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Configuring an M1 CPU with Concept
268
870USE10110 July 2004
Changing the Size of the I/O Map for M1 CPUs with Concept
Introduction The default size of the I/O map is 144 words. You may want to adjust this number to
provide more support for an I/O bus network or to increase the size of the full logic
area.
Processors for
I/OBus Networks
With I/O bus, an I/O map table is used to define the number, location and type of
I/O devices on the network bus.
All Other
Processors
Other processor adapters only use the I/O map for local I/O. The default of 144
words is more than sufficient for any Momentum I/O base. Depending on the
requirements of your I/O base, you may be able to reduce the number of words to
the minimum, 4, in order to increase the Available Logic Area.
Default 144 words
Minimum 4 words
Maximum 6143 words, or not to exceed the PLC’s memory size.
Default 144 words
Minimum 4 words
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