freecrowder
Member
Just a general question on basic serial comms. In most plcs that are controlling basic functions to a VFD. Start, Stop,jog etc. When i start the drive does that start bit stay latched in the PLC? So that even though the drive is running at commanded speed the start bit is still communicated to the drive? If I am monitoring feedback from the drive in the PLC and it knows that the drive is running can the start bit be turned off and the drive stays running untill I set the stop bit on another bit?