Rockwell-automation 1771-IR , D17716.5.76 RTD INPUT MODULE Manual de usuario descargar pdf (Pagina 19)

Module Programming

Chapter 4

42

Note that PLC–2 processors that do not have the block transfer instruction must

use the GET–GET block transfer format which is outlined in Appendix D.

Figure 4.1

PLC-2

Family Sample Program Structure

BLOCK XFER READ

DATA ADDR:

MODULE ADDR:

BLOCK LENGTH:

FILE:

XXX

RGS

XXXX:XXXX

FILE TO FILE MOVE

COUNTER ADDR:

POSITION:

FILE LENGTH:

FILE A:

XXX

YYYY-XXXX

FILE R:

RATE PER SCAN:

XXX-XXX

XXX

Block Transfer

BTR Done Bit

Power-up

Read Done Bit

Enable

Done

BLOCK XFER WRITE

DATA ADDR:

MODULE ADDR:

BLOCK LENGTH:

FILE:

XXX

RGS

XXXX:XXXX

Enable

Done

Bit

Enable

Done

ou can replace the pushbutton with a timer "done" bit to initiate the block transfer

write on a timed basis. You can also use any storage bit in memory

Pushbutton

Block Transfer Write

Pushbutton

Block Transfer Read

Power-up Bit

Done Bit

Power-up Bit

Storage

Bit A

Storage

Bit B

Storage

Bit B

Storage

Bit A

Storag

Bit A

Storag

Bit A

Storage

Bit B

Storage

Bit B

PLC-2 Program Example

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 67 68

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