Order now: Allen-Bradley 1769-L35CR ControlNet CompactLogix Controller
Atlantechdrives provides you the 1769-L35CR, a specialized modular controller designed for industrial environments that rely on the ControlNet network for deterministic, high-speed communication. This processor is ideal for existing plant infrastructures where ControlNet is the standard for scheduled I/O and peer-to-peer data exchange.
- Memory: 1.5 MB User Memory
- Network: 1 ControlNet Port (BNC), 1 RS-232 Serial Port
- I/O Capacity: Supports 30 1769 modules across 3 banks
- Architecture: Logix5000 based
- Protection: Redundant ControlNet media support
Technical Superiority: Deterministic ControlNet Integration
Get now the 1769-L35CR to maintain the highest levels of determinism in your control architecture. Unlike Ethernet, which can be subject to packet collisions, the ControlNet port on the 1769-L35CR uses a Nut (Network Update Time) to ensure that critical I/O data is transmitted at exact, repeatable intervals. This makes the L35CR the definitive choice for synchronized processes in heavy industry, such as steel mills, paper lines, and large-scale water treatment. With 1.5 MB of memory, it provides significant space for logic execution while managing complex ControlNet scheduling. When you procure the 1769-L35CR, you are acquiring a controller that excels in ruggedness and reliability for centralized control over distributed ControlNet I/O racks.
Installation Advice: BNC Connection and Scheduling
When installing the 1769-L35CR, the quality of the ControlNet taps and BNC connectors is paramount. Ensure the network is correctly terminated at both ends. Unlike Ethernet controllers, the 1769-L35CR requires the network to be «Scheduled» using RSNetWorx for ControlNet. Failure to do this will result in the CPU not recognizing remote I/O nodes. Sourcing your 1769-L35CR from Atlantechdrives ensures you get a unit with a verified BNC port and healthy backplane pins, essential for maintaining the high-speed data integrity of the ControlNet bus.
Maintenance and Memory Retention
The 1769-L35CR relies on the 1769-BA lithium battery for memory backup. We recommend a proactive replacement every 2 years. If the «BATT» LED turns red, your program is at risk during the next power cycle. Additionally, use the 1769-MEM1/MEM2 modules for non-volatile backup. Sourcing from Atlantechdrives ensures you get a controller that has been stress-tested for 24/7 industrial uptime.
FAQs
Q: Does the 1769-L35CR support Ethernet?
A: No, this specific model uses ControlNet. For Ethernet, the 1769-L35E is required.
Q: How many expansion modules can it handle?
A: It supports up to 30 modules, but you must use expansion power supplies (1769-PA2/PB2) for every bank.
Do you need more references from this brand? Explore our full catalog of Allen-Bradley here.
This legacy CompactLogix CPU features an integrated ControlNet port; to ensure proper bus termination, remember to install a 1769-ECR right end cap.
