Best Programming Cable Options for FX2N PLC – SC-09 Model Explained

Question:

Hello everyone, I have a FX2N PLC and I am in need of a programming cable, specifically the SC-09 model. Unfortunately, acquiring this cable is proving to be a challenge. I require the cable for transferring ladder logic from my PC to the PLC. I am exploring three potential solutions: 1. Creating a programming cable using online tutorials and resources. However, I am aware that the PLC port is RS422 while the PC port is RS232. How can I make this work? 2. Utilizing a RS485 to USB converter. Is this a feasible option and if so, how should the wiring be configured considering the PLC port is RS422? What about issues with full or half duplex communication? 3. Exploring the possibility of using a RS422 to RS232 converter. Are there any drawbacks or advantages to this approach? Please provide insights on the advantages and disadvantages of each of these options.

Top Replies

The SC-09 is a popular RS422 to RS232 converter that consists of two cables: an 8-pin mini-DIN to 25-pin D-sub RS422 cable, and a 24-pin to 9-pin D-sub on the RS422 to RS232 converter. This cable is commonly used and can be easily obtained or assembled from various sources.

Find SC09 cables on eBay that are compatible with devices using either the mini 8 pin or an adapter from 25 pin to 8 pin mini. While some have seen a resistor bodge online, I have not tried it myself. Ensure you have the necessary driver (com port) for USB clone cables - it may require a USB driver or a virtual com port. If you obtain the SC09 cable but lack a 232 com port, use a USB to 232 converter. For Windows 10/11 users, ensure your USB/232 driver has the latest chipset like the PL2303. Consider purchasing a UGREEN converter from Amazon for a reliable connection.

Looking to ship globally? Discover our top-of-the-line Mitsubishi PLC Cable USB SC09-FX MELSEC SC-09 USB-FXPLC Cables, PLC Trainers, and Industrial Automation Supplies at www.plccable.com. Additionally, we offer an RS422 option for your convenience.

Hi there, All three of your potential solutions could work, but each comes with its own challenges. Making your own programming cable might appear cost-effective, but it requires technical skill to ensure the right translation between RS422 and RS232. As for the RS485 to USB converter, yes, it can work if properly wired. The main issue is ensuring full duplex communication, as some converters only support half-duplex. Meanwhile, using an RS422 to RS232 converter tends to be the most straightforward option. It's designed specifically to bridge the difference between the two formats. The key here is to ensure you purchase a high-quality converter to avoid potential data loss. Also remember, irrespective of whichever approach you decide to go with, always ensure your connections are correct to prevent damaging your PLC or PC.

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Frequently Asked Questions (FAQ)

FAQ: FAQs:

Answer: 1. How can I create a programming cable for FX2N PLC when the PLC port is RS422 and the PC port is RS232? - You can make this work by following online tutorials and using resources that provide guidance on converting between RS422 and RS232 ports.

FAQ: 2. Is utilizing a RS485 to USB converter a feasible option for connecting my FX2N PLC?

Answer: - Yes, using a RS485 to USB converter is a feasible option. Ensure the wiring is configured properly, considering the PLC port is RS422, and be mindful of issues related to full or half duplex communication.

FAQ: 3. What are the drawbacks and advantages of using a RS422 to RS232 converter with FX2N PLC?

Answer: - The advantages of using a RS422 to RS232 converter include compatibility with different port types. Drawbacks may include potential signal interference or limitations in data transfer speeds.

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