The 1785-L80C is a robust ControlNet programmable controller from Allen-Bradley. It offers 100K user memory, supports 3072 I/O, and operates reliably in harsh environments. Ideal for complex automation tasks.
Product Procurement & Buyer Guide
Procurement specialists value the 1785-L80C for its massive 100-kiloword user memory and battery-backed RAM. This capacity handles large logic programs without performance loss. The controller supports up to 3072 mixed I/O points, or 3072 inputs plus 3072 outputs complementary. That flexibility reduces the need for multiple processors.
It uses the ControlNet network to exchange data with drives, I/O racks, and HMIs efficiently. The maximum I/O chassis count reaches 93 with up to 32 remote chassis per link. Network speed hits 5 Mbps on the RJ‑45 NAP port, and update times range from 2 to 100 ms. This ensures deterministic control even in large distributed systems.
The 1785-L80C integrates with DH+ and remote I/O networks at 57.6, 115.2, and 230.4 kbit/s. It also supports a ControlNet hot backup cartridge (1785‑CHBM) for redundancy. Engineers can select 2‑slot, 1‑slot, or ½‑slot addressing modes for 1771 I/O modules.
Environmental tolerance is critical for factory floors. The controller operates from 0 to 60 °C and 5% to 95% relative humidity without derating. It withstands 2G vibration at 10–500 Hz and 30G shock. These specs ensure long service life in high‑vibration areas.
Expert Technical Evaluation & Performance Review
The 1785-L80C delivers a program scan time of 0.5 ms per K word in bit logic and 2 ms per K word for mixed logic. This speed supports fast machine sequences and tight loop control. The internal clock offers ±5 minutes per month accuracy at 60 °C.
I/O scan times vary with network speed: 10 ms at 57.6 kbit/s, 7 ms at 115.2 kbit/s, and 3 ms at 230.4 kbit/s. This minimizes delays for high‑speed processes. The controller dissipates only 59 BTU/hour, keeping panel temperatures low.
Memory backup uses battery‑backed static RAM. An optional EEPROM backup (models 1785‑ME16,‑ME32,‑ME64,‑M100) protects programs during power loss. The module draws 3.3 A at 5 V DC from the backplane.
Network cabling reaches 1000 m with 2 nodes or 250 m with 48 nodes. Using a repeater extends the line to 6000 m with 2 nodes. This topology suits large plant‑floor layouts. All certifications—CE, UL, CSA, C‑TICK—confirm global compliance.
Logistics & Standard Packaging Details
Express delivery shipping is available via FedEx, UPS, and DHL.
