Allen-Bradley 1784-PKTX
Allen-Bradley 1784-PKTX
Allen-Bradley 1784-PKTX
Allen-Bradley 1784-PKTX
Allen-Bradley 1784-PKTX
Allen-Bradley 1784-PKTX
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1784-PKTX

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The Allen-Bradley 1784-PKTX is a PCI-based Data Highway Plus communication card designed for industrial networking with PLC and SLC systems. It enables reliable data transmission, diagnostics, and network management through DH+ and DH-485 communication channels.
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Technical specifications for 1784-PKTX

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1784-PKTX
  • Product Family:
    PLC-5
  • Product Type:
    Data Highway Plus PC Card
  • Stock:
    1
  • Card type:
    Remote I/O peripheral component interconnect
  • Class:
    Peripheral component interconnect PCI card
  • Communication Ports:
    DH 485
  • Controls/Indicators:
    Operating Network Status
  • Form Factor:
    None (open-style)
  • Number Of Channels:
    1
  • Power Supply:
    PCI Bus Slot
  • Wiring Category:
    2 - on communications ports
  • Bus communications:
    Local PCI (2.3 compliant)
  • LEDs:
    1 diagnostic/status LED per channel
  • Number of modules per system:
    4 maximum (specified by jumper on card)
  • Operational Temperature:
    0 to 60°C (32 to 140°F)
  • Storage Temperature:
    -40 to 85°C (-40 to 185°F)
  • Relative Humidity:
    5 to 95% non-condensing
  • Vibration:
    2g @ 10-500Hz
  • Operating Shock:
    30g
  • Power Dissipation (for the PKTXD):
    4.0W 800ma @ 5Vdc
  • Isolation voltage:
    Tested to 500Vac for 60 sec
  • Weight:
    0.1 kg
  • Estimated shipping dimensions:
    2x17.8x12.6cm
  • Tariff Code:
    4202129000
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Use Cases Communication Compatibility

Features:

  • PCI-based industrial communication interface supporting Data Highway Plus and DH-485 networks
  • Plug-and-play configuration with dual-port memory for efficient data transmission and diagnostics
  • Compatible with PLC-5, SLC processors, and ControlLogix systems via 1756-DHRIO integration
The Allen-Bradley 1784-PKTX plays an important role in bridging PC-based systems with traditional Allen-Bradley industrial controllers. It enables communication over Data Highway Plus and DH-485 networks, supporting integration with PLC-5 and SLC processor families. This makes the 1784-PKTX suitable for industrial environments where legacy systems remain in operation alongside modern control platforms. Its PCI-based architecture allows installation directly into standard industrial computers. As a result, it provides a practical solution for maintaining connectivity across mixed-generation automation systems.

In operational use, the 1784-PKTX handles data transmission, network diagnostics, and communication management through dual-port memory architecture. The system relies on RSLinx software to coordinate data exchange between the host PC and connected industrial devices. This ensures stable communication performance even in complex network configurations. The 1784-PKTX can function as a remote I/O scanner, expanding its role beyond simple data exchange. Its flexibility supports both programming and real-time monitoring applications in industrial control environments.

From a system integration perspective, the Allen-Bradley 1784-PKTX supports multiple connection methods, including direct PLC links and multi-node DH-485 networks. It can be connected to PLC-5 processors using dedicated cabling or integrated into SLC networks through link couplers and daisy-chain configurations. The card supports up to four modules per system, allowing scalable communication setups. With robust environmental tolerance and PCI plug-and-play configuration, the 1784-PKTX delivers reliable performance in continuous industrial operation scenarios.

The 1784-PKTX Allen-Bradley Data Highway Plus PC Card may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1784-PKTX Data Highway Plus PC Card Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Allen-Bradley 1784-PKTX Data Highway Plus PC Card Specs

General

  • Manufacturer Allen-Bradley
  • Model 1784-PKTX
  • Condition New Original ready stock
  • Product Family 1784-PKTXD
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Traditional Workshop Upgrade Monitoring (SCADA): In the renovation of old factories, this connects the new industrial PC in the central control room to the PLC-5 production line that has been running for many years for centralized data acquisition.
  • PLC Programming and Debugging Workstation: Technicians use portable industrial computers or desktops equipped with this card to upload, download, and debug programs for the entire plant's SLC 500 controllers online via a DH+ network.
  • Main Computer Remote I/O Scanner: In specific open control systems, the industrial PC is virtualized as a remote I/O scanner, directly controlling remote 1771 or 1794 I/O frames via a RIO network.
  • Heterogeneous Network Data Gateway: In large-scale distributed system architectures, it serves as the physical core of the protocol conversion gateway, responsible for bridging the communication gap between the old DH+ network and the new plant-level Ethernet (EtherNet/IP).
  • Dual-channel heterogeneous network: Supports independent or simultaneous configuration of Data Highway Plus (DH+), DH-485, and general-purpose remote I/O (RIO) networks on a single card, enabling multi-protocol physical layer bridging.
  • High-speed backplane switching: Enables high-frequency data exchange with industrial PCs (IPCs) via a standard PCI bus interface, seamlessly delivering data frames from the field industrial network layer to system memory.
  • Token ring network arbitration: Features a built-in dedicated communication processor that automatically participates in node ordering, token passing, and occasional collision detection in the DH+ token ring network architecture.
  • Dynamic baud rate adaptation: The physical channel is fully compatible with the DH+ network standard's 57.6 Kbps, 115.2 Kbps, and 230.4 Kbps transmission rates, and supports software switching via hardware jumpers or drivers.
  • Smooth Integration with Legacy Systems: Allows modern Windows-based industrial PCs to directly access older PLC-2, PLC-3, PLC-5, and SLC 500 series legacy controller platforms.
  • Multi-Generation Driver Backward Compatibility: Perfectly compatible with the proprietary 1784-PKTX(D) driver package built into the RSLinx Classic software, providing a stable DDE/OPC data communication interface.
  • Standard PCI Slot Specification: The hardware adopts a low-profile physical card structure conforming to the PCI standard, allowing direct insertion into industrial computers with traditional 5V or 3.3V universal PCI expansion slots.
  • Third-Party Software Access: Supports not only Rockwell's own FactoryTalk software but also provides physical layer hardware access for standard-compliant third-party SCADA monitoring systems and Human Machine Interfaces (HMIs).
Description
The Allen-Bradley 1784-PKTX is a PCI communication interface card built for integration into industrial computer systems, enabling connectivity with Data Highway Plus and DH-485 networks. It operates as a remote I/O peripheral component interconnect device, providing a single communication channel for industrial data exchange. With its PCI bus compatibility and plug-and-play design, the 1784-PKTX is automatically configured by the system BIOS, eliminating the need for manual switch or jumper settings. This makes it suitable for PC-based industrial control and programming environments.

The 1784-PKTX supports communication with multiple Allen-Bradley controller families, including PLC-5, SLC 5/04, and other SLC series processors through DH-485 networks. It can also connect to ControlLogix systems via a 1756-DHRIO module and function as a remote I/O scanner in distributed control architectures. Data handling is managed through dual-port memory, while RSLinx software coordinates data transmission and reception. This architecture allows the Allen-Bradley 1784-PKTX to maintain stable and efficient communication across industrial networks.

In terms of system performance, the 1784-PKTX is designed with a PCI Bus Specification 2.3 compliant interface and supports a single communication channel with one diagnostic LED per channel. It operates with a power dissipation of 4.0 W and draws 800 mA at 5V DC from the PCI bus slot. These electrical characteristics ensure stable operation within standard industrial PC environments. The 1784-PKTX also supports up to four modules per system, depending on jumper configuration, enabling scalable network expansion.

The Allen-Bradley 1784-PKTX is built for industrial reliability, with operating temperature support from 0 °C to 60 °C and storage tolerance from -40 °C to 85 °C. It withstands vibration up to 2g and operating shock up to 30g, making it suitable for demanding control environments. Relative humidity tolerance ranges from 5% to 95% non-condensing, ensuring stable performance in varied conditions. These environmental capabilities allow the 1784-PKTX to maintain dependable communication in continuous industrial operation.

From an installation perspective, the 1784-PKTX connects to PLC-5 processors using a 1784-CP13 cable or to DH-485 networks through link couplers and daisy-chained cabling structures. It can also be connected directly to SLC processors using a 1784-CP14 cable for point-to-point communication. This flexibility allows integration into both simple and complex industrial network topologies. The 1784-PKTX therefore serves as a versatile communication bridge between PC-based systems and legacy Allen-Bradley controllers.
Revisions

Revision Part #

Also known as

1784-PKTX Ser A
1784-PKTX/A, Series A, Rev A
1784-PKTX Ser B
1784-PKTX/B, Series B, Rev B
Alternative Names
1784PKTX 178A-PKTX 178APKTX 17B4-PKTX 17B4PKTX I784-PKTX I784PKTX 1784-PKTXD
Technical notes
The Allen-Bradley 1784-PKTX PCI communication card supports DH+ and DH-485 networking, operates at 4.0 W power dissipation, and provides plug-and-play configuration with automatic BIOS-assigned system resources.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What are compatible controllers for use with the 1784-PKTX?
The 1784-PKTX supports PLC-5, PLC-5/250, and SLC 5/04 processors, and SLC 5/01, SLC 5/02, and SLC5/03 processors (only via 1785-KA5).
What communication networks can Allen-Bradley 1784-PKTX support in industrial systems?
Allen-Bradley 1784-PKTX supports Data Highway Plus and DH-485 networks for communication with PLC-5 and SLC controller families.
How does Allen-Bradley 1784-PKTX handle system configuration during installation?
Allen-Bradley 1784-PKTX uses PCI plug-and-play functionality, allowing automatic assignment of IRQ and memory addresses by the BIOS.
Why does Allen-Bradley 1784-PKTX use dual-port memory architecture?
Allen-Bradley 1784-PKTX uses dual-port memory to manage data transmission and diagnostics between the host system and industrial networks.