Digital I/OΒΆ
DC551-CS31 is able to manage up to 240 digital I/O channels. It uses 2 digital bus addresses in this case.
| The physical address to identify the I/O is | address n (switch address) for the 1st module (120 I/O) |
| address n + 7 + bit 8/15 = 1 for the 2nd module |
To be compatible with old CPU and EC500 using this physical address, to address I/O in user program: Use only 6 expansions with 32 DI.