Siemens SIMATIC ET 200S Operating Instructions Manual page 5

3.8 Fast mode ..................................................................................................................................197
3.8.1 Overview ....................................................................................................................................197
3.8.2 Fast mode ..................................................................................................................................198
3.8.3 Gate function in the case of fast mode ......................................................................................198
3.8.4 Synchronization..........................................................................................................................199
3.8.5 Assignment of feedback interface for fast mode........................................................................201
3.8.6 Assigning parameters for fast mode ..........................................................................................203
3.9 Position feedback.......................................................................................................................204
3.9.1 Overview ....................................................................................................................................204
3.9.2 Position detection.......................................................................................................................206
3.9.3 Gate Functions for Position Detection .......................................................................................207
3.9.4 Latch Function ...........................................................................................................................210
3.9.5 Synchronization..........................................................................................................................213
3.9.6 Assignment of the Feedback and Control Interface for Position Feedback ..............................215
3.9.7 Assigning Parameters for Position Feedback............................................................................221
3.10 Evaluation of count and direction signal ....................................................................................222
3.11 Diagnostics.................................................................................................................................224
3.11.1 Diagnostics using the LED display ............................................................................................224
3.11.2 Error types..................................................................................................................................225
3.12 Behavior at CPU-Master-STOP .................................................................................................226
3.13 Technical Specifications ............................................................................................................228
4 1SSI....................................................................................................................................................... 231
4.1 Product Overview.......................................................................................................................231
4.2 Isochronous Mode .....................................................................................................................233
4.3 Example: Starting 1SSI..............................................................................................................234
4.4 Terminal Assignment Diagram...................................................................................................237
4.5 Configuring standard mode and fast mode................................................................................239
4.6 Functions of the 1SSI.................................................................................................................240
4.6.1 Overview of 1SSI functions........................................................................................................240
4.6.2 Encoder Value Detection ...........................................................................................................241
4.6.3 Gray/Binary Converter ...............................................................................................................242
4.6.4 Transmitted Encoder Value and Standardization ......................................................................242
4.6.5 Detection of Direction and Reversal of the Direction of Rotation ..............................................244
4.6.6 Comparator (Only in Standard Mode)........................................................................................245
4.6.7 Latch Function (Only in Standard Mode) ...................................................................................247
4.6.8 Error Detection in Standard Mode .............................................................................................249
4.6.9 Error Detection in Fast Mode .....................................................................................................249
4.7 Behavior at CPU/master STOP .................................................................................................250
4.8 Setting parameters for the 1SSI.................................................................................................251
4.9 Diagnostics.................................................................................................................................254
4.9.1 Diagnostics using the LED display ............................................................................................254
4.9.2 Error types..................................................................................................................................255
4.10 Control and Feedback Interfaces in Standard Mode .................................................................256
4.11 Feedback Interface in Fast Mode ..............................................................................................259
4.12 Technical Specifications ............................................................................................................261
Technological Functions
Operating Instructions, 06/2010, A5E00124867-07
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