Control - December 2018.pdf

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THE BUS IN WINTER
COMMON-SENSE
CYBERSECURITY
WHY WE STILL
USE MODBUS
IS AUTOMATION
A JOB-KILLER?
Lo
op
Control
Best practices for PID
DECEMBER 2018
Expansion shouldn’t be expensive.
Get more I/O for less with BRX remote I/O controllers
EBC100 Remote
I/O Controller
priced at only:
(BX-EBC100-M-D)
$249.00
DMIO Remote I/O
Controller
priced at only:
(BX-DMIO-M-D)
$159.00
MBIO Remote I/O
Controller
priced at only:
$234.00
(BX-MBIO-M-D)
Remote I/O Controllers
Don’t let high prices impede your growth. Expand your
control system, as needed, with low-cost BRX remote I/O
controllers. Thousands of additional I/O points are possible
which can be distributed all around your plant or facility.
Communication with the local controller is done via one
communication cable, eliminating costly I/O wire runs to
remote devices. BRX remote I/O controllers are ideal for use
with Do-more! systems, DirectLOGIC ERM100 modules or
any Modbus Client/Master device.
• Up to eight discrete, analog, or temperature I/O expansion
modules can be connected to each remote I/O controller
(I/O expansion modules start at
$36.50)
• Up to 63,232 I/O points possible (when using Modbus TCP)
• AC and DC powered units available
• All units have built-in Ethernet port, 10/100 Mbps
• Modbus I/O units have onboard RS-485 port with
removable 3-Pin connector
• Supported protocols: Do-more! Ethernet Remote I/O,
Host Ethernet Remote I/O, Modbus RTU and Modbus TCP
*All remote I/O controllers
are shown fully expanded
Use with: AutomationDirect BRX Ethernet MPUs/Do-more!
H2 Ethernet CPUs/Do-more! Terminator Ethernet CPUs/
DirectLOGIC H2 and H4 ERM100 modules
Use with: AutomationDirect BRX Ethernet MPUs/Do-more!
H2 Ethernet CPUs/Do-more! Terminator Ethernet CPUs
Ethernet Base Controller (EBC100)
Do-more! I/O Controller (DMIO)
Modbus I/O Controller (MBIO)
Use with: ANY Modbus RTU Master/Modbus TCP Client
www.BRXPLC.com
Order Today, Ships Today!
* See our Web site for details and restrictions. © Copyright 2018 AutomationDirect, Cumming, GA USA. All rights reserved.
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DECEMBER 2018 • VOLUME 31 • NUMBER 12
22
COVER STORY
Loop control
Best practices for PID
by Gregory K. McMillan and P. Hunter Vegas
Features
30
SUPPORT & PROTECT
35
FIELD NETWORKS
Common-sense cybersecurity
in the age of IoT
Build on tried-and-true methods with protections enabled by cloud
computing and other digitalized solutions.
by Jim Montague
Introduction to Modbus
Why the grandfather of modern fieldbus is still on the job
after 40 years.
by William L. Mostia, Jr., P.E.
CONTROL (ISSN 1049-5541) is published monthly by PUTMAN MEDIA COMPANY (also publishers of CONTROL DESIGN, CHEMICAL PROCESSING, FOOD PROCESSING, PHARMACEUTICAL MANUFACTURING, PLANT SERVICES and
SMART INDUSTRY), 1501 E. Woodfield Rd., Ste. 400N, Schaumburg, IL 60173. (Phone 630/467-1300; Fax 630/467-1124.) Address all correspondence to Editorial and Executive Offices, same address. Periodicals Postage
Paid at Schaumburg, IL, and at additional mailing offices. Printed in the United States. © Putman Media 2018. All rights reserved. The contents of this publication may not be reproduced in whole or part without
consent of the copyright owner.
Postmaster:
Please send change of address to Putman Media, PO Box 1888, Cedar Rapids IA 52406-1888; 1-800-553-8878 ext. 5020. SUBSCRIPTIONS: Qualified-reader subscriptions are
accepted from Operating Management in the control industry at no charge. To apply for a free subscription, email putman@stamats.com. To non-qualified subscribers in the Unites States and its possessions, subscriptions
are $96.00 per year. Single copies are $15. International subscriptions are accepted at $200 (Airmail only.) CONTROL assumes no responsibility for validity of claims in items reported. Canada Post International Publications
Mail Product Sales Agreement No. 40028661. Canadian Mail Distributor Information: Frontier/BWI,PO Box 1051,Fort Erie,Ontario, Canada, L2A 5N8.
www.controlglobal.com
DECEMBER 2018
• 5

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