Siemens Sinumerik 840D sl Function Manual page 395

10/15
36929
MD number
Default value: 0
Change becomes effective after: POWER ON
Data type: DWORD
Meaning:
corresponds with ...
36930
MD number
Default value: 1.0
Change becomes effective after: POWER ON
Data type: DOUBLE
Meaning:
corresponds with ...
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SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
$MA_SAFE_ENC_CONF
Configuration of the redundant actual value
Min. input limit: 0
Protection level: 7/- -
Configuration of the redundant actual value:
Bit 0: Up- -down counter
= 0: Down counter
= 1: Up counter
Bit 1: Encoder CRC: Processing the redundant coarse position
= 0: most significant byte first
= 1: least significant byte first
Bit 2: Redundant coarse position MSB/LSB justified
= 0: Redundant coarse position LSB justified
= 1: Redundant coarse position MSB justified
Bit 4: Binary comparison not possible
= 0: Binary comparison possible
= 1: Binary comparison not possible
When booting - - for DRIVE- -CLiQ encoders - - this information is read- -out of drive parameter
r0474 (the default values apply for SMI/SMC/SME encoders) and is then compared with the
last value saved here. This MD is then overwritten. Alarm 27035 is output if they are not
equal. The value of this MD is incorporated in the calculation of MD36998
$MA_SAFE_ACT_CHECKSUM[1].
If, in drive parameter r0474 an unknown bit is set, then Alarm 27038 is output. The alarm
output in this position can be hidden using the MD $MN_SAFE_DIAGNOSIS_MASK, bit 3
= 1.
$MA_SAFE_STANDSTILL_TOL
Standstill tolerance
Min. input limit: 0.0
Protection level: 7/2
This MD specifies the tolerance for a safe operating stop.
If the difference between the position limit value and position actual value is greater than
the tolerance set here when a safe operating stop is selected, then the control system out-
puts Alarm 27010 with STOP B.
The position limit value is the position actual value at the instant that a safe operating stop
is selected.
MD36956 $MA_SAFE_PULSE_DISABLE_DELAY
8.1 Machine data for SINUMERIK 840D sl
Max. input limit: 7FFFFFFFH
Max. input limit: 100.
Data Description
Unit: - -
Unit: mm/inch, degrees
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