The Allen-Bradley 1747-L532 SLC 5/03 processor delivers robust control for small to mid-sized systems. This module excels in material handling and HVAC applications.
Product Procurement & Buyer Guide
Solving Your Control System Challenges
This processor provides a powerful yet cost-effective solution for your discrete and process applications. The 1747-L532 supports up to 4096 discrete inputs and outputs. It also handles 480 analog I/O points for precise process monitoring.
Key Specifications for Selection
The module offers 16 KB of battery-backed RAM memory. This provides 12,000 words for your program logic. You get an additional 4,000 words specifically for data storage. The program scan time is a fast 1 millisecond per 1K of logic.
The controller includes built-in RS-232 and DH485 communication ports. The RS-232 port defaults to DF1 full-duplex at 19.2 Kbaud. You can configure this port for peer-to-peer DH485 networking.

Deployment in Real-World Applications
Use this processor for standalone machine control or integrate it into a larger SCADA system. It executes complex instructions like PID loops, advanced math, and floating-point calculations. The module also supports a real-time clock and key-switch for local mode control.
Understanding Backplane Power Requirements
The module draws 500 mA at 5 Volts DC from the backplane. It also requires 175 mA at 24 Volts DC. Ensure your power supply meets these requirements for reliable operation.
Memory Backup and Flash Upgrade
The controller uses a standard 1747-BA battery to preserve RAM data. It also supports a 1747-M13 backup memory module. This flash memory automatically loads your program during power-up.

Deep-Dive Technical FAQ
What are the default communication settings?
The RS-232 port defaults to DF1 full-duplex with no handshaking. It uses a baud rate of 19.2K and CRC error checking. The DH485 port defaults to 19.2 Kbaud with a node address of 1.
How do I scale I/O for a mid-size system?
This processor supports a maximum of 3 local I/O chassis. You can populate these chassis with up to 30 module slots. Use remote I/O or DeviceNet scanner modules for further expansion.
Can I use flash memory for program recovery?
Yes, you can burn your user program to a backup memory module. Upon a power cycle, the controller loads the program from this flash memory automatically. This provides a robust recovery method.

Is this processor suitable for clean environments?
Yes, the device operates reliably in clean, dry industrial environments. Its ambient temperature rating is 0 to 60 degrees Celsius. The module also withstands operating shock up to 30G.
What instruction set does this controller support?
The controller uses an advanced instruction set based on the PLC-5 processor. It supports bit, timer, comparison, sequencer, and PID instructions. You can also use messaging and subroutine functions.
Logistics & Standard Packaging Details
We ship all orders via express delivery services. We partner with FedEx, UPS, and DHL for global shipping. This ensures fast and reliable delivery to your facility.

