Catalog Number:

1775-L4

Chassis Slot Width:

1 Single Slot

Product Series:

PLC-3 Series (PLC-3/10)

Backplane Current Load:

6.0 A @ +5V DC; 40 mA @ +15V DC

Processor Type:

4 x AMD 2903 (Bit-Slice)

Status Indicators:

Front panel Red/Green LED Indicators

The Allen-Bradley 1775-L4 is a legacy Main Processor Module designed as the central processing core for the PLC-3/10 control system. Engineered to occupy a single chassis slot, this hardware module is responsible for orchestrating overall program execution, handling system diagnostics, and overseeing memory management functions within the controller architecture. It features an advanced internal architecture powered by four AMD 2903 bit-slice microprocessors, which deliver high-speed logic scan times and floating-point mathematical computations. Designed for large-scale industrial operations, the module supports a flexible data table structure and multi-context program execution, while presenting real-time system health data via built-in red and green LED status indicators on its front panel.

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Industrial PC (IPC)

Distributed control system (DCS)

Human-machine interface

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