Product Details
Overview
The 1785-KE by Allen-Bradley is a versatile communication interface module tailored for Data Highway Plus (DH+) networks. It provides industrial networking through a DH+ port and supports point-to-point connections via RS232-C. Designed for installation in a 1771 I/O chassis, it is compatible with multiple PLC families, including PLC-2, PLC-3, PLC-4, and PLC-5. This module is discontinued by Rockwell Automation as of December 31, 2012.
Technical Specifications
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Manufacturer: Rockwell Automation
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Brand: Allen-Bradley
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Part Number: 1785-KE
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Product Type: Data Highway Plus (DH+) Communication Interface Module
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Module Type: Communication Interface
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Mounting: 1771 I/O chassis
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Compatible Controllers: PLC-2, PLC-3, PLC-4, PLC-5
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Ports:
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One DH+ port
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One RS232-C interface
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Transmission Speeds:
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DH+: up to 57,600 bps
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RS232-C: 110–19,200 bps
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Communication Cable: 1770-CD for DH+
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Max Modules per System: 4
Electrical Specifications
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Power Supply: 1.2 A at 5VDC (backplane)
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Required External Power: None
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Operating Temperature: 0°C to 60°C
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Storage Temperature: -40°C to 85°C
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Relative Humidity: 5–95% (non-condensing)
Physical Specifications
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Dimensions: 4.5 x 12.4 x 6.3 in (115 x 317 x 160 mm)
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Weight: 1.81 lbs (0.82 kg)
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Coating: Conformal coated for environmental protection
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Wiring Arm: 1771-WN
Performance Features
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Typical AC signal delay: 29 ± 8 ms
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Typical DC signal delay: 30 ± 7 ms
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LED indicators: One per channel for status and diagnostics
Applications
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Industrial PLC networks requiring DH+ communication
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Systems requiring RS232 point-to-point device connections
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Factory automation and control panel integration
FAQ
Q: Is 1785-KE compatible with PLC-5 controllers?
A: Yes, it supports PLC-2 through PLC-5 controllers when installed in a 1771 chassis.
Q: What cabling is required for DH+ communication?
A: A 1770-CD communication cable is recommended.
Q: Can this module operate without external power?
A: Yes, it draws power directly from the backplane at 5VDC.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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