Siemens SINUMERIK 840D sl Function Manual page 8

Table of contents
2.5.3 Signals...................................................................................................................................74
2.5.3.1 Signals to NC.........................................................................................................................74
2.5.3.2 Signals from NC.....................................................................................................................74
2.5.3.3 Signals to operator panel front...............................................................................................75
2.5.3.4 Signals from operator panel front...........................................................................................75
2.5.3.5 Signals to channel..................................................................................................................76
2.5.3.6 Signals from channel..............................................................................................................76
2.5.3.7 Signals to axis/spindle............................................................................................................76
2.5.3.8 Signals from axis/spindle.......................................................................................................76
3 A3: Axis Monitoring, Protection Zones.......................................................................................................79
3.1 Brief description.....................................................................................................................79
3.1.1 Axis monitoring functions.......................................................................................................79
3.1.2 Protection zones....................................................................................................................79
3.2 Axis monitoring functions.......................................................................................................80
3.2.1 Contour monitoring.................................................................................................................80
3.2.1.1 Contour error..........................................................................................................................80
3.2.1.2 Following-error monitoring.....................................................................................................80
3.2.2 Positioning, zero speed and clamping monitoring..................................................................83
3.2.2.1 Correlation between positioning, zero-speed and clamping monitoring.................................83
3.2.2.2 Positioning monitoring............................................................................................................83
3.2.2.3 Zero-speed monitoring...........................................................................................................84
3.2.2.4 Parameter set-dependent exact stop and standstill tolerance...............................................85
3.2.2.5 Clamping monitoring..............................................................................................................86
3.2.3 Speed-setpoint monitoring.....................................................................................................93
3.2.4 Actual-velocity monitoring......................................................................................................94
3.2.5 Measuring system monitoring................................................................................................95
3.2.5.1 Encoder-limit-frequency monitoring.......................................................................................97
3.2.5.2 Plausibility check for absolute encoders................................................................................98
3.2.5.3 Customized error reactions..................................................................................................100
3.2.6 Limit-switch monitoring.........................................................................................................103
3.2.6.1 Hardware limit switch...........................................................................................................103
3.2.6.2 Software limit switch.............................................................................................................104
3.2.7 Monitoring of the working area limitation..............................................................................106
3.2.7.1 General................................................................................................................................106
3.2.7.2 Working area limitation in BKS.............................................................................................108
3.2.7.3 Working area limitation in WCS/SZS...................................................................................110
3.2.8 Parking a machine axis........................................................................................................113
3.2.9 Parking the passive position measuring system..................................................................115
3.2.9.1 Function...............................................................................................................................115
3.2.9.2 Supplementary conditions....................................................................................................118
3.2.9.3 Example: Changing an attachment head for a direct position measuring system...............119
3.2.9.4 Example: Changing an attachment head for two direct position measuring systems..........123
3.2.9.5 Example: Measuring system switchover when encoders are missing in certain parts of
the range..............................................................................................................................127
3.3 Protection zones..................................................................................................................130
3.3.1 General................................................................................................................................130
3.3.2 Types of protection zone......................................................................................................132
3.3.3 Definition via part program instruction..................................................................................135
3.3.4 Definition as per system variable.........................................................................................138
3.3.5 Activating and deactivating protection zones.......................................................................140
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Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions