Rockwell Automation 1771-DE Absolute Encoder Module User Manual - Manual (Page 44)

Appendix A
AĆ3
Figure A.1
PLCĆ2/30 Remote System Example
PLC-2/30
1772-SD2
1
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Rack 1
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Rack 2
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Rack 3
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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)