CPU capacity and expansion limits
The CS1G-CPU42H holds 64K words of program memory. Expansion tops out at 30 modules across two racks. Mounts on the CS1 backplane, same footprint as the higher-end CS1G units. RS-232C and USB ports are physically identical across the CS1G family, so a swap from a 42H to a 45H doesn't rewire the panel — just watch the module count if the build exceeds 30.
Product status is active per Omron's lifecycle records; no end-of-life announcement on file. Carries CE, cULus, Lloyd's Register, and NK (Korean Register of Shipping) approvals — covers European, North American, and marine applications without separate certification runs.
Sourcing and fit for BOM line
Active part, no known PCN. Available for immediate quoting against your BOM requirement. Approvals (CE, cULus, Lloyd, NK) already listed on the spec plate — no additional certification paperwork needed for most industrial and marine panels.