The 1747-UIC is a communication interface converter developed by Allen-Bradley, part of Rockwell Automation. This device is specifically designed to facilitate connections between a computer’s USB port and Allen-Bradley SLC 500, MicroLogix, or CompactLogix controllers using the DH-485 protocol. Here are some key features and uses of the 1747-UIC:

Key Features:

1. USB Connectivity: The 1747-UIC connects to a computer via a USB port, providing an interface to DH-485 networked devices.
2. DH-485 Communication: It is designed to communicate over the DH-485 network, which is a proprietary Allen-Bradley protocol used for connecting various devices in their automation systems, including SLC 500, MicroLogix, and some CompactLogix PLCs.
3. Serial Port Emulation: The device effectively emulates a serial port connection, enabling communication with PLCs and other devices on the DH-485 network via a modern computer without a native serial port.
4. Dual RS-232 Ports: The 1747-UIC features two RS-232 ports (a 9-pin D-Shell connector and an RJ45 connector), allowing it to interface with a variety of devices.

Applications and Usage:

1. PLC Programming and Configuration: Commonly used for programming, configuring, and troubleshooting Allen-Bradley SLC 500 and MicroLogix series PLCs.
2. HMI and SCADA Systems Integration: Facilitates the integration of HMI (Human Machine Interface) and SCADA (Supervisory Control and Data Acquisition) systems with PLCs on a DH-485 network.
3. Legacy System Connectivity: Ideal for connecting legacy industrial control systems that use the DH-485 protocol to modern computers that lack serial ports.

Setup and Installation:

1. Driver Installation: Requires installation of appropriate drivers on the computer to recognize and communicate with the 1747-UIC.
2. Configuration: May require configuration of the emulated COM port settings in the software being used (like RSLinx or RSLogix) to match the communication settings of the PLC network.
3. Cabling and Connections: Proper cabling and connection to the appropriate port on the PLC or other devices are essential for successful communication.

Considerations:

• Compatibility: It’s important to ensure compatibility with the specific PLC model and the version of software being used for programming or monitoring.
• Data Transfer Rates: While sufficient for most programming and monitoring tasks, the data transfer rates are limited by the DH-485 protocol’s capabilities.

The 1747-UIC is an essential tool for engineers and technicians working with older Allen-Bradley control systems, providing a bridge between modern computers and legacy industrial networks.