Posted 30 Jun 2023 Hi guys, my site uses mainly Mitsi PLC's & HMI's so not familiar with AllenBradley but i have two Micrologixe 1200 PLC's connected to Panelview 300 HMI's. The machines are twenty plus years old and now both HMI's are barely legible as the screens are so dim. I want to upgrade the HMI's as they are obsolete but my problem is, the program within the PLC is Password Protected and i cannot read, upload or download to the PLC. The original manufacturer has been taken over some years ago and no-one knows the password. They have sent me an old program that could possibly work which is not password protected, but i cannot download it to the PLC without the original Password. Can anyone help me? Share this post Link to post Share on other sites
Posted 30 Jun 2023 No, you can't get help bypassing password on this forum. Share this post Link to post Share on other sites
Posted 30 Jun 2023 I jumped the gun locking this thread. Discussion of bypassing passwords is prohibited but you didn't ask to do that, you have a unprotected program that you are trying to put into your password protected PLC. When prompted, enter "65257636". This will clear the PROGRAM. Then you can download your new program. 1 person likes this Share this post Link to post Share on other sites
Posted 1 Jul 2023 I just tried the password "65257636" but it didn't work. The message 'Incorrect Authorisation Password' appeared. Share this post Link to post Share on other sites
Posted 1 Jul 2023 I tried connecting directly to the PLC but when it asked for Password or Master Password. I tried "65257636" but it still didn't work. Share this post Link to post Share on other sites
Posted 1 Jul 2023 Rockwell did some upgrades and the older Memory clear methods doesnt work. You know have to do a ControlFlash to wipe the Memory. 1 person likes this Share this post Link to post Share on other sites
Posted 3 Jul 2023 Thanks Jeff, not sure how to do a control flash, do i need additional software? Share this post Link to post Share on other sites
Posted 3 Jul 2023 ControlFlash and ControlFlashPlus are applications you'll find under Rockwell Software. Share this post Link to post Share on other sites
Posted 8 Jul 2023 I one time had to clear a password protected Micrologix 1000 and entered " IMLCLRMEM" for your password. Not sure if that will work for a 1200 Mike Share this post Link to post Share on other sites
Posted 8 Jul 2023 3 hours ago, mikeexplorer said: I one time had to clear a password protected Micrologix 1000 and entered " IMLCLRMEM" for your password. Not sure if that will work for a 1200 Mike Same as posted above.."65257636" https://forums.mrplc.com/index.php?/topic/13780-micrologix-1500-password/ Share this post Link to post Share on other sites
