The Allen-Bradley 1785-L40B/E PLC-5/40Processor Module is a PLC-5 series programmable logic controller. It features 48K words of user memory, supports extensive I/O configurations, and includes multiple communication ports for industrial automation networks.

Technical Data Summary

Model: 1785-L40B/E, a PLC-5/40 series programmable logic controller by Allen-Bradley.

Memory: Provides 48K words of user memory with battery-backed static RAM.

I/O Capacity: Supports up to 2048 I/O points in any mix, or complementary 2048 inputs and 2048 outputs.

Communications: Features four DH+/Remote I/O ports and one configurable RS-232/422/423 serial port.

System Specs: Operates at 0-60°C with a backplane current load of 3.3A, compatible with 1771-P series power supplies.

Performance: I/O scan time as low as 3 ms per rack at 230.4 kbits/s, supporting up to 61 I/O chassis.

FAQ

Q1: What is the Allen-Bradley 1785-L40B/E?

A1: It is a PLC-5/40 Series programmable logic controller designed for medium to large industrial automation applications.

Q2: What is its memory capacity?

A2: It features 48K words of user memory, expandable via optional EEPROM memory cards (e.g., 1785-ME16 to ME100).

Q3: How many I/O points can it handle?

A3: It supports up to 2048 I/O points in any combination, or a complementary configuration of 2048 inputs and 2048 outputs.

Q4: What communication interfaces does it include?

A4: It has four DH+/Remote I/O combination ports and one configurable serial port (RS-232/422/423) for versatile networking.

Q5: How many I/O racks can it manage?

A5: It can control up to 29 PLC-5 racks in total, consisting of 1 local rack and 28 Remote I/O racks.