The 1756-L73XT ControlLogix-XT Processor Module from Rockwell Automation is a ruggedized high-performance PLC/PAC controller designed for harsh, corrosive, and extreme temperature industrial environments.
Unlike standard ControlLogix controllers, the XT series is specially engineered with conformal coating protection, making it suitable for offshore, chemical processing, and heavy-duty industrial applications where humidity, corrosion, and temperature fluctuations are critical challenges.
It combines the same core control capabilities as the L73 platform with enhanced environmental durability.
Technical Specifications (Including Size & Weight)
| Parameter | Specification |
|---|---|
| Model | 1756-L73XT |
| Series | ControlLogix 5570-XT |
| Processor Type | PLC / PAC Controller (XT Ruggedized) |
| User Memory | 8 MB |
| I/O Memory | ~0.98 MB |
| Nonvolatile Memory | 1 GB SD card (expandable up to 2 GB) |
| Programming Port | USB 2.0 |
| Maximum I/O Capacity | Up to 128,000 digital / 4,000 analog |
| Controller Tasks | Up to 32 tasks |
| Programs per Task | Up to 100 programs |
| Conformal Coating | Yes (XT corrosion protection) |
| Backplane Current (5.1V DC) | ~0.8 A |
| Power Dissipation | ~2.5 W |
| Programming Software | RSLogix 5000 / Studio 5000 |
| Battery / Energy Storage | 1756-ESMCAPXT module |
| Operating Temperature | -20°C to 70°C (XT extended range) |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5%–95% non-condensing |
| Weight | ~0.25 kg |
Physical Dimensions
- Size (H × W × D): 127 × 178 × 102 mm
The XT design maintains standard ControlLogix chassis compatibility while adding environmental protection for extreme industrial conditions.
Recommended Related Models
For system design and expansion, the L73XT is commonly paired with:
- 1756-L71XT / 1756-L72XT ControlLogix-XT CPUs
- 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 & XT Models
Within the same ecosystem, widely deployed controllers include:
- 1756-L71 / L72 / L73 standard ControlLogix CPUs
- 1756-L71XT / L72XT / L73XT rugged XT controllers
- 1756-L7SP GuardLogix safety partner modules
- 1756-EN2T high-speed Ethernet communication modules
These controllers support scalable industrial automation across both standard and extreme environments.
