Siemens SINUMERIK 840D Description Of Functions page 232

4 Data Descriptions
4.1 Machine data
36976 $MA_SAFE_PULSE_STATUS_INPUT
MD number Input assignment "pulses cancelled" status
Default: 0
Change becomes effective after POWER ON:
Data type: DWORD
Meaning This data defines the input for reading back the "pulses cancelled" status signal.
Structure: Refer to coding of input assignment
Signal
= 0
= 1
Special cases, errors If MD bit 31 is set, then the signal is processed inverted (ss = 81)
References MD 36970: $MA_SAFE_SVSS_DISABLE_INPUT
36977 $MA_SAFE_EXT_STOP_INPUT[n]: 0...2
MD number Input assignment, external brake request
Default: 0,0,0,0
Change becomes effective after POWER ON:
Data type: DWORD
Meaning Assigns the input terminal for the external brake requests
Assigns the terminal level to stop types ("0" active):
Index 0: Assignment for "de-selection ext. STOP A" (SH, pulse cancellation)
Index 1: Assignment for "de-selection ext. STOP C" (braking along the current limit)
Index 2: Assignment for "de-selection ext. STOP D" (braking along the path)
Index 3: Assignment for "de-selection ext. STOP E" (ESR+braking along the path)
For safety reasons, inverted logic is used for these signals.
Corresponds with ... MD 36970: $MA_SAFE_SVSS_DISABLE_INPUT
References Refer to Chapter 3, "External STOPs"
36978 $MA_SAFE_OVR_INPUT[n]: 0...3
MD number Input assignment, SG override selection
Default: 0
Change becomes effective after POWER ON:
Data type: DWORD
Meaning Assignment of NCK inputs for override of the limit value of safely-reduced speeds 2 and 4.
Structure: Refer to coding of input assignment
n = 3, 2, 1, 0 stand for override selection bits 3, 2, 1, 0
Assignment of input bits to SG override values:
Bit 3
0
0
to
1
The override factor itself (percentage) is defined using the following machine data:
For 840D MD 36932: $MA_SAFE_VELO_OVR_FACTOR[n]
For 611 digital
Special cases, errors The "override for safely-reduced speed" function is enabled via MD 36901 (MD 1301):
$MA($MD)_SAFE_FUNCTION_ENABLE
If the MD bits 31 are set, then the signal is processed inverted (ss = 81).
Corresponds with ... MD 36970: $MA_SAFE_SVSS_DISABLE_INPUT
MD 36932: $MA_SAFE_VELO_OVR_FACTOR[n]
References Refer to Chapter 3, "override for safely-reduced speed"
4-232
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
means
Pulses are enabled
Pulses are cancelled
Min. input value: 0
Protection level (R/W) 2/7
Applies from SW 4.4.18
Min. input value: 0
Protection level (R/W) 7/2
Applies from SW 4.2
Bit 2 Bit 1 Bit 0
0 0 0
0 0 1
1 1 1
MD 1332: $MD_SAFE_VELO_OVR_FACTOR[n]
Max. input value: -
Unit: -
Max. input value: 0x811E0810
Unit: -
Max. input value: -
Unit: -
Override 0 is selected
Override 1 is selected
Override 15 is selected
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11.03
840D
840D
840D