Siemens simatic et 200s Operating Instructions Manual page 10

Table of contents
Figures
Figure 2-1 Terminal Assignment for the Example ........................................................................................ 17
Figure 2-2 Design of a Positioning System with a Stepping Motor (Example)............................................. 23
Figure 2-3 Traversal Curve of the 1STEP 5V/204kHz ................................................................................. 26
Figure 2-4 Torque Characteristic Curve of a Stepping Motor ...................................................................... 27
Figure 2-5 Search for Reference, Start before REF..................................................................................... 33
Figure 2-6 Search for Reference, Start after REF........................................................................................ 34
Figure 2-7 Search for Reference, Start at REF ............................................................................................ 34
Figure 2-8 Start at the Limit Switch in Start Direction................................................................................... 34
Figure 2-9 Defective Reference Cam, Start before REF.............................................................................. 35
Figure 2-10 Defective Reference Cam, start at LIMIT_P ............................................................................... 35
Figure 2-11 Starting the Positioning Job ........................................................................................................ 48
Figure 2-12 Carrying Out a Parameter Change ............................................................................................. 49
Figure 2-13 Error Acknowledgment................................................................................................................ 50
Figure 3-1 Relay contact in the output circuit ............................................................................................... 60
Figure 3-2 Design of a Positioning Control System (Example) .................................................................... 61
Figure 3-3 Switching points and switching differences................................................................................. 62
Figure 3-4 How the 1PosInc/Digital Works................................................................................................... 64
Figure 3-5 Control and Feedback Signals with MODEs............................................................................... 65
Figure 3-6 Control and Feedback Signals with JOBs................................................................................... 66
Figure 3-7 Digital Outputs with Control Mode 0 ........................................................................................... 67
Figure 3-8 Digital Outputs with Control Mode 1 ........................................................................................... 68
Figure 3-9 Sequence of Execution of the Search for Reference.................................................................. 72
Figure 3-10 Search for Reference Point Run with Reducing Cam and Zero Mark ........................................ 74
Figure 3-11 Reference Point Run with Minus Limit Switch ............................................................................ 75
Figure 3-12 Reference Point Run with Reversal of Direction at the Plus Limit Switch .................................. 76
Figure 3-13 Reference Point Run Only with Zero Mark ................................................................................. 76
Figure 3-14 Execution of Inching.................................................................................................................... 78
Figure 3-15 Execution of Absolute Positioning............................................................................................... 81
Figure 3-16 Execution of Relative Positioning................................................................................................ 84
Figure 4-1 Relay contact in the output circuit ............................................................................................. 121
Figure 4-2 Design of a Positioning Control System (Example) .................................................................. 122
Figure 4-3 Switching points and switching differences............................................................................... 123
Figure 4-4 How the 1PosInc/Analog Works ............................................................................................... 126
Figure 4-5 Control and Feedback Signals with MODEs............................................................................. 127
Figure 4-6 Control and Feedback Signals with JOBs................................................................................. 128
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Operating Instructions, 05/2007, A5E00124871-04
ET 200S Positioning