Technical Specifications Breakdown
Key parameters for the 1747-L532 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Module Type | SLC 5/03 Processor |
| Memory | Up to 16 KB, Battery Backed-RAM |
| Inputs | 4096 |
| Outputs | 4096 |
| Analog I/O | 480 |
| Program Scan Time | 1 ms/K |
| User Memory | 16,000 Words |
| Communication | DH485, RS-232 |
| Ambient Temperature | 0 to 60 degrees Celsius |
| Backplane Current (5 Volts DC) | 500 milliamps |
Real-World Applications
Material Handling Systems
With 4096 inputs and 4096 outputs, the controller easily manages conveyor routing, sorting, and palletizing. The DH485 communication port enables peer-to-peer data exchange between multiple SLC 500 processors, coordinating complex material flow.
HVAC Control for Large Facilities
Analog I/O count of 480 supports monitoring temperature, humidity, and pressure sensors across multiple zones. The built-in real-time clock and floating-point math allow precise scheduling and PID loop control for energy-efficient building management.
SCADA-Ready Distributed Control
The RS-232 port can be configured as DF1 or DH485, allowing integration with SCADA systems via a 1761-NET-AIC converter. This makes the 1747-L532 suitable for remote monitoring and control of water treatment or oil & gas applications.

Installation and Setup Guidance
Mount the processor in any slot of an SLC 500 chassis. Ensure the backplane current draw does not exceed 500 mA at 5 Volts DC. For communication, configure the RS-232 port default settings (19.2 Kbaud, DF1 Full-duplex, CRC error check) using RSLinx auto-config mode. The DH485 port defaults to 19.2 Kbaud with node address 1. Use the 1747-BA battery for memory backup; a front-panel LED indicates battery status.
Maintenance and Reliability
Operate the controller in clean, dry environments within 0 to 60 degrees Celsius. The battery-backed RAM retains user programs during power loss; replace the 1747-BA battery every 2-3 years or when the LED indicates low charge. Periodically inspect the chassis and connections for dust or corrosion.
The Evolution of Compact Control: SLC 5/03
Industrial automation has evolved from massive relay panels to compact, powerful programmable logic controllers. The Allen-Bradley SLC 500 series represents a pivotal step in this journey, offering modular flexibility without sacrificing performance. The 1747-L532 SLC 5/03 Processor exemplifies this balance, delivering robust control in a small footprint for applications like material handling, HVAC, and small process control.

Compatibility and Integration
The processor supports remote I/O via a scanner module and DeviceNet scanner module for distributed I/O configurations. It works with up to 3 I/O chassis and 30 module slots. The backup memory (1747-M13) allows automatic program loading on power-up, protecting against data loss.
Selection Guide and Purchasing Advice
When selecting a replacement or upgrade, verify that the 1747-L532 meets your I/O count and memory requirements. AutoDCSTech stocks genuine Allen-Bradley modules with full traceability. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | 1747-L532 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
