Hi, I'm working on some project for college and i'm stuck on analog programming. Project is next: over the panel with push-buttons and a potentiometer, to a s7-300 PLC, then to the frequency converter abb acs880 which is connected to the asynchronous motor. I know how to wire everything exepct maybe potentiometer. I will show you some pictures if someone want to help me. First, this is analog input AI8x12Bit (6ES7 331-7KF01-0AB0) I address (288...303) and analog output AO4x12Bit (6ES7 332-5HD01-0AB0) O address (304...311). I used scale and unscale blocks for analog programming and i always got sf lamp. Sry on my bad english.