Purchase now: Allen Bradley 1747-UIC USB Converter
Purchase now: Atlantechdrives provides you the 1747-UIC, the absolute most critical diagnostic and programming tool for modern automation engineers working with legacy Allen Bradley SLC 500 equipment. As modern engineering laptops entirely abandoned physical RS-232 serial and PCMCIA ports, connecting to older PLCs became a major logistical hurdle. The 1747-UIC bridges this technological gap by converting standard Universal Serial Bus (USB) from your modern PC into the proprietary DH-485 network protocol. Officially replacing the obsolete 1747-PIC, this module allows seamless RSLogix 500 programming, online monitoring, and rapid data extraction from legacy SLC 5/01, 5/02, and 5/03 processors, as well as PanelView HMIs.
Technical Specifications of the 1747-UIC
The 1747-UIC is a compact, portable interface equipped with dual outputs. It features a physical toggle switch that dictates which port is active, preventing network collision errors during connection.
- Part Number: 1747-UIC
- Component Type: USB to DH-485 Interface Converter
- PC Connection: Standard USB Type-B
- Port 1 (Serial): RS-232 via DB-9 Male connector
- Port 2 (Network): DH-485 via RJ45 connector
- Switching: Manual two-position hardware selector switch
- Compatibility: SLC 500, MicroLogix, PanelView Standard
- LED Indicators: USB OK, DH-485 TX/RX activity
Expert Tips: RSLinx and COM Port Assignment
Configuring the 1747-UIC in Windows is where most technicians get stuck. Expert Tip: When you plug the USB into your laptop, Windows assigns it a virtual COM port (e.g., COM4). You must open «Device Manager» to verify this exact COM number. Next, open RSLinx Classic. You cannot use the standard «1747-PIC/AIC+» driver, as it does not support USB. Instead, add the «RS-232 DF1 devices» driver. Select your verified COM port, choose the «1770-KF3/1747-KE» device type, and click «Auto-Configure». If the cables are seated and the physical switch on the 1747-UIC is set to the correct port, RSLinx will negotiate the baud rate and the PLC will immediately appear in your RSWho network tree.
Maintenance and Switch Selection Warnings
The 1747-UIC features two distinct output ports. If you are connecting to the bottom 9-pin port of an SLC 5/03 or a PanelView, use the RS-232 DB-9 port and set the switch to RS-232. If you are connecting to the front modular port of an SLC 5/01 or 5/02, use an Ethernet patch cable into the RJ45 port and flip the switch to DH-485. Warning: The RJ45 port on the 1747-UIC carries 24V DC network power. Never plug this port into a standard Ethernet switch or a laptop LAN port, as it will instantly destroy the IT equipment.
Frequently Asked Questions (FAQs)
Q: Will the 1747-UIC work on Windows 10 and Windows 11?
A: Yes. Modern versions of RSLinx include the necessary FTDI virtual COM port drivers to recognize the 1747-UIC natively on Windows 10 and 11 environments without needing legacy OS virtual machines.
Q: Can I use this device to program a ControlLogix processor?
A: No. The 1747-UIC is strictly designed for DH-485 networks found in the legacy SLC 500 and MicroLogix ecosystems. Modern Logix processors use USB, EtherNet/IP, or ControlNet.
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This USB-to-DH485 interface is the essential programming tool for legacy SLC systems based on the 1747-L532 processor.
