1769-ASCII Allen-Bradley Communication Interface Module

Availability: 99 left in stock

Product Overview The 1769-ASCII is a high-performance specialty communication module for Allen-Bradley CompactLogix and MicroLogix 1500 platforms. It features two fully...

SKU: 1769-ASCII

Manufacturer: Allen Bradley
Product No.: 1769-ASCII
Product Type: Communication Interface Module
Product Origin: USA
Payment:T/T, Western Union
Weight: 180g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The 1769-ASCII is a high-performance specialty communication module for Allen-Bradley CompactLogix and MicroLogix 1500 platforms. It features two fully independent, isolated serial channels that enable controllers to interface with ASCII-protocol devices, such as barcode scanners, weigh scales, printers, and vision systems.

By offloading serial string processing from the main CPU, the 1769-ASCII ensures deterministic system performance while providing robust data exchange through its dedicated DB-9 connectors.

Technical Specifications

Specification	Details
Module Identifier	1769-ASCII
Interface Channels	2 Independent Serial Ports
Connector Type	Dual DB-9 Male
Protocol Support	Generic ASCII (Full-Duplex / Half-Duplex)
Baud Rates	User-configurable, up to 38.4 Kbps
Backplane Current Draw	425 mA @ 5.1V DC
Power Dissipation	2.13 W max
Thermal Output	7.3 BTU/hr
Isolation Voltage	30V continuous; 710V DC dielectric tested for 60 s
Input Signal Range	3–25V DC
Flow Control	RTS/CTS Hardware Handshaking
Operating Temperature	0 °C to 60 °C
Vibration/Shock	5 g @ 10–500 Hz / 30 g Operating Shock
Dimensions	118 x 34 x 87 mm
Weight	0.18 kg

Diagnostic and Status Indicators

TX/RX Indicators: Visual confirmation of data transmission and reception.
FIFO Status: Monitors the internal buffer to prevent data loss.
Error Flags: Reports FIFO overflow, RX parity errors, and handshake failures.
New Data Flag: Triggers PLC logic immediately upon receipt of a completed ASCII string.

Installation and System Limits

Mounting: Standard 1769 bus interface; 35mm DIN rail or panel mounting for high-shock resistance.
Compatibility: Works with CompactLogix 5370 controllers, 1769-AENTR Ethernet adapters, and MicroLogix 1500 bases.
Distance Rating: Must be installed within four slots of the system power supply.
Enclosure: Open-type design; use IP54 or higher rated enclosure to protect against contaminants.

Common Technical Questions

Does the 1769-ASCII support RS-485 or RS-422?
No. It is designed for RS-232. For RS-485 or RS-422, use an external signal converter or a specialized module like the 1769-SM2.
Can I program the module to parse specific string delimiters?
Yes. You can define start and end characters (e.g., Carriage Return, Line Feed) so the PLC processes only completed data packets, simplifying ladder logic programming.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.