Re: [foxboro] Connecting two PLC through Plant Network
- From: Corey R Clingo <corey.clingo@xxxxxxxx>
- To: foxboro@xxxxxxxxxxxxx
- Date: Wed, 20 Jun 2012 09:54:52 -0500
I agree. If you absolutely have to use your plant network, at least use
two firewalls to set up an encrypted VPN between the PLCs. If you have
tight timing requirements you may have to use a dedicated link anyway.
Also, depending on the criticality of the application, you may want to
implement a watchdog, so if the destination PLC does not get an update
from the source PLC in a certain amount of time, some fail-safe action is
taken by the PLC logic.
Corey Clingo
BASF
From: Ken Heywood <KHeywood@xxxxxxxxxxxxxxxxxxxxxxxxxx>
To: "foxboro@xxxxxxxxxxxxx" <foxboro@xxxxxxxxxxxxx>
Date: 06/20/2012 08:50 AM
Subject: Re: [foxboro] Connecting two PLC through Plant Network
Sent by: foxboro-bounce@xxxxxxxxxxxxx
It's a dangerous practice to run process control over the general purpose
plant network. Run a separate network or secure radio link. Using the
plant network leaves you open to intended and non-intended unauthorized
access to your production system. Always connect process network to plant
network through an application gateway, firewall or secure router.
Thank You,
Ken Heywood
Calibration Laboratory Manager
PROCESS CONTROL SERVICES, INC.
Established in 1983
http://www.processcontrolservices.com
mailto:KHeywood@xxxxxxxxxxxxxxxxxxxxxxxxxx
Telephone: 734-453-0620
Wireless: 508-241-2040
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