OVERVIEW

Official designation: Allen-Bradley 1747-L511 (SLC 500, Controller Module)

The 1747-L511 is a modular SLC 5/01 CPU offering 1 KB of user program memory and DH-485 communication. It supports distributed control applications and handles up to 3940 discrete I/O points across the chassis.

KEY SPECS SUMMARY

Power: 5V DC backplane, 400 mA

Interfaces / Ports: 8-pin mini DIN (DH-485)

Indicators: Run, Fault, Force, BATT, Comm Status

Operating Temp: 0 to 60 degrees C

Platform / Compatibility: SLC 500 modular chassis

Limit: 1 KB memory, 3940 I/O

Lifecycle: Discontinued

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the primary communication ports included on the 1747-L511 modular controller?

A: The processor includes one DH-485 port for peer-to-peer network communication.

Wiring & Installation:

Q: What is the primary function of the DH-485 communication port on the 1747-L511 processor?

A: It is used for network communication, including programming and data exchange with other devices.

Troubleshooting & Compatibility:

Q: If the Fault LED is illuminated on the 1747-L511, what is the first troubleshooting step?

A: Check the fault table in the programming software to identify the specific error code and cause.

Replacement & Upgrades:

Q: Can the 1747-L511 be replaced by an SLC 5/05 processor without major system modification?

A: No, an upgrade to SLC 5/05 requires system updates due to different communication protocols.