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Unit Numbers and I/O Word Allocation
Example 3: C200H Masters
and Remote Terminals
C200H
Master
C200H CPU Rack
IR 4
IR 3
Set to Unit #0 or Unit #1.
IR 1
IR 0
3-2-3
Combined Systems
C200H Masters and C500
Slaves
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This example Systems shows word allocations for one C200H Master, and
two of the maximum possible 32 Remote Terminals. As shown, the words
actually allocated to Remote Terminals connected in C200H Master Subsys-
tems are 200 higher than the settings. (Unallocated I/O words may be used
as work words.)
Remote Terminal
Word setting:
Allocated word:
C500 Slaves connected to C200H Masters must be counted as two Slaves in
counting the maximum possible Slaves connected to the Master. Each C500
Slave Rack is allocated the words shown in the following table. Word alloca-
tions overlap for consecutive unit numbers. Be sure that word allocations are
not duplicated. Note that unit number 4 cannot be designated. Words will be
allocated according to the C500 System, i.e., not according to slot words, but
left to right to actually mounted I/O Units. The total number of words used by
the Units mounted to a C500 Slave Rack must not exceed 20. Expansion I/O
Racks cannot be connected to C500 Slave Racks.
Unit number
Allocated words
0
50 to 69
1
60 to 79
2
70 to 89
3
80 to 99
Set as terminator.
Remote Terminal
0
Word setting:
200
Allocated word:
Section 3-2
31
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37
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