Allen-Bradley 1785-L40B PLC-5/40 Processor | 48K Memory

Allen-Bradley 1785-L40B PLC-5/40 Standard Processor

Core Technical Specifications

• Brand: Allen-Bradley
• Model: 1785-L40B
• Processor Type: PLC-5/40 Standard
• User Memory: 48 Kilowords Battery-Backed SRAM
• Max I/O Capacity: 2048 points any mix or 2048 IN/2048 OUT complementary
• Max Analog I/O: 2048 points
• EEPROM Backup: Supported via 1785-ME series modules
• Protected Memory: No
• Backplane Current: 3.3A @ 5V DC
• Power Dissipation: 17.3W

Communication & Networking Features

• Network Ports: Four (4) DH+/Remote I/O combination ports
• Serial Port: 1 configurable RS-232/423/422A port
• Max I/O Chassis: 61 total
• Max Remote I/O per Link: 32 Universal Remote chassis
• Control Racks: Supports 1 local rack + 28 remote racks
• Point-to-Point: Serial port enables short-distance communication
• Network Independence: Each DH+/RIO port can run separate networks

Physical & Environmental Ratings

• Operating Temperature: 0°C to 60°C (32°F to 140°F)
• Non-Operating Temperature: –40°C to 85°C (–40°F to 185°F)
• Standards Compliance: IEC 60068-2-1, 2-2, 2-14
• Thermal Shock Tested: Operating (Nb) & Non-operating (Na) conditions
• Chassis Compatibility: 1771-A1B, A2B, A3B, A3B1, A4B

Frequently Asked Questions (FAQ)

• Q: Is this processor new and original?
  A: Yes, we supply only brand new, original Allen-Bradley 1785-L40B units.
• Q: What is the maximum I/O capacity?
  A: The 1785-L40B supports 2048 total I/O points in any mix, or 2048 inputs plus 2048 outputs.
• Q: How many network ports does it have?
  A: It features four DH+/Remote I/O combination ports plus one configurable serial port.
• Q: What memory backup options are available?
  A: Use 1785-ME series EEPROM modules (16K to 100K words) for non-volatile program storage.
• Q: How many remote I/O chassis can I connect?
  A: You can connect up to 32 Universal Remote I/O chassis per network link.
• Q: What is the shipping time?
  A: We ship within 5 business days via DHL, FedEx, or UPS from available stock.
• Q: Do you accept returns?
  A: Yes, we offer a 30-day return policy for qualified purchases.

Contact Information:

• Email: sales@nex-auto.com
• Phone/WhatsApp: +86 153 9242 9628

Authorized Partner: NexAuto Technology Limited