Posted 28 Oct 2021 Hi Guys, How can I bring an axis into permanent control? that as soon as a value changes, the axis reacts. My Hardware FX5U, FX5SSC MR-JE-20B. Thanks a lot. Share this post Link to post Share on other sites
Posted 28 Oct 2021 you have to be a bit more specific, what do you want to achieve? as I understand it, you want an axis to track depending on a value (should a position or speed be tracked?) what is the response time, how do you control the axis (A/B phase via output or via SSCNET and positioning module?). In the simplest case monitor the corresponding value in the PLC for change and set a corresponding move command, if the normal cycle time is too slow use an interrupt for monitoring/control. Share this post Link to post Share on other sites
Posted 28 Oct 2021 Not sure with that hardware, but in other controllers I have used that was called cyclic synchronous control. Typically available in position, velocity, or torque modes. Share this post Link to post Share on other sites
Posted 29 Oct 2021 The FX5-40/80ssc-s module have inputs for synchronous encoder (or MPG). There's also synchronous encoder via CPU. With sequence program you can simulate grey code encoder. In synchronous mode operation the servo can follow the encoder position in real time. Section 2.2 from here: https://www.allied-automation.com/wp-content/uploads/2015/05/MITSUBISHI_manual_FX5-40SSC_synchronization.pdf There a few other methods like virtula servo input axis and control generation axis, but you have to be more spceific on your application... What are you trying to follow with the servo? Some kind of analog signal sensor, ultrasonic or edge position detection sensor? Share this post Link to post Share on other sites
Posted 31 Oct 2021 I have to control an analog input, it's about a voltage that is present there. As an example, the axle should go higher as soon as the Voltage is less and lower when it becomes more. Share this post Link to post Share on other sites