The CS1G-CPU44H is a CS1G-series CPU unit for the Omron CS1 rack-based PLC platform. It carries 64K words of program/data memory, RS-232C and USB ports for programming and HMI connection, and mounts on the backplane for power and I/O bus access.
Expansion Capacity Compared to CS1G-CPU43H
The CS1G-CPU44H supports up to 40 modules distributed across 3 racks, whereas the CPU43H (same series, same memory) is limited to 30 modules on 2 racks. If you need more than 30 modules—or prefer the flexibility of a third rack for grouping I/O—the CPU44H is the right pick. Otherwise, both CPUs share identical footprint, backplane, and programming via CX-One.
Production Status & Sourcing
This CPU is listed as an active product by the manufacturer, so there’s no end-of-life pressure or last-time-buy deadline. Standard lead times apply; the part can be specified into a BOM and quoted for scheduled delivery. No special surplus or broker channel needed.
Panel Fit Notes
Mounts on any CS1-series backplane; the CPU occupies one slot and provides the programming port and bus master for expansion racks. Approved for use in CE, cULus, Lloyd, and NK environments.