A
A-1 Channel/Relay Numbers
100
SYSMAC CP1L Getting Started Guide
Ap
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I/O Areas
With CP1L, the first 1 or 2 channel(s) of the input and output areas, starting at 0CH
and 100CH, respectively, are reserved by the CPU unit.
As expansion I/O units and expansion units are connected to the CPU unit, input
and output areas are assigned 1 channel at a time, in the order of connection.
• Number of Reserved Channels and Expansion (I/O) Units
For example, when using a 40-point I/O unit, input areas 0CH and 1CH, and output
areas 100CH and 101CH are assigned to the internal I/O of the CPU unit.
If expansion (I/O) units are connected to the CPU unit, input areas 2CH and later,
and output areas 102CH and later, will be assigned in order.
When the CPU unit is powered ON, input and output channels are automatically
allocated to the input and output areas of the expansion (I/O) units after the
connections are checked.
Changes to the connection order of the units will result in inconsistencies with the
ladder program. Be sure to review the ladder program when changing the unit
connection order.
Input area
0.00 to 99.15 (100 CHs)
Output area
100.00 to 199.15 (100 CHs)
CPU unit
Reserved CH
Number of
Expansion (I/O)
Units Allowed
Input area
Output area
10-point I/O unit
0 CH
100 CH
0
14-point I/O unit
0 CH
100 CH
1
20-point I/O unit
0 CH
100 CH
1
30-point I/O unit
0 CH, 1 CH
100 CH, 101 CH
3
40-point I/O unit
0 CH, 1 CH
100 CH, 101 CH
3
60-point I/O unit
0 CH, 1 CH, 2 CH
100 CH, 101 CH, 102 CH
3
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