Product Overview

The Allen-Bradley 1769-ASCII functions as a dedicated specialty communication processor for CompactLogix and MicroLogix 1500 control systems. It provides two fully independent, isolated serial channels that bridge the gap between your PLC and peripheral ASCII devices. By executing complex string manipulation and buffering locally on the module, the 1769-ASCII frees up critical CPU cycles, maintaining fast controller scan times. We supply this module as 100% Brand New and Original factory-sealed equipment.

Technical Specifications

The 1769-ASCII utilizes high-speed internal circuitry to manage asynchronous data streams without compromising backplane stability.

Engineering Advantages

• Optimized CPU Performance: The module offloads all string parsing and FIFO buffering. This architecture prevents "jitter" in your control logic caused by intensive serial data processing.

• Superior Noise Immunity: 710V DC dielectric isolation between the serial channels and the system backplane protects your CompactLogix rack from ground loops and field-side electrical surges.

• Hardware-Level Flow Control: Integrated RTS/CTS handshaking prevents data loss during high-speed transmissions with industrial printers or vision systems.

• Flexible Distance Rating: The module supports a 4-slot distance rating from the power supply, offering significant layout flexibility in dense control cabinets.

FAQs

• What peripheral devices does the 1769-ASCII typically support?

  It interfaces seamlessly with barcode readers, electronic weigh scales, RFID scanners, industrial inkjet printers, and most vision system controllers using standard ASCII strings.

• Can I use both channels for different baud rates simultaneously?

  Yes. Each channel operates independently. You can configure Port 1 for a 9600 bps barcode scanner while Port 2 manages a 38.4k bps printer link.

• Does this module require external power?

  No. The 1769-ASCII draws its operating power directly from the CompactLogix backplane. Ensure your power supply budget accounts for the 425 mA current draw.

• Is this a current-generation product?

  Yes, we provide the 1769-ASCII in 100% Brand New condition, fully compatible with current Studio 5000 and RSLogix 500 programming environments.