Alphacool
Alphacool 1747-UIC USB to DH485 RS485 RS232 Cable 9.8 ft
Connects USB to DH485, RS-485 and RS-232 for PLC programming with a 9.8 ft cable
- USB connectivity for legacy PLC programming
- Supports DH-485 over RS-485 and RS-232 interfaces
- 8 ft cable length for flexible panel access
- Includes CD-ROM with drivers and documentation
- Direct replacement for 1747-UIC programming cable
Industrial PLC Programming Cable
This Alphacool USB to DH485 RS485 RS232 cable connects a PC to Allen-Bradley PLCs using the 1747-UIC interface. It targets automation engineers and technicians who need to upload, download or monitor ladder logic on legacy DH-485 networks. The 9.8 ft length provides reach across typical control cabinets without excess slack.
Sustained Communication Reliability
The converter maintains stable serial signalling over long programming sessions without the signal degradation common in shorter passive adapters. Dual RS-485 and RS-232 support lets the single cable handle both network types found in older installations. A supplied driver CD simplifies initial enumeration on modern operating systems.
Verify Port And Protocol First
Confirm the target controller uses DH-485 rather than Data Highway Plus, as the two protocols are electrically incompatible despite similar connectors. Ensure the host computer has an available USB-A port and that your programming software supports the 1747-UIC command set. The package includes only the cable and driver media.
Highlights
- USB connectivity for legacy PLC programming
- Supports DH-485 over RS-485 and RS-232 interfaces
- 8 ft cable length for flexible panel access
- Includes CD-ROM with drivers and documentation
- Direct replacement for 1747-UIC programming cable
Specifications
No published specifications for this item yet.
Questions about this item
Does the 9.8 ft cable draw enough power from the USB port to run continuously without an external supply?
It is powered directly from the USB connection so no separate power adapter is needed for all-day operation.
Which COM-port drivers must already be installed on my laptop before the 1747-UIC cable will appear as a serial device?
The cable uses a standard USB-to-serial chipset; install the matching driver for your operating system and the device will enumerate as a virtual COM port.
Can I keep my legacy RS-232 panel and RS-485 network connected at the same time through this single 1747-UIC interface?
The converter supports both RS-232 and RS-485 signalling, but only one physical link is active per session; swap the connector to change between the two.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.



