The Allen-Bradley 1785-L20C15 is a robust PLC-5 Controller designed for seamless integration into complex control systems. This enhanced controller is well-suited for ControlNet phase 1.5 networks, enabling efficient communication and real-time data exchange across multiple devices via its built-in communication ports. With versatile connectivity options, including a dedicated DH+ port and a configurable remote I/O port, the 1785-L20C15 ensures flexible control and monitoring capabilities. The controller supports substantial memory accommodations with a user memory size of 16,000 words and can handle an impressive total of 32,000 I/O. Additionally, it features a three-position key-switch for convenient mode changes and offers compatibility with an EEPROM module for program backup. This feature-rich controller makes it ideal for demanding industrial applications requiring reliable and high-throughput performance.
Technical specifications for 1785-L20C15
Manufacturer
Rockwell Automation
Brand
Allen-Bradley
Part Number/Catalog No.
1785-L20C15
Module Type
ControlNet PLC-5 Processor
Processor
PLC-5/20C
Max User Memory Words
16 Kilowords
Battery-Backed Static RAM
Yes
EEPROM Program Backup Option (using 1785-ME16, -ME32, -ME64, and -M100)
Yes
Protected Memory
No
Max Total I/O
Forcible 512 (any mix) or 384 in + 384 out (complementary), Nonforcible 3200
Max Analog I/O
Forcible 512 and Nonforcible 32000
I/O Scan Time Per Rack
ControlNet I/O 0.5 ms (average); Universal Remote I/O 10 ms at 57.6 kbits/s, 7 ms at 115.2 kbits/s, 3 ms at 230.4 mbits/s
