Address Mapping For Shared Memory - ICPDAS ET-2268 CR User Manual

ET-2200 Series Ethernet I/O Modules
5.5.1

Address Mapping for Shared Memory

Note: All DI, DO, AI, and AO signals shared a single memory space. The storage address starts at 3000.
Writing 16 bits of DI/DO data to addresses
register to the address 3000.
Writing 16 bits of DI/DO data to addresses
register to the address 3001.
The correspondence of addresses is as follows, using the division to take the quotient and remove
the remainder.
AIO_Address = (DIO_Address – 3000) / 16 + 3000
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3000 – 3015 is equivalent to writing one 16-bit AI/AO
3016 – 3031 is equivalent to writing one 16-bit AI/AO
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