Nematron Pointe Controller Manual de usuario Pagina 94
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Chapter 4: System Design and Installation Pointe Controller User Guide
92
In order to use single ended inputs, the ground connection must be very good.
The measurement devices must also be capable of being referenced to a common
ground.
Differential Inputs
There are cases when the individual analog inputs cannot be connected to a
common ground. In those cases, a differential input A/D converter should be
used.
With a differential analog input, both a positive and negative signal line must be
connected for each signal. The analog input module then measures the difference
between the positive and negative. The effect of one channel’s signal on another
channel’s signal should be as little as possible. That relationship of the effect on
the measured value of one channel to the value input on a second channel is
called “common mode.” The higher the “common mode rejection ratio (CMRR)”
the better.
- Pointe Controller 1
- User Guide 1
- 1.2 Typical Applications 19
- 1.3 Architecture Options 20
- 1.3.3 Network Node 21
- Chapter 2: Initial Setup 24
- Chapter 3: Quickstart Project 34
- 3.1 Starting a New Project 35
- 3.2.1 Defining input bits 36
- 3.2.2 Defining output bits 38
- 3.2.3 Defining memory tags 39
- 3.6 Assigning Outputs 50
- 3.7 Adding a Time Delay 55
- 3.12 Setting Breakpoints 68
- 4.1 Safety Guidelines 73
- Orderly System Shutdown 74
- System Power Disconnect 74
- Physical (Base Unit) 76
- Environmental 76
- Electrical 76
- Communications, Ethernet 77
- Communications, Serial 77
- 4.5.1 IP Address 80
- 4.5.2 Modbus Address 84
- 4.6.1 Digital Inputs 86
- AC Inputs 87
- Digital Input Voltage 88
- I/O “Common” Terminals 88
- 4.6.2 Digital Outputs 89
- Transistor Outputs 90
- 4.6.3 Analog Inputs 91
- Resolution 92
- Accuracy 93
- Multiplexing 93
- Single Ended Inputs 93
- Differential Inputs 94
- 4.7.1 Available I/O Modules 95
- 4.8.1 Slot Numbering 98
- 4.8.2 Installing Modules 99
- 4.11.2 Cable Connectors 105
- 4.11.3 10Base-T Connections 106
- 4.11.5 Crossover Patch Cable 106
- 5.1.3 The Scan Cycle 109
- Framework Editor Tools 110
- 5.2.3 The Object Editor pane 112
- 5.2.4 The Messages pane 112
- New Project 113
- Open Project 113
- Import Project 113
- Export Project 114
- 5.4.1 Java reserved words 115
- Diagnostics Metadata 118
- Database File Format 120
- Importing a Database 122
- Exporting a Database 122
- MODULE GO TO… 130
- OL3440 Display Panel Page 291 130
- Multiple Flow Charts 131
- Program and Subcharts 131
- Flow Chart Blocks 132
- Saving a Flow Chart 133
- Deleting a Flow Chart 133
- Flow Chart Workspace 134
- Special View Pane 134
- The Flow Chart toolbar 136
- Block Properties 137
- Expression Syntax 141
- Calling Subcharts 142
- Other Build Dialogs 143
- Moving a selected block 146
- Copying a selected block 146
- Resizing a selected block 146
- Deleting a selected block 147
- A Note on Arguments 152
- Calling the Subchart 152
- 5.7.1 Process Block 153
- Process Block Example 155
- 5.7.2 Terminator Block 156
- Return/Exit Block Properties: 157
- Condition Block Example 159
- 5.7.5 While/Do Loop Block 161
- While/Do Loop Block Example 162
- 5.7.6 Subchart Block 163
- Subchart Example 164
- The Ladder Diagram toolbar 167
- Deleting elements 171
- Program Properties 171
- Rung Properties 171
- Block Captions 171
- 5.9.1 Relays and Coils 173
- 5.9.3 Math Blocks 174
- 5.9.4 Comparison Blocks 175
- 5.9.6 Selection Blocks 176
- 5.9.7 String Blocks 177
- 5.9.8 Flow Control Blocks 178
- 5.9.9 Miscellaneous Blocks 178
- 6.3.1 Unloading a project 189
- 6.4.1 Stopping a project 190
- 6.5.1 Overriding a password 193
- 7.1.1 The Charts Tab 196
- 7.1.2 The Browser Tab 197
- Showing tag details 199
- Adding tags to a watch window 199
- 7.1.3 The Console Tab 200
- Communications errors 201
- 7.1.4 The Controller Log Tab 203
- 7.2.1 Scanning 204
- 7.2.2 Loading 205
- 7.2.3 Errors 206
- 7.3.1 The Debugger Window 208
- Show Debug Trace 211
- View Debug Trace 211
- Remove All Breakpoints 212
- Display Breakpoint List 212
- Single Step 213
- 7.3.8 Forcing New Tag Values 214
- Strings and Timers 217
- 8.2.1 Modbus Address 221
- 8.2.2 Types of Modbus data 222
- Chapter 9: Troubleshooting 229
- 9.1 LED Boot Indicators 230
- 9.2 Hardware Reset 232
- Technical Specifications 234
- Connection Diagram 235
- Outputs tab 235
- Failsafe tab 236
- Ouput tab 246
- OL2205 Configuration Options 252
- Input Connections 260
- Theory of Operation 260
- Input Signal 261
- Inputs tab 263
- Channel tabs 264
- General Overview 266
- Pulse and Direction 266
- Quadrature Encoder Input 267
- Up/Down Count 267
- Z and LS Presetting 267
- Output Control 267
- Frequency Measurement 267
- Counter tab 271
- Output tabs 273
- Indicators tab 286
- Buttons tab 287
- Messages tab 292
- A.17 OL3440 Display Panel 293
- A.18 OL3850 Keypad Terminal 294
- Data Entry tab 297
- B.1 General Commands 300
- B.1.4 Clear 302
- B.1.5 Enable and Disable 302
- B.1.6 Get Tag Name 303
- B.1.7 Wait 304
- B.2 Timer Commands 305
- B.2.3 Timer Preset 306
- B.3 String Commands 308
- B.3.2 String Concat 309
- B.3.4 String Mid 311
- B.3.5 String Insert 312
- B.3.6 String Delete 313
- B.3.7 String Replace 315
- B.3.8 String Format Integer 316
- B.4 Diagnostics Commands 318
- B.4.1 Diag Get Tag Status 319
- B.4.2 Diag Set Tag Status 320
- B.4.3 Diag Clear Tag Status 321
- B.5 Serial Commands 323
- B.5.3 Serial Read Byte 326
- B.5.4 Serial Write Byte 327
- B.5.5 Serial Read MultiBytes 328
- B.5.7 Serial Get Comm Errors 330
- B.6 Date/Time Commands 332
- B.6.2 Date/Time Format 333
- B.6.3 Get Elapsed Time 334
- B.7 Operator Panel Commands 335
- C.1 Relays and Coils 340
- Functional Description 341
- Configuration Reference 341
- C.1.5 Output Coil (OC) 342
- C.1.7 Latched Coil (LOC) 343
- C.1.8 Unlatched Coil (UOC) 344
- C.2 Timer and Counter Blocks 352
- C.2.2 Timer, ON Delay (TON) 353
- C.2.3 Timer, OFF Delay (TOF) 354
- C.2.4 Counter, Up (CTU) 355
- C.2.5 Counter, Down (CTD) 357
- C.3 Math Blocks 361
- C.3.2 Subtract (SUB) 362
- C.3.3 Divide (DIV) 364
- C.3.4 Multiply (MUL) 365
- C.3.5 Square Root (SQRT) 366
- C.3.6 Modulus (MOD) 368
- C.3.7 Sine (SIN) 369
- C.3.8 Cosine (COS) 370
- C.3.9 Tangent (TAN) 371
- C.3.10 Arc Sine (ASIN) 372
- C.3.11 Arc Cosine (ACOS) 373
- C.3.12 Arc Tangent (ATAN) 374
- C.3.13 Absolute Value (ABS) 375
- C.3.14 Logarithm (LOG) 376
- C.3.16 Exponential (EXPT) 378
- C.3.18 Expression (EXPR) 381
- C.4 Comparison Blocks 383
- C.4.3 Equal to (EQ) 385
- C.4.4 Not Equal to (NE) 387
- C.4.6 Less Than (LT) 389
- C.5.1 And (AND) 391
- C.5.2 Or (OR) 393
- C.5.3 Exclusive Or (XOR) 395
- C.5.4 Not (NOT) 396
- C.5.5 Shift bits Left (SHL) 398
- C.5.6 Shift bits Right (SHR) 399
- C.5.7 Rotate bits Left (ROL) 401
- C.6 Selection Blocks 404
- C.6.3 Limit value (LIM) 407
- C.7 String Blocks 410
- C.7.7 Compare strings (CMP) 418
- C.8 Flow Control Blocks 427
- C.9 Miscellaneous Blocks 429
- C.9.5 Truncate (TRUNC) 434
- C.9.10 Move (MOVE) 440
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