1785-L11B | Allen-Bradley PLC-5 Processor with 1785-ENET Controller

Overview:
The 1785-L11B is a PLC-5/11 series processor from Allen-Bradley, designed for mid-range automation tasks. It provides network connectivity via the 1785-ENET module and supports flexible I/O expansion for industrial applications.

Technical Specifications:

• Model: 1785-L11B

• Series: PLC-5

• Processor Type: PLC-5/11 Standard Processor

• User Memory: 8 K words, battery-backed static RAM

• EEPROM Backup: Supported with 1785-ME16, ME32, ME64, ME100

• Protected Memory: No

• Maximum Total I/O: 512 points (any mix) or 384 in + 384 out (complementary)

• Maximum Analog I/O: 512 points

• I/O Scan Time per Rack: 10 ms @ 57.6 kbps, 7 ms @ 115.2 kbps, 3 ms @ 230.4 kbps

• Maximum I/O Chassis Total: 5

• Maximum Extended Local I/O Chassis: 0

• Maximum Universal Remote I/O Chassis: 4

• Communication Ports: 1 RS-232-C / 422-A / 423-A

• Expansion Ports: Control coprocessor expansion port

• Weight: 3.00 lbs (1.36 kg)

• Power Dissipation: 6.2 W

• Input Voltage: Standard PLC-5 chassis supply

• Enclosure: Rack-mounted, open-style (requires chassis)

Compatible Chassis:

• 1785-A4 / A4K

• 1785-A7 / A7K

• 1785-A10 / A10K

• 1785-A13 / A13K

• 1785-A17 / A17K (Series B)

Application Scenarios:

• Mid-range automation tasks

• Process monitoring and control

• Legacy system integration

• Networked I/O with 1785-ENET

FAQ:

• Q: Can this processor support remote racks?
  A: Yes, up to 4 universal remote racks are supported.

• Q: Is the user memory battery-backed?
  A: Yes, 8 K words are battery-backed.

• Q: Does it support EEPROM backup?
  A: Yes, compatible with 1785-ME16, ME32, ME64, ME100 modules.