Rockwell-automation 1761 MicroLogix 1000 Programmable Controllers Manual de usuario descargar pdf (Pagina 242)

Preface

MicroLogix 1000 Programmable Controllers User Manual

12–28

Example 3

To enter the REM Run mode and have the HSC ACC and Interrupt Subroutine

resume their previous state, while externally initializing the HSC outputs, apply the

following:

Rung 2:0

Unlatch or Latch the output bits under HSC control during the first

scan after the HSC instruction is executed for the first time. (Note,

you

could

place this rung before the HSC instruction; however, this is

not recommended.)

| S:1 +HSL–––––––––––––––+ |

|––][–––––––––––––––––––––––––––––––––––––––––––+HSC LOAD +–|

| 15 |Counter C5:0| |

| |Source N7:0| |

| |Length 5| |

| +––––––––––––––––––+ |

Rung 2:1

| +HSC––––––––––––––––––––+ |

|–––––––––––––––––––––––––––––––––––––+HIGH SPEED COUNTER +–(CU)–|

| |Type Encoder (Res,Hld)+–(CD) |

| |Counter C5:0+–(DN) |

| |High Preset 1000| |

| |Accum 0| |

| +–––––––––––––––––––––––+ |

Rung 2:2

This rung is programmed with the knowledge of an HSL mask of 0007

(Outputs

0–2 are used) and initializes the HSC outputs each REM Run mode entry.

Outputs O/0 and O/1 are off, while Output O/2 is on.

| S:1 O:0 |

|––][––––––––––––––––––––––––––––––––––––––––––––––––––––+––(U)––+|––|

| 15 | 0 | |

| | O:0 | |

| +––(U)–––+ |

| | 1 | |

| | O:0 | |

| +––(L)–––+ |

| 2 |

1 2 ... 237 238 239 240 241 242 243 244 245 246 247 ... 421 422

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Rockwell-automation 1761 MicroLogix 1000 Programmable Controllers Manual de usuario Pagina 242