Rockwell-automation 1771-DE Absolute Encoder Module User Manual Uživatelský manuál stáhnout pdf (Strana 44)

Appendix A

AĆ3

Figure A.1

PLCĆ2/30

Remote System Example

PLC-2/30

1772-SD2

1

7

7

1

A

S

1

7

7

1

D

E

Rack 1

1

7

7

1

A

S

1

7

7

1

D

E

Rack 2

1

7

7

1

A

S

1

7

7

1

D

E

Rack 3

1

7

7

1

A

S

1

7

7

1

D

E

Rack 4

108121ĆI

We want to find the worst case time between two consecutive

block-transfer-read operations from the same module in this system.

Solution:

Program length = 4K words (K = 1,024)

Number of chassis = 4 (1 assigned rack number/chassis)

1 2 ... 39 40 41 42 43 44 45 46 47 48 49 ... 79 80

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