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Siemens SINUMERIK 840Di Function Manual page 1437

Basic machine
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Contents
1
Brief Description ..................................................................................................................................... 1-1
1.1
Brief description ......................................................................................................................... 1-1
2
Detailed Description................................................................................................................................ 2-1
2.1
Axis-specific referencing ............................................................................................................ 2-1
2.2
Channel-specific referencing ..................................................................................................... 2-3
2.3
Reference point approach from part program (G74) ................................................................. 2-5
2.4
Referencing with incremental measurement systems ............................................................... 2-6
2.4.1
Chronological sequence ............................................................................................................ 2-6
2.4.2
Phase 1: Traversing to the reference cam................................................................................. 2-7
2.4.3
Phase 2: Synchronization with the zero mark.......................................................................... 2-10
2.4.4
Phase 3: Traversing to the reference point.............................................................................. 2-16
2.4.5
Buffered actual value ............................................................................................................... 2-19
2.5
Referencing with distance-coded reference marks.................................................................. 2-21
2.5.1
General overview ..................................................................................................................... 2-21
2.5.2
Basic parameter assignment ................................................................................................... 2-21
2.5.3
Chronological sequence .......................................................................................................... 2-24
2.5.4
Phase 1: Reference mark search ............................................................................................ 2-25
2.5.5
Phase 2: Travel to fixed stop ................................................................................................... 2-27
2.6
Referencing with absolute value encoders .............................................................................. 2-29
2.6.1
Information about calibration.................................................................................................... 2-29
2.6.2
Calibration by entering a reference point offset ....................................................................... 2-31
2.6.3
Adjustment by entering a reference point value ...................................................................... 2-32
2.6.4
Automatic calibration with probe .............................................................................................. 2-34
2.6.5
Calibration with BERO ............................................................................................................. 2-36
2.6.6
Reference point approach with absolute encoders ................................................................. 2-37
2.6.7
Automatic encoder replacement detection .............................................................................. 2-38
2.6.8
Enabling the measurement system ......................................................................................... 2-40
2.6.9
Referencing variants that are not supported............................................................................ 2-41
2.7
Referencing by means of actual value adjustment .................................................................. 2-41
2.7.1
Actual value adjustment to the referencing measurement system .......................................... 2-41
2.7.2
Actual value adjustment to the referenced measurement system........................................... 2-42
2.7.3
Actual value adjustment for measuring systems with distance-coded reference marks ......... 2-43
2.8
Referencing in follow-up mode ................................................................................................ 2-44
2.9
Zero mark selection with BERO............................................................................................... 2-47
3
Supplementary Conditions...................................................................................................................... 3-1
3.1
Large traverse range.................................................................................................................. 3-1
4
Examples................................................................................................................................................ 4-1
4.1
Examples ................................................................................................................................... 4-1
Reference Point Approach (R1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
iii

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