The 1785-L80E is a powerful Allen-Bradley PLC5 processor. It manages complex industrial control tasks with precision. This controller supports 100K words of user memory. It excels in discrete, analog, and PID control loops. The 1785-L80E is built for large-scale automation systems.
Expert Technical Evaluation & Performance Review
This processor uses 100K words of battery-backed SRAM. It maintains programs via the 1770-XYC battery module. The controller supports EEPROM backup modules. These include the 1785-ME16, 1785-ME32, and 1785-ME64. This design ensures reliable program retention during power loss.
The unit handles a maximum I/O of 3072 points. It supports both any mix and complementary configurations. The processor scans remote I/O racks very quickly. At 230.4 kbps, it scans a rack in only 3 ms. This speed enables deterministic control of fast machinery.
The 1785-L80E offers three I/O addressing modes. The 2-slot mode works with 8 and 16-point modules. The 1-slot mode handles 8, 16, and 32-point modules. The half-slot mode offers ultimate flexibility for any module. This allows engineers to optimize chassis slot usage.
Environmental ruggedness defines this controller’s design. It operates reliably from 0 to 60 degrees Celsius. The unit tolerates 5 to 95% non-condensing humidity. It withstands 30G of operational shock. Vibration resistance is 1G at 10-500 Hertz. These specs suit demanding factory floor environments.
Product Procurement & Buyer Guide
Procurement teams must match this controller with a compatible chassis. The 1785-L80E installs in the leftmost slot of a 1771 I/O chassis. It draws a backplane current of 3.6A at 5 VDC. The unit dissipates 65 BTU/hour of heat during operation. Ensure your power supply meets these requirements.
Consider the required communication networks for your application. This model features one dedicated 15-pin Ethernet port. It includes two combo DH+/Remote I/O ports. These ports act as either an adapter or a scanner. It also has one RS-232-C, 422-A, or 423 serial port. This allows connection to older and modern networks alike.
The processor supports a maximum of 24 I/O racks. It can manage up to 65 I/O chassis links total. This controller is certified by CSA, CE, and UL standards. It also holds C-TICK certification for global use. This compliance simplifies procurement for international projects.
Select the correct memory module for your backup needs. The controller works with 1785-ME16, ME32, ME64, and M100 modules. These lithium battery modules store your program safely. This ensures quick recovery after a memory loss event.
Logistics & Standard Packaging Details
