Product Overview

The 1756-L63, also known as the Logix5563 processor, is a high-capacity programmable automation controller (PAC) from Allen-Bradley’s ControlLogix family, engineered by Rockwell Automation for large-scale industrial deployments -1-7. This controller features substantial user memory, making it the flagship choice for memory-intensive applications such as complex process control, high-axis motion synchronization, and extensive data logging -7. As a core component of the Logix5000 controller family, the 1756-L63 supports multiple programming languages including Relay Ladder, Structured Text, Function Block, and Sequential Function Chart (SFC), providing exceptional flexibility for system designers -1. The 1756-L63 communicates with other devices using its built-in RS-232 serial port and supports a maximum of 250 controller connections -1. This processor is powered through the ControlLogix backplane, drawing 1.2 Amperes at 5.1 Volts DC, and dissipates 3.5 Watts with a heat dissipation rating of 11.0 BTU per hour -1. For backup memory, the 1756-L63 supports CompactFlash cards such as the 1784-CF64 (64 MB) or 1784-CF128 (128 MB), and uses a battery to back up volatile memory -1. The 1756-L63 is designed to be placed into any slot of a ControlLogix chassis, offering straightforward installation and flexible system configuration -4.

 

Technical Specifications

Parameter Name	Parameter Value
Product Model	1756-L63 (Series B)
Manufacturer	Allen-Bradley / Rockwell Automation
Product Type	ControlLogix Processor (Logix5563)
User Memory	8 MB Standard RAM -7
I/O Memory	478 KB -7
Maximum Digital I/O	128,000 points -1-7
Maximum Analog I/O	4,000 inputs / 2,000 outputs -7
Maximum I/O Connections	4,000 -1
Maximum Controller Connections	250 -1
Tasks Supported	32 tasks, 100 programs per task -1
Logic Execution Speed	0.08 ms per 1,000 instructions -7
Built-in Communication	RS-232 Serial Port (ASCII, DF1, DH-485, Modbus via logic) -1
Backplane Current (5.1V DC)	1.2 A -1
Backplane Current (24V DC)	14 mA -1
Power Dissipation	3.5 W -1
Heat Dissipation	11.0 BTU/hr -1
Operating Temperature	0°C to +60°C -7
Programming Software	RSLogix 5000 / Studio 5000 Logix Designer -1
Certifications	cULus Listed, CE, ATEX, IECEx

 

Main Features and Advantages

High-performance processing architecture: The 1756-L63 is built on a robust PowerPC architecture delivering deterministic performance required for high-speed manufacturing environments -7. With an 800 MHz CPU and logic execution speed of 0.08 ms per 1,000 instructions, the 1756-L63 ensures rapid response times for critical control applications -7. The processor supports up to 32 tasks with 100 programs per task, enabling sophisticated multitasking capabilities for complex automation sequences -1.

Comprehensive communication capabilities: The 1756-L63 features a built-in RS-232 serial port supporting ASCII, DF1 half/full duplex, DF1 radio modem, DH-485, and Modbus via logic communications -1. The 1756-L63 integrates seamlessly with various network protocols including EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, and SynchLink, providing exceptional connectivity options for diverse system architectures -1-4.

Producer/consumer communication model: The 1756-L63 utilizes a producer/consumer communication model that optimizes bandwidth across networks, enabling efficient data exchange between multiple controllers and I/O modules -4. This architecture allows the 1756-L63 to share data with other devices without requiring additional programming, significantly reducing system complexity and improving performance.

Scalable memory and I/O capacity: The 1756-L63 provides 8 MB of user memory with 478 KB dedicated to I/O memory, supporting up to 128,000 digital I/O points and 4,000 analog I/O points -7. This substantial capacity makes the 1756-L63 ideal for large-scale automation projects requiring extensive data handling and complex control algorithms.

Redundancy support for high availability applications: The 1756-L63 can be configured for redundancy using the 1757-SRM redundant module, providing failover capability for mission-critical applications where system downtime cannot be tolerated. This feature makes the 1756-L63 particularly valuable in continuous process industries such as chemical processing and power