The Allen-Bradley 1756-L55M14 ControlLogix Processor is a high‑performance Logix5555 CPU (Series A) that pairs the 1756-L55 base with the 1756-M14 memory module to provide 3.5 MB of user memory for programs and data. It supports up to 128,000 I/O points, including as many as 4,000 analog inputs and 2,000 analog outputs, with a reported program scan time of 0.08 ms for fast control loops. The memory setup uses a battery‑backed option via 1756-BA1 or 1756-BATM, and the module weighs about 0.8 lb and operates from 0 to 60 C (32 to 140 F) with 5–95% noncondensing humidity. Backplane current draw is 1.23 A at 5 VDC and 0.014 A at 24 VDC.
