Siemens SINUMERIK 840D sl Function Manual page 287

05.08
36938
MD number
Default value:
100, 101, ... , 114; 200, 201, ..., 214
Change becomes effective after: Power On
Data type: DWORD
Significance:
corresponds with ...
Additional references
36940
MD number
Default value: 0.1
Change becomes effective after: POWER ON
Data type: DOUBLE
Significance:
Special cases, errors,...
Additional references
© Siemens AG 2008 All Rights Reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 05.2008 Edition
$MA_SAFE_CAM_TRACK_ASSIGN[n]: 0 ... 29
Cam track assignment
Min. input limit: 100
Protection level: 7/2
Assigns the individual cams to a maximum of 4 cam tracks including defining the numerical
value for the SGA "cam range".
The "hundreds" position defines which cam track is assigned to the cams. Valid values are
1, 2 or 3 or 4.
The "tens" and "ones" positions contain the numerical value that should be signaled to the
safe logic as SGA "cam range" and processed there. Valid values are 0 to 14, whereby
each numerical value may only be used once for each cam.
Therefore the valid value range of this machine data is:
100...114, 200...214, 300...314, 400...414
Examples:
MD 36938[0] = 207: Cam 1 (index 0) is assigned to cam track 2. If the position is in the
range of this cam, then 7 is entered in the SGA "cam range" of the 2nd cam track.
MD 36938[5] = 100: Cam 6 (index 5) is assigned to cam track 1. If the position is in the
range of this cam, then 0 is entered in the SGA "cam range" of the 1st cam track.
MD 37903: $MA_SAFE_CAM_ENABLE
MD 36936: $MA_SAFE_CAM_POS_PLUS[n]
MD 36937: $MA_SAFE_CAM_POS_MINUS[n]
MD 37900: $MA_SAFE_CAM_TRACK_OUTPUT[n]
MD 37901/37902/37903/37904: $MA_SAFE_CAM_RANGE_OUTPUT_1/2/3/4[n]
MD 37906/37907/37908/37909: $MA_SAFE_CAM_RANGE_BIN_OUTPUT_1/2/3/4[m]
/FBSI/ see Chapter 6.8: "Safe software cams, safe cam track (SN)"
$MA_SAFE_CAM_TOL
Tolerance for safe cams
Min. input limit: 0.001
Protection level: 7/2
Due to the different mounting locations of the encoders and variations in clock cycle and
signal transit (propagation times), the cam signals of the two monitoring channels never
switch at precisely the same position and never simultaneously.
This data specifies the tolerances for all cams as a load–side distance. The monitoring
channels may have different signal states for the same cam within this tolerance bandwidth
without generating Alarm 27001.
Recommendation:
Enter an identical or slightly higher value than that set in MD 36942.
/FBSI/ see Chapter 6.8: "Safe software cams, safe cam track (SN)"
8.1 Machine data for SINUMERIK 840D sl
Max. input limit: 414
Max. input limit: 10
Data Description
Unit: –
Unit: mm, degrees
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