Siemens SINUMERIK 840D Description Of Functions page 216

4 Data Descriptions
4.1 Machine data
36901 $MA_SAFE_FUNCTION_ENABLE
MD number Enable safety-related functions
Default: 0
Change becomes effective after POWER ON:
Data type: DWORD
Meaning The functions for safe operation can be enabled for one axis/spindle with this data.
It is only possible to enable - on an axis-specific basis - as many axes/spindles for safe
operation as have been enabled by the global option.
If one of the bits from bit 1 is set, then bit 0 must also be set. This is because for a STOP
C, D, E the control switches into the safe operating stop. This condition is checked (if
there is an error, configuration Alarm 27033 is output).
The more partial functions that are set, then the more computing time the safe functions
require.
High byte Bit 15
Enable safe cams
SN4 -
Low byte Bit7
Enable (from SW4.2)
Cam
synchron
ization
Special cases, errors If bit 1 or a higher bit is set, then bit 0 must also be set since the control system switches
to a safe operational stop in response to STOP C, D or E (a configuration alarm is output
if an error is detected).
If an insufficient number of axes/spindles have been enabled for safe operation using the
global option, then this data may be overwritten with the value 0000 during run-up
Corresponds with ... Global option
References Refer to Chapter 2, "Enabling safety-related functions"
4-216
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
Min. input value: 0
Protection level (R/W) 7/2
Applies from SW 3.4
Bit 14 Bit 13 Bit 12
SN4 + SN3 - SN3 +
Bit6 Bit5 Bit4
SW 6.3
External Override Enable
STOPs for external
safely- ESR
reduced activatio
speed n
Max. input value:
FF 03, FF E3 (from SW4.2)
Unit: Hexadecimal
Bit 11 Bit 19 Bit 9
SN2 - SN2 + SN1 -
Bit 3 Bit 2 Bit 1
From Reserve Enable
SW 5.2 d
Enable 0 SE
act.
value
synchr.
2nd
encoder
system
© Siemens AG 2003 All Rights Reserved
11.03
840D
Bit 8
SN1 +
Bit 0
SBH/
SG