{"product_id":"allen-bradley-1747-l524-slc-5-02-plc-cpu-module","title":"Allen-Bradley 1747-L524 SLC 5\/02 PLC CPU Module","description":"\u003cdiv\u003e\u003cp\u003eAllen-Bradley 1747-L524 is the SLC 5\/02 CPU module for the Rockwell Automation SLC 500 family, delivering ladder-logic processing with 4 KB of user memory in the common Series B\/C configuration (Series A uses 1 KB). It includes native RS-232 serial communication and a DH-485 port for networked PLC devices, enabling straightforward programming and remote I\/O interaction in small to mid-size control panels. The memory backing for the CPU varies by revision, with Rockwell literature listing EEPROM\/UVPROM options in some configurations and other sources noting Flash or battery-backed RAM in different series; for Series B\/C the 4 KB memory is standard, while Series A ships with 1 KB. The CPU is chassis-mountable within an SLC 500 rack and draws roughly 0.5 A at 5 V (and 0.175 A at 24 V) when the back-up RAM option is used. Firmware support for Series C starts with OS302 or higher, per 1747-IN010 documentation, while earlier revisions use earlier OS versions. The 1747-L524 provides a compact, cost-effective control solution for discrete manufacturing tasks, machine control, and small automation loops that require reliable SLC 500 compatibility and simple DH-485\/RS-232 communications.\u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51658965123374,"sku":null,"price":175.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_b9fbe18e-822d-487b-8b16-9c10f3387778.jpg?v=1769526089","url":"https:\/\/plgautomation.com\/products\/allen-bradley-1747-l524-slc-5-02-plc-cpu-module","provider":"PLG Automation ","version":"1.0","type":"link"}