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I/O Word Allocation Examples
Example 5 C1000H or C2000H with Slaves, I/O Link Units, and Optical I/O Units
C1000H or C2000H CPU
Rack
Word Multiplier 0
IR 6
16 pts.
IR 4
16 pts.
IR 2 & 3
32 pts.
IR 1
16 pts.
IR 0
16 pts.
C500 Expansion I/O Rack
16 pts.
16 pts.
32 pts.
16 pts.
16 pts.
C500 Expansion I/O Rack
16 pts.
16 pts.
16 pts.
C500 Expansion I/O Rack
16 pts.
16 pts.
16 pts.
40
#0
Slave #0
No Word
Multiplier
needed.
(I/O Link and optical
transmitting
Units
not connected.)
#0
IR 15
IR 14
IR 12 & 13
Slave #0
IR 11
IR 10
C2000H
CPU Rack
Word Multiplier 2
I/O Link Unit Set to 16 pts.
IR 25
IR 24
IR 23
Word Multiplier 1
IR 28
IR 27
IR 26
Because the I/O Units are assigned words starting at the lower end (word 00),
duplication can be avoided by starting the Optical I/O Unit words and I/O Link
Unit words from the upper end.
Slave Rack
32 pts.
IR 8 & 9
16 pts.
IR 7
16 pts
IR 6
Slave Rack
#1
16 pts.
IR 19
16 pts.
IR 18
16 pts.
IR 17
16 pts.
IR 16
Slave #1
C20, K-type
or P-type PC
C20 I/O Link Unit
(32 pts.)
Optical I/O Units
Terminator
Set words:
IR 31 "H"
IR 30 L"
Check to see that same word in not allocated twice.
Change word multiplier or word setting if necessary.
Section
Optical I/O Units
Terminator
Set words:
IR 31 "H"
IR 30 "L"
Allocated words:
IR 31 "H"
IR 30 "L"
Slave Rack
IR 22
16 pts.
IR 21
16 pts.
IR 20
16 pts.
Terminator
Set words:
IR 30
IR 29
Allocated words:
*C20 I/O Link Unit
IR 94 & 95
occupies 2 words.
IR 93
IR 31 can there-
fore not be set.
Allocated words:
IR 63 "H"
IR 62 "L"
3-4
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