Siemens SINUMERIK 840D Description Of Functions page 56

3 Safety-Related Functions
3.1 Basic mechanisms of SI functions
3.10 Safe programable logic (SPL) (840D SW 4.4.18)...................................... 3-136
3.10.1 NCK-SPL program................................................................................ 3-139
3.10.2 Starting the NCK-SPL using the PROG_EVENT mechanism
(from SW 6.4.15) .................................................................................. 3-141
3.10.3 Starting the NCK-SPL from the PLC user program............................... 3-144
3.10.4 Linking the NCK-SPL to the I/O and monitoring channel ...................... 3-145
3.10.5 Diagnostics/commissioning .................................................................. 3-147
3.10.6 Safe software relay (from SW 6.3.30) ................................................... 3-148
3.10.7 System variables for SINUMERIK 840D ............................................... 3-153
3.10.8 Behavior after POWER ON/operating mode change/reset ................... 3-155
3.10.9 SPL data on the PLC side .................................................................... 3-156
3.10.10 Direct communications between the NCK and PLC-SPL
(from SW 6.3.30) .................................................................................. 3-158
3.10.11 PLC data block (DB 18) ........................................................................ 3-160
3.10.12 Forced checking procedure of SPL signals........................................... 3-164
3.11 Encoder mounting arrangements.............................................................. 3-168
3.11.1 Encoder types....................................................................................... 3-168
3.11.2 Adjustment, calibration, axis states and historical data......................... 3-170
3.11.3 Overview of the data for mounting encoders ........................................ 3-174
3.11.4 Actual value synchronization (slip for 2-encoder systems
with SW 5.2 and higher) ....................................................................... 3-175
3.11.5 Application: Spindle with two encoders and drive with slip
(SW 5.2 and lower)............................................................................... 3-176
3.12 SI I/Os using fail-safe modules connected to PROFIBUS DP
(840D from SW 6.3.30) ............................................................................. 3-179
3.12.1 Description of functions ........................................................................ 3-179
3.12.2 Available fail-safe modules ................................................................... 3-180
3.12.3 System prerequisites ............................................................................ 3-181
3.12.4 System structure................................................................................... 3-182
3.12.5 Configuring and parameterizing the ET 200S F-I/O .............................. 3-183
3.12.6 Parameterizing SINUMERIK 840D NCK............................................... 3-188
3.12.7 Parameterizing the SINUMERIK 840D PLC ......................................... 3-195
3.12.8 Response times.................................................................................... 3-196
3.12.9 Functional limitations ............................................................................ 3-196
3.13 Behavior of Safety Integrated when the drive bus fails (from SW 6.4.15) . 3-198
3.13.1 Behavior of the axial NCK monitoring channel...................................... 3-198
3.13.2 Behavior without NCK-SPL................................................................... 3-199
3.13.3 Behavior with NCK-SPL........................................................................ 3-199
3.13.4 Behavior of the drive monitoring channel.............................................. 3-200
3.13.5 SGE/SGA processing in the PLC.......................................................... 3-201
3.13.6 Limitations ............................................................................................ 3-201
3.13.7 Examples.............................................................................................. 3-201
3-56
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
© Siemens AG 2003 All Rights Reserved
11.03