Rockwell-automation 1771-IR Series D RTD Input Module User Manual Instrukcja Użytkownika Pobierz pdf (Strona 24)

3–2 Module Programming

Publication 1771Ć6.5.129 - March 2000

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 3.1

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

You 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

Storage

Bit A

Storage

Bit A

Storage

Bit B

Storage

Bit B

PLC-2 Program Example

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 78 79

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