128277-01
Allen-Bradley SLC 500 Series 16-Channel Digital Input Module (Part Number: 128277-01)
(Part Number Interpretation:
- 128277: Core product line prefix for Allen-Bradley’s SLC 500 “Digital Input” modules, denoting compatibility with SLC 500 controllers (e.g., SLC 5/03, SLC 5/04, SLC 5/05) and membership in the “128” family of legacy discrete I/O components—optimized for cost-effective small-scale automation.
- 01: Hardware configuration suffix; “01” specifies 16-channel discrete input functionality, 24 V DC sourcing (PNP) signal type, and no optional features (e.g., isolation)—suitable for standard industrial environments where basic digital input acquisition is required.
- Core Positioning: The “legacy discrete input hub for SLC 500 systems,” enabling reliable capture of on/off signals from field sensors to support machine control tasks—critical for maintaining operational continuity in facilities still using SLC 500 infrastructure. )
2. Product Description
The 128277-01 is a dedicated 16-channel digital input module developed by Rockwell Automation for the Allen-Bradley SLC 500 controller family, a legacy platform widely deployed in manufacturing (e.g., packaging, assembly lines), material handling (e.g., conveyors, lifts), and automotive auxiliary systems (e.g., tool changers, part detectors). It integrates high channel den