Search results

The profibus master will not have direct access to signal modules on the profibus slave. The slave will write to a Q area and the master will read an I area and vice versa for opposite data flow, IO areas configured in profibus parameters. You will need PLC code to copy signal module data to Q...

You only need to do bit comparison, not conventional number comparison. This can all be done in three rungs. XIO and XIC most significant bits to work out which is greater, if they match then look at the next bit.