Why Err Led blink on Premium PLC 57xxx plc after downloading program using PL7 pro.
Loading an application to the PLC forces it to a Cold start. After downloading the PLC the Start up is in RUN or in STOP depends on the
parameter Automatic start up in RUN as defined at the 57xxx processor configuration screen or if this is used according to the status of the
RUN/STOP input if configured. So for always starting PLC in RUN - Tick mark the option Automatic start up in RUN and un tick RUN/STOP input.