What are the key differences between the FX5U and the older FX3U series, and is the FX5U a direct replacement?
The FX5U is the next generation of Mitsubishi's compact PLC line, offering significant advancements over the older FX3U series. Key differences include substantially faster processing speeds (up to 150 times faster for basic instructions), built-in Ethernet port for enhanced communication and iQ-R compatibility, integrated analog I/O (voltage input/output), and expanded high-speed counter and pulse output functions.While the FX5U is designed as the successor, it's not always a direct plug-and-play replacement due to changes in I/O addresses, module compatibility, and programming software. FX3U programs can typically be converted to FX5U using GX Works3, but a full review and potential modification of the program and wiring are often required for a smooth migration
What programming software is used for the FX5U series, and is it compatible with previous Mitsubishi PLC software versions?
The Mitsubishi FX5U series is primarily programmed using GX Works3, which is part of the iQ Works software suite. GX Works3 offers an intuitive, integrated engineering environment that supports various programming languages (Ladder Diagram, Structured Text, SFC, etc.) and greatly simplifies system design and debugging. While GX Works3 can open and convert projects from older software like GX Works2 and GX Developer, direct compatibility is limited. It's recommended to use GX Works3 for all FX5U programming to leverage its full capabilities and ensure optimal performance. Projects from older FX series PLCs will require conversion within GX Works3 to be compatible with the FX5U.
Can the FX5U series be easily integrated with other Mitsubishi automation components like HMIs and servo systems?
Yes, the FX5U series is designed for seamless integration within the Mitsubishi Electric automation ecosystem. Its built-in Ethernet port (Ethernet/IP and Modbus TCP/IP compatible) allows for straightforward communication with Mitsubishi GOT series HMIs (like GOT2000), other PLCs, and even third-party devices. For motion control, the FX5U has integrated high-speed pulse outputs (up to 4 axes at 200 kHz) and can easily connect to Mitsubishi MELSERVO servo amplifiers (e.g., J4, J5 series) for precise positioning. With the addition of expansion modules, the FX5U's connectivity and control capabilities can be further extended to handle more complex integrated systems