ecom 100 and password

[Henryp]

I’m using Ecom 100 cards in various DL PLCs at our treatment plant. It appears that when a DL PLC program is password protected, the ability to write to a bit or boolean is lost. If I connect to the PLC with DS5 using a password or if I remove the password, the ability to write to the bit is restored. V memory locations seem to be unaffected and work ok. I can duplicated the issue using Kepdirect’s OPC server and quick client and with my SCADA software and its Modbus driver.

[Controls Guy]

There's a secret handshake!   

There's some rule for creating a password that still allows comms.  IIRC, you have to start the password with an "A" to allow it.  If that's not it, it's something like that.

[Controls Guy]

Or better answer.....just switch to Do-More!  Do-More allows enable/disable of all the various rights for each user class, so this isn't an issue, plus selective protection of individual code blocks.

[plcnut]

CG, you are correct: The password must start with a capital 'A' to allow write access.