Configuring an M1 CPU with Concept
322 870 USE 101 10 V.2
Changing the Size of the I/O Map
Introduction The default size of the I/O Map is 144 words. Y ou ma y want to a djust this number to
provide more support for an I/OBus network or to increase the size of the full logic
area.
Processors for
I/OBus Networks With I/OBus, an I/O Map table is used to def in e 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 Availabl e Logic Area.
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Default 144 words
Minimum 4 words
Maximum 6143 words, or not to exceed the PLC’s memory size.
Default 144 words
Minimum 4 words