Alex Cheung, P.Eng OWWA Conference 2014 SCADA Screen Design
Best Practices May 5, 2014
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Content Common SCADA Screen Issues Vs Better Approaches. Other
SCADA Screen Design Best Practices. SCADA/OIT Examples. SCADA
Screen Design Best Practices Page 2
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Layout Common Issues Fragmented Process SCADA Screens. Better
Approach Less is more. (Minimize No. of screens for a process area)
Best SCADA Screen Design Practices SCADA Screen Design Best
Practices Page 3
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Best SCADA Screen Design Practices Best Practices - Layout
Maintain the common navigation menu on the top or at the bottom of
all screens. Centre all pipes and evenly space out objects.
Intuitive. SCADA Screen Design Best Practices Page 4
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Format Common Issues Inconsistence on Color / Font / Device
Graphics. Missing Device Tags. Better Approach Maintain standard
and object library. Use library on all projects. Best SCADA Screen
Design Practices SCADA Screen Design Best Practices Page 5
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Security Common Issues Security is done by blocking access to
other screens. Making complete different screens for different
level of access. Better Approach Security should be done at the
tags, push buttons and setpoints levels. Best SCADA Screen Design
Practices SCADA Screen Design Best Practices Page 6 After
Logon
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Networking Common Issues Multiple standalone package systems
controlled on its own OIT. Better Approach Each OIT shares the same
program and able to control all the package systems. Best SCADA
Screen Design Practices SCADA Screen Design Best Practices Page 7
Train 1 Train 2 Train 1 Train 2
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Best SCADA Screen Design Practices Other Best Practices Use
Dynamic Pop-Up for instrument and equipment control. Avoid Ladder
Logic & Heavy Computation in SCADA. SCADA Screen Design Best
Practices Page 8
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Best SCADA Screen Design Practices Other Best Practices Cont.
Include function or separate screens to separate historical alarms
and active alarms. Utilize one master clock and synchronize in
SCADA & PLC. Include all analog and digital instrument readings
in the historical trends. Include the system status on SCADA such
as PLC Status (Stop, Run or Fault). Communication Status &
Heartbeat Between other PLCs SCADA Screen Design Best Practices
Page 9
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Application Examples VFD Synchronous Transfer Control System
(VSTCS)
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SCADA Screen Design Best PracticesPage 11 VFD #1 VFD #2 Across
The Line Across The Line #1 #2 #3 #4 Across The Line Across The
Line Starting
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VFD Synchronous Transfer Control System (VSTCS) SCADA Screen
Design Best PracticesPage 12 VFD #1 VFD #2 Across The Line Across
The Line #1 #2 #3 #4 Across The Line Across The Line Stopping