Allen-Bradley 1747-PIC is an RS-232 to RS-485 interface converter for SLC 500 systems that bridges a PC serial port to a DH-485 network used by Allen-Bradley SLC 500 processors and PanelView terminals. As an external converter, it translates between RS-232 serial data and the DH-485 protocol, enabling PC-hosted software to communicate with DH-485 devices on the SLC 500 network. Typical use cases include configuring, monitoring, or programming SLC 500 PLCs (such as the 5/03 and 5/04) and PanelView HMIs over a DH-485 link, using a PC's serial port and a DH-485 network. Connection details commonly involve a 9-pin to 25-pin adapter (1747-C10) to link the PC and the network.
