PLC 5 Password

[schui 0]

Good Day All, Anyone know of class login passwords in PLC 5 program I just got landed 4 second hand machines from the States and the whole program is locked up all I can do is monitor the code, I cant edit or download Appreciate any help Thank you.

[6D Systems LLC 0]

I believe the only way to get into a PLC that's been locked is to send it to Rockwell to be reset (which will erase the program on it). You can also try to do a firmware upgrade (and use the same firmware) to wipe it out, but I don't think there is anyway to recover a lost password.

[b_carlton 61]

If you don't need the program (you have a non-passworded backup) you can pull the battery and leave it unpowered for a while (several minutes). Then power back up and download the non-passworded program. If you need the program then it must go to AB with forms to prove ownership of the program. You need a tech connect contract for this.

[schui 0]

Thanks Guys Tech Support helped out Thanks again for taking the time out to comment