1747-UIC Communication Interface Unit Technical Installation and Configuration Guide
Product Introduction
This Allen-Bradley interface hardware serves as the essential bridge for technicians maintaining legacy SLC 500 and MicroLogix 1000 systems. It provides a standard USB Type B port for computer connection and two secondary ports for DH-485 network access. Furthermore, this specific converter features an integrated switch to toggle between RS-232 and RS-485 physical layers. It communicates via the RSLinx software environment to establish a stable link with various programmable logic controllers. Therefore, the 1747-UIC provides a stable platform for uploading, downloading, and online editing of ladder logic. Specifically, the compact, bus-powered design eliminates the need for an external power adapter.
Core Value
This interface converter ensures maximum connectivity for field service engineers and plant maintenance teams. Firstly, the 1747-UIC internal electronics provide electrical isolation between the PC and the industrial network to prevent ground loop damage. Moreover, the hardware design promotes high compatibility with modern Windows operating systems through signed USB drivers. Maintenance teams benefit from the localized status LEDs which indicate transmit and receive activity during data transfers. Specifically, the high-speed processing logic ensures that time-sensitive communication packets are delivered without timeout errors. Therefore, users achieve consistent diagnostic performance across the entire lifecycle of the legacy control system. Besides its portability, the module replaces the obsolete 1747-PIC serial converter.
Technical Insights
The 1747-UIC architecture supports the DH-485 protocol over two distinct physical connections. It features a 9-pin D-shell RS-232 port and an RJ-45 RS-485 port for versatile cable integration. In addition, the unit operates reliably in standard industrial environments with a temperature range of 0°C to +60°C. Specifically, this hardware incorporates a slide switch to select the active output port based on the target controller's requirements. This physical selection prevents signal collisions and ensures the correct voltage levels are applied to the network. Furthermore, the integrated USB bridge handles Baud rates up to 19.2 Kbps for standard DH-485 synchronization. Consequently, the interface maintains a unified communication link even during high network traffic.
Installation & Maintenance
Successful deployment of the 1747-UIC requires the installation of the correct USB serial port drivers on the host computer. Firstly, verify that the physical switch on the side of the unit is set to either "RS-232" or "RS-485" before connecting to the PLC. You must use a standard USB cable to connect the converter to an available port on your PC. This action ensures a reliable 5V DC power supply from the USB bus for the device. Furthermore, check the "USB" and "OK" LEDs to confirm that the hardware is recognized by the operating system. If communication fails in RSLinx, inspect the "Station Number" settings to ensure there is no conflict on the DH-485 network. Finally, we ship the 1747-UIC via Fedex, UPS, or DHL.
Buyer’s Guide FAQ
What is the primary use of the 1747-UIC?
The 1747-UIC allows modern computers with USB ports to communicate with legacy SLC 500 and MicroLogix PLCs.
Does the 1747-UIC require an external power supply?
No, the unit is bus-powered, meaning it draws all necessary operational power from the computer's USB port.
Which PLC models are compatible with this converter?
It is designed for any device using the DH-485 protocol, including SLC 5/01, 5/02, 5/03, and MicroLogix 1000.
Can I use the RJ-45 and the RS-232 ports simultaneously?
No, the 1747-UIC features a selector switch that allows only one of the output ports to be active at a time.
Which drivers do I need for the 1747-UIC?
The device requires the Allen-Bradley USB-to-DH485 drivers, which are typically included with RSLinx Classic software.
