OVERVIEW

Official designation: Allen-Bradley 1747-L553 (SLC 5/05, CPU Module)

This high-performance CPU module provides central control for SLC 500 systems, supporting up to 64K words of user memory and enabling extensive network connectivity for complex automation tasks.

KEY SPECS SUMMARY

User Memory: 64K words

I/O Capacity: 4096 discrete points

Communication Ports: Ethernet, RS-232, Multi-protocol

Backplane Current: 1.2 Amps at 5 Volts DC

Indicators: Four status LEDs

Operating Temp: 0 to 60 degrees C

Platform / Compatibility: SLC 500 chassis

Limit: Maximum of 30 I/O slots

Lifecycle: Discontinued

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: How many simultaneous connections can the Ethernet port support?

A: The processor can manage up to 64 simultaneous Ethernet connections.

Wiring & Installation:

Q: What power consumption does the 1747-L553 require from the backplane?

A: The module draws 1.2 Amps of current at 5 Volts DC.

Troubleshooting & Compatibility:

Q: Which protocols are supported by the serial port on the CPU module?

A: The multi-protocol port supports DH-485, DF1, and ASCII protocols.

Replacement & Upgrades:

Q: What is the maintenance requirement for the CMOS RAM memory backup?

A: The CMOS RAM utilizes a battery that must be replaced periodically.