dagrizz
04-19-2002, 02:23 PM
We just noticed a strange occurance here when we do a FORWARD ECO to PCB from Power LOGIC.
We are running version 4.01 of both Logic and Power PCB. The systems that have exhibited this are running Win 98 or Win2K.
We create an ECO based on the new changes in a schematic compared to the previous Rev of the schematic. This change could be the addition of components or connection or deletions of components or connections.
When this ECO is imported into the PCB database is where the problem occurs. I have not looked at the actual ECO, only the results. The problem is that IC's or other similar components get renamed and the ECO is not implementsd correctly.
An example of this is I inserted a resistor in series with two other components by placing it near the circuit then connecting it in parralel with the wiring tool. Then I delete the pararlel connection and move this new component into place in the circuit. This part then gets renamed to a Reference Designator that is greater than the last one of its type. For this resistor if the highest number was R200, this new part would become R201. I don't let Power Logic backfill teh reference designaotrs.
I created the ECO and brought it into the PCB design. When I looked at the PCB, the traces that I expected to be ripped up were not and another Resistor on the PCB was renamed to that value of R201. When the schematic and PCB were compared through the OLE Connection had no errors. This is not what is needed.
Has any one else seemn this phenomenom? Even stranger, is that it does not happen with every ECO that I have done. It happened once out of 4 times. I am not sure of the mechanism behind this. All help would be aprecieated.
We are running version 4.01 of both Logic and Power PCB. The systems that have exhibited this are running Win 98 or Win2K.
We create an ECO based on the new changes in a schematic compared to the previous Rev of the schematic. This change could be the addition of components or connection or deletions of components or connections.
When this ECO is imported into the PCB database is where the problem occurs. I have not looked at the actual ECO, only the results. The problem is that IC's or other similar components get renamed and the ECO is not implementsd correctly.
An example of this is I inserted a resistor in series with two other components by placing it near the circuit then connecting it in parralel with the wiring tool. Then I delete the pararlel connection and move this new component into place in the circuit. This part then gets renamed to a Reference Designator that is greater than the last one of its type. For this resistor if the highest number was R200, this new part would become R201. I don't let Power Logic backfill teh reference designaotrs.
I created the ECO and brought it into the PCB design. When I looked at the PCB, the traces that I expected to be ripped up were not and another Resistor on the PCB was renamed to that value of R201. When the schematic and PCB were compared through the OLE Connection had no errors. This is not what is needed.
Has any one else seemn this phenomenom? Even stranger, is that it does not happen with every ECO that I have done. It happened once out of 4 times. I am not sure of the mechanism behind this. All help would be aprecieated.