The 1747-OS302 is a dedicated firmware/operating system upgrade kit for Allen‑Bradley SLC 5/03 programmable logic controllers. This kit includes an upgrade memory chip that replaces the existing operating system on the processor. Upgrading your SLC 5/03 processor to OS302 firmware provides access to anomaly fixes and added functionality, ensuring your legacy control system remains reliable and up‑to‑date. Please note that this product has been discontinued by the manufacturer, but it remains essential for maintaining older SLC 500 installations.
The 1747-OS302 kit is specifically designed for the SLC 5/03 processor family. It is important to verify your current processor firmware version before purchasing this upgrade.
Compatible Processors: This kit upgrades SLC 5/03 processors. Specifically, it is designed for use with processors that require an operating system upgrade to OS302.
Firmware Upgrade: The 1747-OS302 updates the processor firmware to OS302 Series C. Later revisions, such as FRN 8, have been released to address functional issues in earlier Series C versions (FRN 5, FRN 6, or FRN 7).
Installation Note: During the upgrade process, the ladder logic program inside the processor is erased. Therefore, you must save your user program before beginning the installation.
Proper installation is critical for a successful firmware upgrade. Follow these instructions carefully to avoid errors.
Pre-Installation: First, save the current user program to your hard drive, a memory module, or a 1747-PSD Program Storage Device. Then, remove the communication cable between the processor and your programming terminal.
Jumper Settings: Before installing the upgrade, check the operating system write‑protect jumper (J4). The processor must accept the firmware download. After completing the download, move the J4 jumper back to the protected position.
Installation Procedure: Remove the processor from the chassis and carefully install the firmware upgrade chip. Reinsert the processor and apply power. The download process takes up to 2.5 minutes. The LEDs will indicate the progress, with the RS232, DH485, FORCE, and BATT LEDs turning on and off in a walking bit sequence.
Post-Installation: After a successful download, these four LEDs remain on together. If the FLT LED turns on with a combination of other LEDs, refer to the troubleshooting information in the user manual. Finally, apply the enclosed firmware upgrade label to the processor nameplate for future reference.
Your order includes the firmware upgrade chip and necessary documentation. All items are packaged securely to prevent electrostatic discharge damage.
Packaging List:
1 x 1747-OS302 Operating System Upgrade Card
Firmware Upgrade Label
Shipping: We use FedEx, UPS, or DHL to provide fast and reliable global delivery.
Q1: Which processors are compatible with the 1747-OS302?
The 1747-OS302 is specifically designed for the SLC 5/03 processor. It upgrades the operating system to OS302 firmware. It is not compatible with SLC 5/04 or SLC 5/05 processors.
Q2: Will upgrading the firmware erase my existing program?
Yes. The user program is cleared as part of the firmware upgrade process. Therefore, you must save your ladder logic program before starting the installation.
Q3: How long does the firmware download process take?
The download process typically takes up to 2.5 minutes. During this time, the RUN and FLT LEDs remain off while the other four LEDs (RS232, DH485, FORCE, and BATT) cycle in a walking bit sequence.
Q4: What should I do if the FLT LED turns on during installation?
If the FLT LED turns on with a combination of other LEDs flashing, an error condition exists. First, verify the J4 jumper is in the correct position. Refer to the troubleshooting information in the installation instructions for specific error codes and recommended actions.
Q5: Is the 1747-OS302 still available from the manufacturer?
No, the 1747-OS302 has been discontinued by Allen‑Bradley. However, it remains available through surplus and aftermarket suppliers for legacy system maintenance and upgrades.
| Brand Name | |
| Model No. | 1747-OS302 |
| Product Type | Operating System Upgrade Kit |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
The Allen‑Bradley 1747‑M15 is a memory adapter socket designed for the SLC 500 platform. It serves as the essential interface between a commercial PROM programmer and the 1747‑M13 memory module. This adapter is compatible with SLC 5/03, 5/04, and 5/05 processors, enabling convenient program erasing and programming.
The Allen‑Bradley 1747‑M13 is a flash memory module designed for the SLC 500 platform. It provides 64KB of non‑volatile backup storage for program and data tables. This module is fully compatible with SLC 5/03, 5/04, and 5/05 processors, ensuring your critical logic is preserved during battery failures.
The Allen‑Bradley 1747‑OS401 is a firmware upgrade kit for the SLC 5/04 processor. It expands the instruction set to include advanced math, trigonometric, and data manipulation functions. This upgrade significantly enhances programming capabilities for complex process control applications.
The Allen‑Bradley 1747‑SDN is a DeviceNet scanner module for the SLC 500 platform. It interfaces SLC processors (5/02 or later) with DeviceNet devices. Supporting up to 63 nodes at 125 Kbps, this module offers polled, strobe, change-of-state, cyclic, and pass-through communication modes.
The Allen‑Bradley 1762‑L40AWA is a MicroLogix 1200 programmable controller with 24 AC inputs and 16 relay outputs. It operates on 120/240V AC power and supports DF1, DH‑485, ASCII, and Modbus protocols. This compact PLC is ideal for small to medium control applications requiring reliable performance.
The Allen‑Bradley 1762‑L40AWAR is a MicroLogix 1200 programmable controller with 24 AC inputs and 16 relay outputs. It operates on 120/240V AC power and features dual communication ports supporting DF1, DH‑485, ASCII, and Modbus protocols. This compact PLC is ideal for small to medium control applications.
The Allen‑Bradley 1762‑L40BWAR is a MicroLogix 1200 programmable controller with 20 standard 24VDC inputs, 4 fast 24VDC inputs, and 16 relay outputs. It operates on 120/240V AC power and features dual serial ports supporting DF1, DH‑485, ASCII, and Modbus protocols. This controller suits high‑speed counting and precision automation tasks.
The 1762‑L40BXB is a compact MicroLogix 1200 controller from Allen‑Bradley. It features 24 inputs, 16 mixed outputs, a 24V DC power supply, and an RS232 port. This unit supports memory expansion and real‑time clock modules, making it versatile for small‑scale automation tasks.
Explore the Bently Nevada 200350-11-00-00 accelerometer, an IP68-rated vibration sensor designed for demanding industrial applications. Learn about its key specs, applications, and how SpareTechPLC ca
Bently Nevada 31000 Series Rack Mount Monitor Guide Product Introduction The Bently Nevada 31000-16-10-15-040-03-02 is a high-density monitoring system. It accepts inputs from various proximity probes and accelerometers. This specific…
Bently Nevada 31000 Rack Mount Power Supply – Installation & Maintenance Guide Product Introduction The Bently Nevada 31000-00-00-00-082-03-02 is a dedicated power supply module. It fits into standard 19-inch racks.…
Explore the Bently Nevada 200350-12-00-CN accelerometer, a robust vibration sensor for industrial machinery. Key specs include 100 mV/g sensitivity, IP68 rating, and wide frequency range. Ideal for pr
Fast delivery for urgent requirements.
Large stock ensures immediate availability.
Authentic, high-quality PLC components.
Reliable support to clients worldwide.