From: Andy Peters
Sent: Fri Nov 03 12:52:54 2017
To: tbc@industrialsystems-inc.com
Cc: Gerald Fisher; Ryan Hepler; Jason Clifford; Jeff Mccrum; Jon Randall
Subject: Aqueritrol plc
Importance: Normal
Hello Troy,
As you know our Aqueritrol doser went belly up last week. Your low voltage folks (John) was out yesterday looking at available space on our WTP scada PLC, under instructions to look in to moving the Aqueritrol’s program logic from the DirectLogic plc into our Scada, and eliminating the Aqueritrol setup entirely.
Good news is, we swapped out the DirectLogic PLC and the Aqueritrol is working again. The program was available on an EEPROG chip on the CPU.
Bad new is, the program is password protected with a 4 digit int and westech won’t give it to me. Something about “intellectual property” and blah blah. So I can’t alter it, give it to you, or even save it in a safe source control location.
I’m thinking it’s probably going to be a nasty job for you trying to duplicate that Aqueritrol’s job without seeing the program, it’s not as simple as ons offs and a few timers. And since we are up and running again I’d say we should probably just skip it for now. Unless John or Mark have any ideas.
The takeaway for all of us is that in our new plant (which westech is specifying for us now!) it will be writing into the contract documents that there will be no proprietary ladder logic loaded on our PLCs anywhere and no passwords. That should help both you and me in the future!!
Thank you,
Andy Peters
City of Molalla
Public Works Operations Supervisor
(503) 829-6855 x220
Cell: 503-793-0507
117 N Molalla Ave
Molalla, OR 97038