Configured for DH+ and DH-485 communication processing in PLC-5 control networks, the Allen-Bradley 1784-KTX (1784-KTX Communication Interface Card) provides direct data exchange between ISA-based computers and Allen-Bradley controller systems.

Model Identification

The 1784-KTX is an ISA half-sized communication interface card designed for installation in 16-bit ISA or EISA expansion slots. The module supports DH+ or DH-485 network communication and provides PLC-2 / PLC-3 direct connection capability through a single communication channel.

Industrial Control Network Interface

The Allen-Bradley 1784-KTX operates as a dedicated PC communication interface for legacy PLC control architectures. The card provides DH+ and DH-485 network access through ISA bus communication, allowing computer-based applications to exchange data with PLC-2, PLC-3, and PLC-5 controllers.

The module uses a standard ISA expansion architecture and requires correct configuration of the host computer resources before installation. Network communication performance depends on the connected controller configuration, communication protocol settings, and application software compatibility.

The Allen-Bradley PLC-5 platform uses deterministic industrial communication methods. The 1784-KTX supports legacy network integration where DH+ or DH-485 communication remains part of the existing control system structure.

Ordering Information

• 1 x Allen-Bradley 1784-KTX Communication Interface Card
• 1 x ISA half-sized PCB assembly
• 1 x Factory communication hardware configuration
• Compatible host interface: 16-bit ISA/EISA expansion slot
• Additional network cables and software configuration tools are supplied separately unless specified

Field Installation Guidelines

Host Computer Installation

• Install the module only in compatible 16-bit ISA or EISA expansion slots.
• Confirm available system resources before card installation.
• Disconnect power from the host computer before inserting or removing the card.
• Maintain proper grounding between the PC chassis and control cabinet.

Communication Wiring

• Use suitable shielded communication wiring for DH+ or DH-485 connections.
• Separate communication cables from high-voltage power conductors.
• Connect cable shields according to the system grounding design.
• Verify network termination and node configuration before commissioning.

Environmental Requirements

• Install the module inside an enclosure suitable for open-style equipment.
• Maintain operation within the specified temperature and humidity range.
• Prevent condensation and conductive contamination around the PCB assembly.

Frequently Asked Questions

• What communication networks does the 1784-KTX support?

  The module supports DH+ or DH-485 communication networks for connection with compatible Allen-Bradley PLC systems.

• What type of computer slot is required?

  The 1784-KTX requires a 16-bit ISA or EISA expansion slot in the host computer.

• Can the module connect directly to PLC-2 and PLC-3 systems?

  Yes. The module supports PLC-2 and PLC-3 direct connection functions.

• How many communication channels are available?

  The 1784-KTX provides 1 communication channel for DH+ or DH-485 network operation.

• What is the operating temperature range?

  The specified operating temperature range is -25 to 60 deg C.

• Does the module support hot swapping?

  No. The ISA communication card requires the host computer power to be removed before installation or replacement.

• What power supply does the card require?

  The module operates from the host ISA bus 5 VDC supply and consumes approximately 600 mA.

• What installation precautions are required?

  Proper grounding, cable separation, and resource configuration checks are required before system startup.