Siemens SINUMERIK 840D sl Function Manual page 386

Data descriptions
9.1 Machine data for SINUMERIK 840D sl
36997
MD number
Default value: 0
Change becomes effective after: POWER ON
Data type: DWORD
Meaning:
Special cases, errors,...
36998
MD number
Default value: 0H
Change becomes effective after: POWER ON
Data type: DWORD
Meaning:
36999
MD number
Default value: 0H
Change becomes effective after: POWER ON
Data type: DWORD
Meaning:
37000
MD number
Default value: 0
Change becomes effective after: POWER ON
386
$MA_SAFE_ACKN
User agreement
Min. input limit: -
The status of the user agreement is displayed in this machine data.
The user can confirm or cancel his "user agreement" using an appropriate screen.
If it is internally detected in the software that the reference to the machine has been lost, then
it is automatically cancelled (e.g. when changing over gear ratios or when referencing, the
plausibility check when comparing with the saved stop position fails).
Any manual changes to the MD are detected the next time that the control is powered-up
(plausibility check). A new user agreement is required after referencing.
$MA_SAFE_ACT_CHECKSUM[0,1,2]
Actual checksum
Min. input limit: 0H
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: axis-specific monitoring functions
Index 1: HW component IDs
Index 2: Drive assignment
$MA_SAFE_DES_CHECKSUM[0,1,2]
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: axis-specific monitoring functions
Index 1: HW component IDs
Index 2: Drive assignment
$MA_FIXED_STOP_MODE
Travel to fixed stop mode
Min. input limit: 0
Protection level: 7/2
Protection level: 7/0
Protection level: 7/1
Protection level: 7/2
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Max. input limit: -
Unit: -
Max. input limit: FFFFFFFFF
Unit: -
Max. input limit: FFFFFFFF
Unit: -
Max. input limit: 3
Unit: -
Safety Integrated