additional reference
13322
MD number
Default value 0.0
Change becomes effective after: POWER ON
Data type: DOUBLE
Meaning:
corresponds with ...
Additional reference
Safety Integrated
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
$MN_SAFE_GLOB_DES_CHECKSUM[0...3]
Reference checksum
Min. input limit: 0H
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
Ratio between the interpolator clock cycle and the F_DP clock cycle in which F_DP commu‐
nication 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.
$MN_INFO_SAFE_SRDP_CYCLE_TIME
Maximum F_DP communication clock cycle
Min. input limit: -
Display data:
Displays the maximum time grid in which F_DP communication takes place for plant/system
coupling, which is operated via the OB40 on the PLC.
The value is obtained from the interpolator clock cycle and MD13320
$MN_SAFE_SRDP_IPO_TIME_RATIO.
When the set communication clock cycle is exceeded, this is also displayed here.
In the case of an incorrect parameterization (communication clock cycle exceeds the maxi‐
mum value of 250.0 ms) then the maximum value that can be set is displayed.
9.1 Machine data for SINUMERIK 840D sl
Protection level: 7/1
Protection level: 7/2
Protection level: 7/0
Data descriptions
Max. input limit: FFFFFFFFH
Unit: -
Max. input limit: 65535
Unit: -
Max. input limit: -
Unit: s
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