Overview
The 140CPU11303 is a Modicon Quantum automation processor with 512K internal RAM, supporting 30 I/32 O distributed I/O words and up to 500 I/500 O per network across 2 remote and 3 distributed networks. It carries one Modbus RS232 port and one Modbus Plus port, runs on an 80186 processor, and is certified FM Class 1 Division 2 and cUL for hazardous locations.
How it compares
Compared to the 140-CRA-212-10 remote I/O drop, the 140CPU11303 handles 30 I/32 O distributed I/O words versus the 140-CRA-212-10's 30 I/32 O, but the 140CPU11303 adds local and remote I/O expansion up to 64 I/64 O max local and 64 I/64 O remote, plus 500 I/500 O per network — the 140-CRA-212-10 is a fixed I/O drop without network-level I/O scaling.