Allen‑Bradley 1784‑KTX DH+ ISA Communication Card

The Allen‑Bradley 1784‑KTX is a half‑size 16‑bit ISA bus communication interface card for industrial PCs. It connects personal computers to DH+ (Data Highway Plus) industrial network, enabling programming, monitoring and data exchange with legacy PLC‑2, PLC‑3 and PLC‑5 series controllers.

This ISA adapter card works with supporting configuration software to implement remote I/O scanning and DH+ node communication. It serves as vital aftermarket spare for maintenance, overhaul and retrofitting of legacy Rockwell automation systems in manufacturing plants.

Main Specifications

• Brand: Allen‑Bradley (Rockwell Automation); Model:1784‑KTX; Type: ISA Bus DH+ Communication Card
• Bus Interface: 16‑bit ISA / EISA half‑size card; Network Protocol: DH+ (Data Highway Plus) / DH‑485
• Compatible Controllers: PLC‑2, PLC‑3, PLC‑5 series programmable logic controllers
• Function: PC‑to‑DH+ network access, PLC programming upload/download, remote I/O scanning, real‑time data acquisition
• Feature: ISA slot installation, DH+ network node support, industrial anti‑interference design, ESD‑sensitive component
• Installation: Install into 16‑bit ISA expansion slot of industrial‑control PC chassis
• Operating Environment:0℃ ~ +60℃, 5%‑95% RH non‑condensing
• Certifications: CE compliant for industrial automation communication applications

Core Functions

• Turn industrial PC into an active node on DH+ network for connection with legacy Allen‑Bradley PLC hardware.
• Support PLC program upload‑download, parameter modification and real‑time status monitoring for PLC‑5 and older controllers.
• Implement remote I/O scanner function to read‑write field I/O device data across DH+ fieldbus network.
• Cooperate with supporting industrial configuration software to realize data collection and upper‑computer monitoring.
• Provide stable high‑speed data channel to ｒｅｐｌａｃｅ low‑efficiency RS‑232 serial communication links.
• Standard ISA half‑size board structure, convenient for replacement during legacy‑system maintenance work.

Application Scenarios

• DH+ network communication adapter for legacy Allen‑Bradley PLC‑2 / PLC‑3 / PLC‑5 automation control systems.
• PC communication spare‑part for production‑line retrofitting and equipment‑maintenance of old‑generation Rockwell installations.
• Retrofit and spare replacement for legacy 1784‑KTX communication‑card industrial‑hardware upgrade projects.
• Legacy‑system overhaul, DH+ network debugging and faulty ISA‑communication‑card replacement tasks.
• Spare‑parts inventory for automation‑system integrators and manufacturing‑plant engineering contractors.

• Global aftermarket spare supply for technical teams maintaining vintage Rockwell DH+ network‑based automation hardware.