TwinkleBay PLC Programming Cable Compatible with 1747-UIC - DH485

In this review of the TwinkleBay PLC Programming Cable compatible with 1747-UIC, the bottom line is simple: technicians and engineers who need a straightforward USB to DH485 interface will appreciate its compatibility and practical length. The reviewer found it a reliable replacement cable for connecting programming laptops to older PLC networks that use DH-485 over RS-485 or RS-232. It is not for DH+ networks, a distinction the package clearly notes, so the main reason to buy is plug-and-play replacement compatibility for DH485 programming and diagnostics.

Key Features

• DH-485 support: Supports DH-485 communications over both RS-485 and RS-232, enabling connections to PLCs that require the DH485 protocol.
• Cable length: At about 9.8 ft, the cable provides ample reach for bench programming and wiring cabinet access without needing extensions.
• Complete package: Ships with a 1747-UIC PLC cable and a CD-ROM drive with drivers or documentation, so installers get everything to start configuring quickly.
• Replacement fit: Designed as a direct replacement for 1747-UIC style converters, reducing compatibility troubleshooting when swapping older adapters.
• Tech support: The vendor offers technical support, which helps when installing drivers or resolving interface issues.

Who It's For

The cable is aimed at industrial technicians, control system integrators, and maintenance engineers who service legacy PLC installations that communicate using DH-485 protocol. It is a practical option for anyone who needs a USB-to-DH485 interface for programming, firmware updates, or troubleshooting on systems that still use RS-485 or RS-232 layers.

It is not suitable for users who require DH+ (Data Highway Plus) compatibility or for those needing advanced protocol converters with additional networking features. If a project needs network routing, remote access, or DH+ support, look for a different adapter designed for those protocols.

Pros & Cons

Pros

• Direct compatibility with 1747-UIC style PLC programming ports, simplifying replacements.
• Generous 9.8 ft cable length provides flexibility in workshop and field environments.
• Includes a CD-ROM and vendor tech support to assist with driver installation and setup.

Cons

• Not compatible with DH+ networks, so it will not work where DH+ is required.
• The reliance on a CD-ROM for drivers may be inconvenient for systems without optical drives.

Specifications

Product name	TwinkleBay PLC Programming Cable Compatible with 1747-UIC
Protocol support	DH-485 over RS-485 and RS-232
Cable length	9.8 ft
Package includes	1 x CD-ROM drive, 1 x 1747-UIC PLC cable
Designed as	Replacement cable for 1747-UIC style converters
Technical support	Vendor offered tech support

Our Verdict

The TwinkleBay PLC Programming Cable is a sensible, cost-effective replacement for technicians who need a USB to DH485 connection for RS-485 or RS-232 PLC programming. It is good value for those maintaining legacy systems because it bundles drivers and support and avoids unnecessary features. Buyers should confirm their network uses DH-485 rather than DH+ before purchasing.

Frequently Asked Questions

Is this cable compatible with DH+ networks?
No. This cable explicitly supports DH-485 and is not compatible with DH+ (Data Highway Plus).

What is included in the package?
The package includes one 1747-UIC PLC cable and one CD-ROM drive, and the seller offers technical support.

Will this work for RS-232 connections?
Yes. It supports DH-485 communications over both RS-485 and RS-232 interfaces.