Logo automation networks

Automation Networks

1784-U2DHP USB to DH+

The 1784-U2DHP USB to Data Highway Plus Cable is a communications PLC programming cable connecting to Allen-Bradley Datahighway Plus (DH+) network via a USB port on the computer. It has the option to connect directly to a PLC-5 processors (other than Classic PLC-5 processors, such as PLC-5/10, PLC-5/12, PLC-5/15, and PLC-5/25) or SLC 5/04 processors. The 1784-U2DHP uses the RSLINX classic software, DF1 serial 1770-KF2 driver to communicate to PLC-5s and SLC- 5/04s on AB DH+.
1784 u2dhp usb to dh

Highlights of the 1784-U2DHP:

Replacing Legacy 1784 Cards: It is mostly  used for PLC programming with RSLINX communications with PLC-5s and SLC 5/04s on Allen-Bradley Datahighway Plus (DH+) that replaces now obsolete 1784 interface cards like the 1784-PKTx, 1784-KTX, and 1784-PCMK cards.

Software Application: The 1784-U2DHP interfaces with Rockwell Automation software, like RSLogix 5 and 500, and RSLinx Classic. These software packages facilitate the programming, data collection, and diagnostic tasks for PLCs connected via the DH+ network.

Connectivity and Speed: The device connects to a computer via a USB interface and links to the DH+ network through its 9-pin D-shell connector. It supports DH+ communication speeds of 57.6 Kbps, 115.2 Kbps, and 230.4 Kbps.

Ease of Installation and Use: The device is known for its straightforward installation process. Once the drivers are installed, the 1784-U2DHP is typically recognized by the relevant software, allowing for easy configuration.




Technical Specifications – 1784-U2DHP




Enclosure type rating

Meets IP30

Power dissipation, max

1.575 W max

Supply voltage

5.00V DC

5.25V DC, max

Supply current

125 mA

Power consumption, max

1.575 W

Isolation voltage

30V (continuous), Basic Insulation Type

DH+ to USB, Type tested at 500V AC for 60 s

Wiring category

2 – on communication ports(1)

(1) Use this Conductor Category information for planning conductor routing. Refer to Industrial Automation Wiring and Grounding Guidelines, publication 

Environmental Specifications – 1784-U2DHP




Temperature, operating IEC 60068-2-1 (Test Ad,

Operating Cold),

IEC 60068-2-2 (Test Bd,

Operating Dry Heat),

IEC 60068-2-14 (Test Nb,

Operating Thermal Shock)

0…55 °C (32…131 °F)

Temperature, nonoperating IEC 60068-2-1 (Test Ab,

Unpackaged Nonoperating Cold),

IEC 60068-2-2 (Test Bb,

Unpackaged Nonoperating Dry Heat),

IEC 60068-2-14 (Test Na,

Unpackaged Nonoperating Thermal Shock)

-10…85 °C (14…185 °F)

Relative humidity

IEC 60068-2-30 (Test Db,

Unpackaged Damp Heat)

5…95% noncondensing

Shock, nonoperating IEC 60068-2-27 (Test Ed,

Unpackaged Shock)

1000 mm (3.28 ft)

Emissions CISPR 11

Group 1, Class A

ESD immunity IEC 61000-4-2

8 kV air discharges

Radiated RF immunity IEC 61000-4-3

10V/m with 1 kHz sine-wave 80% AM from 80…2000 MHz 10V/m with 200 Hz 50% Pulse 100% AM at 900 MHz

10V/m with 200 Hz 50% Pulse 100% AM at 1890 MHz

10V/m with 1 kHz sine-wave 80% AM from 2000… 2700 MHz



ANC-100e Ethernet IP to AB's DH+ Converter

The Automation Networks ANC-100e communicates with all SCADA, HMI, PLC programming with direct Ethernet/IP access to the DH+ network and stations. 

ANC-100e has similar replacement features as the Controllogix 1756-DHRIO / 1756-ENBT, and AB 1784 Interface Cards: 1784-U2DHP, 1784-KTx, 1784-PKTx, 1784-PCMK and Prosoft AN-X2-DHRIO Converters.

$1,295 USD List. Apr 1, 2024

Overnight Shipping Available

ANC-120e USB to AB's DH+

The ANC-120e is an economical and high performance USB-to-Allen-Bradley Data Highway Plus converter interfacing major HMI, SCADA, PLC Programming packages to Devices on DH+. Its features significantly outperform AB’s 1784-U2DHP PLC Programming Cable operating at 12 Mg USB speed with the Controllogix Ethernet/IP Driver.

The ANC-120e works with all SCADA, MMI, PLC programming packages installed on your PC with USB direct access to the DH+ network and stations. These packages include RSLINX/LOGIX Classic & Enterprise with RSLOGIX 5/500, Wonderware DAServer & TCP/IO Server, Citect, and Kepware using Controllogix Ethernet/IP Drivers. 

$995 USD List. Apr 1, 2024

Overnight Shipping Available

Glossary Menu

Scroll to Top