The USB-1747-CP3 cable is an industrial communication cable that has been manufactured by Allen-Bradley. It has been manufactured as part of the SLC 500 series for use with processor modules and interface modules that are also from the SLC 500 series. The USB-1747-CP3 communication cable is an essential component for installing an SLC 500 processor in addition to a medium-blade screwdriver, programming equipment, interface modules, and the processor itself. This cable is made to work specifically with the SLC 5/03, SLC 5/04, and SLC 5/05 processor modules when they are using the 1747-UIC network interface module. The USB-1747-CP3 communication cable is used to connect the interface on the processor to the USB port of a PC so that the PC can control and communicate with the processor.

The Allen-Bradley SLC 500 USB-1747-CP3 communication cable connects the Channel 0 port on the SLC 5/03, SLC 5/04, and SLC 5/05 processors. It also functions as an RS-232 program cable because it supports direct RS-232 connection to interface devices. The USB-1747-CP3 communication cable is available separately from the processors that it is compatible with as a replacement part or as an accessory. It is 12 feet or 3.92 meters long. The USB-1747-CP3 communication cable comes with 2 DTE connectors that have 9 pins each. It is compatible with a variety of DH-485 equipment such as advanced interface converters, CompactLogix controllers, FlexLogix controllers, and ControlLogix controllers. The USB-1747-CP3 communication cable supports the ASCII protocol, which allows the processors that it is used with to connect to 3rd-party devices like serial printers and PCs.