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CJ2 CPU Unit Software User's Manual - CIP ETI

CJ2 CPU Unit Software User's Manual - CIP ETI

CJ2 CPU Unit Software User's Manual - CIP ETI

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8 I/O Allocations and <strong>Unit</strong> SettingsBasic I/O <strong>Unit</strong>s in Expansion RacksI/O allocation to Basic I/O <strong>Unit</strong>s continues from the <strong>CPU</strong> Rack to the Expansion Rack connecteddirectly to the <strong>CPU</strong> Rack. Words are allocated from left to right and each <strong>Unit</strong> is allocated asmany words as it requires, just like <strong>Unit</strong>s in the <strong>CPU</strong> Rack.ExampleFrom the left→Power Supply <strong>Unit</strong><strong>CPU</strong> <strong>Unit</strong> Power Supply <strong>Unit</strong>From the left→1 2 3 4 5IN16 pt0000IN16 pt0010IN32 pt00010002IN32 pt00110012IN64 pt1 2 3OUT16 pt0003 0007to0006OUT8 pt0013OUT32 pt00080009<strong>CPU</strong> RackExpansion RackFrom the left→Power Supply <strong>Unit</strong>1 2 3IN16 pt0014IN32 pt00150016OUT16 pt0017Expansion Rack I/O Allocation to Special I/O <strong>Unit</strong>sEach CJ-series Special I/O <strong>Unit</strong> is allocated ten words in the Special I/O <strong>Unit</strong> Area (CIO 2000 toCIO 2959) according the unit number set on the <strong>Unit</strong>. Special I/O <strong>Unit</strong>s can be mounted to the <strong>CPU</strong>Rack or Expansion Racks. The following table shows which words in the Special I/O <strong>Unit</strong> Area areallocated to each <strong>Unit</strong>.<strong>Unit</strong> number Number of words Words allocated0 10 CIO 2000 to CIO 20091 10 CIO 2010 to CIO 20192 10 CIO 2020 to CIO 2029: : :15 10 CIO 2150 to CIO 2159::::::95 10 CIO 2950 to CIO 295988-1 I/O Allocations8-1-2 Automatic AllocationSpecial I/O <strong>Unit</strong>s are ignored during I/O allocation to Basic I/O <strong>Unit</strong>s. Positions containing SpecialI/O <strong>Unit</strong>s are not allocated any words in the I/O Area.<strong>CJ2</strong> <strong>CPU</strong> <strong>Unit</strong> <strong>Software</strong> User’s <strong>Manual</strong>8-7

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