Omron C120 System Manual page 118

Memory Allocation
When using the C200H-RM001-PV1 Master Unit with a CS1-series PC, there are differences in memory allocation
for the following areas (details given in Data Configuration below):
SYSMAC BUS Area
Optical I/O Unit and I/O Terminal Area.
Data Configuration
SYSMAC BUS Area (Slave Rack Allocation)
The SYSMAC BUS Area contains 50 words with addresses ranging from CIO 3000 to CIO 3049. Each C200H
Slave Rack is allocated 10 words based on the Rack's rack number (No. 0 to 4). From these 10 words, one word
(16 bits) is allocated to each slot in the Slave Rack from left (i.e., from the slot furthest away from the Slave) to right.
Allocations are fixed by slot, i.e., if there is no Unit in a slot, the word normally allocated to that slot will not be used.
Note 1. The words are allocated according to rack numbers even when two Master Units are being used.
2. If C500 Slaves (C500-RT201) are used, they are allocated twice the number of words allocated to
C200H Slaves (20 words). Any two non-consecutive numbers between 0 and 3 can be set as rack num-
bers in this case.
Optical I/O Unit and I/O Terminal Area (Allocation for Slaves other than
Slave Racks)
The Optical I/O Unit and I/O Terminal Area contains 32 words with addresses ranging from CIO 3100 to CIO 3131.
Each Slave is allocated 1 word based on its unit number setting (0 to 31) except for Optical I/O Units, which are
allocated 2 words each.
Note The words are allocated according to unit numbers even when two Master Units are being used.
Note When there are two Masters mounted to the CPU Rack, make settings so that the same words are not allo-
cated to two different Slaves.
Appendix D
Using the C200H-RM001-PV1 with
CS1-series PCs
Rack number
0
1
2
3
4
Unit number
0
1
to
31
Allocated words
CS1
CIO 3000 to CIO 3009
CIO 3010 to CIO 3019
CIO 3020 to CIO 3029
CIO 3030 to CIO 3039
CIO 3040 to CIO 3049
Allocated words
CS1
CIO 3100
CIO 3101
to
CIO 3131
C200H/HX/HG/HE/HS
IR 050 to IR 059
IR 060 to IR 069
IR 070 to IR 079
IR 080 to IR 089
IR 090 to IR 099
C200H/HX/HG/HE/HS
IR 200
IR 201
to
IR 231
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