Allen-Bradley 1747-OS401 SLC 500 Processor Overview

The Allen-Bradley 1747-OS401 is a processor in the SLC 500 series. This unit is compatible with SLC 5/04 architectures for seamless integration. The 1747-OS401 offers extensive instruction support for advancing process control applications. It significantly enhances programming capabilities compared to standard processors. Furthermore, it efficiently uses indirect addressing for both word-level and bit-level references. Consequently, this provides greater flexibility in handling complex data structures.

Advanced Instruction Support

The Allen-Bradley 1747-OS401 covers a wide spectrum of functionality through various instructions. It supports SCP (Scale with Parameters) for analog signal scaling. The ABS (Absolute Value) instruction handles absolute value calculations. SWP (Swap) instruction swaps bytes or words in data tables. ASN (Arc Sine) and ACS (Arc Cosine) instructions provide inverse trigonometric functions. Therefore, the 1747-OS401 performs sophisticated data manipulation and control tasks.

Mathematical & Trigonometric Functions

The Allen-Bradley 1747-OS401 enables advanced mathematical instructions for complex calculations. It includes ATN (Arctangent) for inverse tangent calculations. Cosine and sine functions are available for trigonometric operations. Tangent functions are also supported for angle-based computations. Additionally, natural logarithmic functions provide advanced mathematical capabilities. Consequently, the 1747-OS401 is vital for executing complex calculations in process control applications. The ability to accommodate these diverse function sets makes this processor a robust component in automation environments.

Indirect Addressing Capabilities

The Allen-Bradley 1747-OS401 excels in flexible data handling through indirect addressing. Word-level references can be addressed indirectly for dynamic data access. Similarly, bit-level references support indirect addressing for granular control. This flexibility allows programmers to create more efficient and reusable code. Therefore, the 1747-OS401 reduces programming complexity for large-scale applications.

SLC 5/04 Architecture Compatibility

The Allen-Bradley 1747-OS401 is specifically designed for SLC 5/04 systems. It integrates directly into existing SLC 500 chassis. The processor communicates via the DH+ network for high-speed data exchange. Consequently, it works with standard SLC 5/04 power supplies and I/O modules. The 1747-OS401 is a drop-in upgrade for applications requiring advanced math capabilities.

Key Features & Benefits

• Advanced math functions – The 1747-OS401 supports trig and logarithmic calculations.

• SCP instruction – Scale with Parameters for easy analog signal processing.

• Indirect addressing – Supports word-level and bit-level indirect references.

• SLC 5/04 compatible – Direct replacement for standard SLC 5/04 processors.

• Multiple math instructions – Includes ABS, SWP, ASN, ACS, and ATN.

• Process control ready – Ideal for applications requiring complex calculations.

Installation Guidelines

Follow these steps to install the Allen-Bradley 1747-OS401 correctly. First, power down the SLC 500 chassis completely. Second, remove the existing processor from slot 0 if present. Third, align the 1747-OS401 with the card guides in the chassis. Fourth, push the processor firmly into the backplane connector until fully seated. Fifth, secure the processor with the retaining screws at top and bottom. Finally, apply power and download your application program.

Ensure your programming software supports the advanced instructions used by the 1747-OS401. Compatible software includes RSLogix 500 version 6.0 or later. Back up existing programs before replacing the processor.

Package Contents

Your shipment includes the following items:

• 1 x Allen-Bradley 1747-OS401 SLC 500 processor module

• 1 x Installation instructions manual

No programming software is included with the 1747-OS401. Therefore, you must order RSLogix 500 separately. No communication cables are provided.

Frequently Asked Questions (FAQ)

1. What programming software is compatible with the 1747-OS401?
The Allen-Bradley 1747-OS401 requires RSLogix 500 version 6.0 or later. Earlier versions may not support all advanced instructions.

2. Is this processor compatible with SLC 5/03 systems?
No. The 1747-OS401 is specifically designed for SLC 5/04 architectures. It will not work in SLC 5/03 or SLC 5/02 systems.

3. What advanced math functions does this processor support?
The 1747-OS401 supports sine, cosine, tangent, arcsine, arccosine, arctangent, and natural logarithm. Additionally, it supports ABS, SWP, and SCP instructions.

4. Does the 1747-OS401 support indirect addressing?
Yes. The Allen-Bradley 1747-OS401 supports indirect addressing for both word-level and bit-level references. This provides greater programming flexibility.

5. What is the SCP instruction used for?
The SCP (Scale with Parameters) instruction on the 1747-OS401 scales analog input values to engineering units. It is commonly used for 4-20 mA and 0-10 V signals.

Why Choose the Allen-Bradley 1747-OS401?

This SLC 500 processor delivers advanced math capabilities for process control applications. For starters, the Allen-Bradley 1747-OS401 supports trigonometric functions including sine, cosine, and tangent. It also handles inverse functions like arcsine, arccosine, and arctangent. Natural logarithmic calculations are available for complex process models. The SCP instruction simplifies analog signal scaling to engineering units. Indirect addressing for both word-level and bit-level references provides exceptional data handling flexibility. The 1747-OS401 is fully compatible with SLC 5/04 architectures, making it a drop-in upgrade. It supports additional instructions including ABS, SWP, ASN, and ACS for diverse control tasks. Consequently, this processor is ideal for applications requiring complex calculations such as flow compensation, temperature control, and positioning. Most importantly, the 1747-OS401 enhances programming capabilities while maintaining compatibility with existing SLC 500 I/O.

Order the Allen-Bradley 1747-OS401 today for your advanced process control needs. Specifically, this processor is perfect for chemical processing, pharmaceutical manufacturing, food and beverage production, and other applications requiring trigonometric, logarithmic, or scaling calculations in a SLC 500 platform.