Allen-Bradley 1785-LT3 PLC-5/12 Processor Module

FAQ

Q1. What is the 1785-LT3 used for?
It is a PLC-5/12 processor used for small-to-medium industrial automation control tasks.

Q2. Is it a CPU or communication module?
It is a CPU (processor module), not a communication interface.

Q3. How much memory does it have?
It has 6K words of SRAM for program and data storage.

Q4. What communication networks does it support?
It supports DH+, Remote I/O, and serial communication (RS-232/422/423).

Q5. What is its I/O capacity?
Up to 512 I/O points total, depending on configuration.

Q6. What chassis does it use?
It installs in a 1771 I/O chassis system.

Q7. Does it support remote I/O?
Yes, it supports up to 32 remote I/O racks.

Q8. Is it still in production?
No, it is a legacy PLC-5 controller used mainly for maintaining existing systems.

1785-LT3 Allen Bradley

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