Allen Bradley 1784-KTX Communication Interface Card

Product Introduction

The Allen-Bradley 1784-KTX Communication Interface Card is an industrial PC communication module designed to connect a computer to Allen-Bradley PLC networks. It supports multiple legacy industrial protocols including Data Highway Plus (DH+), DH-485, and Remote I/O, enabling engineering workstations to communicate directly with PLC-2 and PLC-3 systems.

This card is widely used for programming, monitoring, and diagnostics in legacy automation environments. It acts as a Remote I/O scanner, allowing the PC to function as a supervisory node that can read and write data across industrial networks in real time.

Built for ISA/EISA bus systems, the 1784-KTX provides reliable communication performance in industrial computing environments. Its dual-role capability for both network access and Remote I/O scanning makes it a versatile tool for maintaining older Allen-Bradley control systems.

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Product Specifications

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Applications

• PLC programming and maintenance

Enables direct communication between a PC and PLC-2 / PLC-3 systems for programming and configuration.

• Industrial network diagnostics

Used to monitor and troubleshoot DH+ and DH-485 communication networks.

• Remote I/O control systems

Acts as a scanner for Remote I/O racks in distributed control architectures.

• Legacy automation system support

Maintains and services older Allen-Bradley industrial control systems.

• Industrial data acquisition

Supports real-time data exchange between PC systems and PLC networks.

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Advantages

• Multi-protocol support

Supports DH+, DH-485, and Remote I/O for flexible legacy system integration.

• Remote I/O scanner capability

Allows the PC to function as a real-time I/O control and monitoring node.

• Direct PLC compatibility

Enables communication with PLC-2 and PLC-3 systems without additional gateways.

• Reliable industrial communication

Designed for stable operation in electrically noisy industrial environments.

• Efficient system maintenance tool

Simplifies troubleshooting and diagnostics for legacy automation systems.

• Compact and mountable design

Fits into standard industrial PC slots for easy installation and replacement.

FAQ

1. What is the main function of the 1784-KTX card?
   It enables communication between a PC and Allen-Bradley PLC systems using DH+ and DH-485 networks.
2. What PLC systems is it compatible with?
   It supports direct communication with PLC-2 and PLC-3 controllers.
3. What does Remote I/O scanner mean?
   It means the card can act as a controller to scan and manage remote input/output modules.
4. What communication protocols does it support?
   It supports DH+ and DH-485 industrial communication protocols.
5. Is it used for modern Ethernet systems?
   No, it is designed for legacy serial and industrial fieldbus networks.
6. What is the power requirement of the card?
   It consumes approximately 600 mA at 5 V DC.
7. Can it be used for programming PLC systems?
   Yes, it is commonly used for PLC programming, configuration, and diagnostics.
8. What does ISA/EISA bus mean?
   It refers to older PC expansion slot standards used in industrial computers.
9. What are common installation issues?
   Incorrect slot placement, driver configuration issues, and network wiring faults.
10. Is it still widely used today?
    It is mainly used for maintaining and servicing legacy Allen-Bradley control systems.

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