Allen-Bradley 1747-L511 SLC 500 Input Output Module

Allen-Bradley 1747-L511 is the SLC 5/01 CPU Processor Unit for the SLC 500 modular controller family, delivering central processing and DH-485 communications for compact, legacy automation projects. It provides 1K of user memory with up to 1 KB of program storage and is commonly paired with memory options (such as EEPROM-based modules) to store logic and data; battery-backed RAM is supported via compatible memory modules. Power characteristics include backplane current at 5 VDC of about 350 mA and 24 VDC backplane current around 105 mA, with an operating temperature range of 0 to 60 C. Designed for use in an SLC 500 modular chassis, it works with compatible I/O modules and DH-485 networks to control simple, reliability‑driven automation tasks.