PLC Modules — Compact, Modular & Motion

Usually yes within the same family — an FX3U for another FX3U, or a CPU 1214C for the same order number. The risk points are firmware-dependent instructions and option-card compatibility: a project written for a newer firmware may not run on an older revision of the same CPU. We confirm the exact order number and firmware requirement at quotation before you pay, so the program uploads without surprises.

Five things: the exact CPU order number on the label; I/O count and type (relay vs transistor outputs, voltage class); power supply (24 VDC or 100–240 VAC); communications (onboard Ethernet / RS-485 or an option card); and whether a program backup exists. Send us a photo of the nameplate and the rail, and we check all five before quoting.

Every PLC on this page is a generic aftermarket compatible replacement, NOT an original OEM product. Brand names and model numbers are the property of their owners and are used only to state what each unit replaces. Units are built to the same mounting dimensions and terminal layout, are inspected before shipment, and carry our 12-month warranty as seller — InverterPLC is an independent supplier, not an authorised distributor of any brand named here.

We supply hardware, not programming services — but we size the replacement so your existing project works. For a like-for-like swap, the program uploads straight from your backup. For a family change (for example a discontinued CPU with no direct successor), send us the old and new part numbers and we will flag the differences that affect the project before you commit.

Every unit is procured per order. We confirm the exact lead time at quotation — typically 1 to 3 weeks — and state it in writing before you pay. We ship by DHL / FedEx / UPS express to Vietnam, Thailand, Malaysia, Indonesia, the Philippines and Singapore, and by sea or air freight for consolidated orders.