Posted 2 February (edited) Hi, It is my first time to use Mitsubishi PLC and HMI. When I power up the MHI, It shows "system is wired incorrectly! Please change phase sequence!" see the pictures i posted. I checked the power is ok about 120Vac. The communication cable is ok. it is rs422. anyone met the situation or know where is wrong? I am looking forward to your answer asap. thanks a lot Edited 2 February by daniel999 post a picture Share this post Link to post Share on other sites
Posted 5 February (edited) 2nd post with the same question Edited 5 February by Gambit Share this post Link to post Share on other sites
