Allen-Bradley 1785-L80C15 PLC-5 ControlNet Processor

Product Description

The Allen-Bradley 1785-L80C15 PLC-5/80C processor is a high-capacity controller designed for complex automation systems. It supports extensive I/O, multiple communication protocols, and redundancy features, making it ideal for mission-critical industrial applications.

Technical Specifications

• Manufacturer Allen-Bradley

• Category PLCs

• Product Line PLC-5

• Part Number 1785-L80C15

• Weight 3.00 lbs (1.36 kg)

• Processor Type PLC-5/80C

• Maximum User Memory 100 Kwords

• Memory Modules Supported 1785-ME32, 1785-ME64, 1785-M100

• EEPROM Backup Supported with 1785-ME16, -ME32, -ME64, -M100

• Battery Allen-Bradley 1770-XYC (for battery-backed static RAM)

• Program Scan Time 0.5 ms per Kword (bit logic), 2 ms per Kword (typical)

• Maximum I/O Capacity 3072 points (any mix of input/output)

• Analog I/O Capacity 3072 forcible, 50,176 non-forcible channels

• Maximum I/O Chassis Supported 125 total, 60 via Universal Remote I/O

• I/O Scan Time per Rack ControlNet: 0.5 ms average; Universal Remote I/O: 10 ms at 57.6 kbps, 7 ms at 115.2 kbps, 3 ms at 230.4 kbps

• Hardware Addressing 2-slot, 1-slot, 1/2-slot addressing supported

• Module Location Installed in 1771 chassis (A1B, A2B, A3B, A3B1, A4B), left-most slot

• I/O System Compatibility Bulletin 1771 I/O, 1794 Flex I/O, 1746 I/O, 1791 I/O (supports 8-, 16-, 32-point and intelligent modules)

• Communication Ports Data Highway Plus (DH+), Remote I/O (RIO), Serial, DH (via 1785-KA), two ControlNet ports, RS-232-C/422-A/423-A

• Expansion Control coprocessor expansion port included

• Controller Redundancy Supported

• Protected Memory Not available

Application Scenarios

• Large-scale process automation requiring high I/O density

• Redundant control systems for mission-critical operations

• Integration with legacy Allen-Bradley 1771 I/O systems

• High-speed communication networks using ControlNet and DH+

FAQ

Q: Does the 1785-L80C15 support redundancy?  A: Yes, redundancy is supported for critical applications requiring failover protection.

Q: What memory options are available?  A: Up to 100 Kwords user memory with optional EEPROM backup modules.

Q: Which communication protocols are supported?  A: DH+, RIO, ControlNet, RS-232, and DH (via 1785-KA).

Comparison with Similar Models

• 1785-L40C15: Lower memory and reduced I/O capacity.

• 1785-L60C15: Mid-range option with moderate I/O support.

• 1785-L80C15: Highest capacity in the PLC-5 ControlNet series, designed for large-scale automation.