The 1756-L64 ControlLogix 5560 Processor Module from Rockwell Automation is a high-capacity PLC controller designed for large-scale industrial automation systems that demand strong processing performance, extensive memory handling, and flexible multi-network communication.
Positioned at the upper end of the ControlLogix 5560 family, the L64 is widely used in complex manufacturing plants, process industries, and infrastructure control systems. Although discontinued, it remains highly relevant in installed-base environments where system continuity and legacy compatibility are critical.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 1756-L64 |
| Series | ControlLogix 5560 |
| Processor Type | PLC / PAC Controller |
| User Memory | 16 MB |
| I/O Memory | 478 KB |
| Maximum I/O Capacity | 128,000 digital / 4,000 analog |
| Controller Connections | Up to 250 |
| Nonvolatile Memory | 1784-CF128 CompactFlash (optional) |
| Serial Communication | RS-232 (DF1, ASCII, DH-485) |
| Network Support | Via external modules (EtherNet/IP, ControlNet, DeviceNet, DH+) |
| Controller Tasks | Up to 32 tasks |
| Programs per Task | Up to 100 programs |
| Redundancy Support | Supported |
| Backplane Current (5.1V DC) | ~1.2 A |
| Backplane Current (24V DC) | ~14 mA |
| Power Dissipation | ~3.5 W |
| Programming Software | RSLogix 5000 |
| Battery | 1756-BA2 lithium battery |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5%–95% non-condensing |
| Dimensions (H × W × D) | 13.3 × 5.1 × 14.5 cm |
| Weight | ~0.32–0.5 kg |
The module follows the standard single-slot ControlLogix chassis design, allowing straightforward replacement or integration into existing industrial racks.
Recommended Related Models
For upgrades or system expansion, the following modules are commonly paired with the 1756-L64:
- 1756-L71 / L72 ControlLogix CPUs (modern upgrade path)
- 1756-EN2T EtherNet/IP communication module
- 1756-ENBT Ethernet bridge module
- 1756-CNB ControlNet bridge module
- 1756-IB16 / 1756-OB16 digital I/O modules
Popular Allen-Bradley ControlLogix Models
Within the same ecosystem, commonly used controllers include:
- 1756-L61 mid-range processor
- 1756-L62 high-memory CPU
- 1756-L63 extended memory controller
- 1756-L71 / L72 modern ControlLogix processors
- 1756-EN2T high-speed Ethernet modules
These modules represent the evolution of ControlLogix systems toward higher performance, improved networking, and modern industrial integration.
