Rockwell-automation 1771-IJ_IK IK ENCODER/COUNTER MODULES Manual de usuario descargar pdf (Pagina 53)

6–9Block Transfer Programming

Publication 1771ĆUM006B-EN-P - June 2002

PLCĆ5 Family Processors

You can use the following ladder logic with PLC-5 processors. This

program assumes that your application requires a single BTR and

BTW to pass data between the processor and the module.

Ladder logic alternates the execution of BTR and BTW instructions.

The processor checks data validity before accepting read data, and

sets one enable bit at a time.

Refer to Figure 6.7 for generalized ladder logic, and to Figure 6.8 for

example ladder logic with entered values.

Figure 6.7

Generalized Ladder Logic for PLCĆ5 Block Transfer

BTW

BTR

15047

BTW

Control Block

Data File yyy

xxx

Continuous no

BTR

Control Block

Data File aaa

zzz

Continuous no

BTW

BTR

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 67 68

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Rockwell-automation 1771-IJ_IK IK ENCODER/COUNTER MODULES Manual de usuario Pagina 53