Allen-Bradley MicroLogix 1400 PLCs

MicroLogix 1400 controllers use 1766 catalog numbers. Variants can differ in their power supply and I/O configuration; retain the letters after L32 when identifying a replacement.

A hardware replacement also needs the machine's program and communication settings. Keep a project backup before removing a working controller where possible. Programming and connection leads can be found in MicroLogix cables and accessories, with compatibility determined by the specific cable and controller port.