What the CS1H-CPU67H carries: 448K words and 80-module expansion
The Omron CS1H-CPU67H is a Control Logic CPU from the CS1H series, built for mid-to-large scale automation. Program memory sits at 448K Words, enough for complex sequencing, motion, or process loops. Expandability tops out at 80 modules spread across up to 7 racks, so the I/O count scales with the machine. Communication ports are RS-232C and USB — the RS-232C covers legacy HMIs or drives; USB handles programming via CX-One. The CPU mounts on a backplane, not DIN rail, so plan the rack layout accordingly.
Backplane mounting and rack sizing
The CPU installs into a CS1-series backplane and supports up to 7 racks with 80 modules. Program memory is 448K Words.