Omron SYSMAC CVM1 Series Operation Manual page 36

Data Areas for PC Link Systems
LR Area Allocation for
Link #0 in Multi-level
Systems
Link Relay words 16 Units connected
32 bits (2 words) per
CIO 1000 CIO 1001 Node 0
CIO 1002 CIO 1003 Node 1
CIO 1004 CIO 1005 Node 2
CIO 1006 CIO 1007 Node 3
CIO 1008 CIO 1009 Node 4
CIO 1010 CIO 1011 Node 5
CIO 1012 CIO 1013 Node 6
CIO 1014 CIO 1015 Node 7
CIO 1016 CIO 1017 Node 8
CIO 1018 CIO 1019 Node 9
CIO 1020 CIO 1021 Node 10
CIO 1022 CIO 1023 Node 11
CIO 1024 CIO 1025 Node 12
CIO 1026 CIO 1027 Node 13
CIO 1028 CIO 1029 Node 14
CIO 1030 CIO 1031 Node 15
LR Area Allocation for
Link #1 in Multi-level
Systems
Link Relay words 16 Units connected
32 bits (2 words) per
CIO 1032 CIO 1033 Node 0
CIO 1034 CIO 1035 Node 1
CIO 1036 CIO 1037 Node 2
CIO 1038 CIO 1039 Node 3
CIO 1040 CIO 1041 Node 4
CIO 1042 CIO 1043 Node 5
CIO 1044 CIO 1045 Node 6
CIO 1046 CIO 1047 Node 7
CIO 1048 CIO 1049 Node 8
CIO 1050 CIO 1051 Node 9
CIO 1052 CIO 1053 Node 10
CIO 1054 CIO 1055 Node 11
CIO 1056 CIO 1057 Node 12
CIO 1058 CIO 1059 Node 13
CIO 1060 CIO 1061 Node 14
CIO 1062 CIO 1063 Node 15
Using the LR Area
8 Units connected
64 bits (4 words) per
Unit Unit
Node 0
Node 1
Node 2
Node 3
Node 4
Node 5
Node 6
Node 7
8 Units connected
64 bits (4 words) per
Unit Unit
Node 0
Node 1
Node 2
Node 3
Node 4
Node 5
Node 6
Node 7
In some cases, unused words in the PC Link's LR Area can be used as work
words. Unused words at the end of the LR Area (with word addresses higher
than the ones allocated to the highest actual node address in the PC Link)
can be used as work words.
In multi-level systems, the words at the end of each Link's (Link #0 and Link
#1) LR Area can be used as work words.
4 Units connected
128 bits (8 words) per
Unit
Node 0 Node 0
Node 1
Node 2 Node 1
Node 3
4 Units connected
128 bits (8 words) per
Unit
Node 0 Node 0
Node 1
Node 2 Node 1
Node 3
Section 2-5
2 Units connected
256 bits (16 words)
per Unit
2 Units connected
256 bits (16 words)
per Unit
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