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Alex Cheung, P.Eng OWWA Conference 2014 SCADA Screen Design Best Practices May 5, 2014
Alex Cheung, P.Eng
OWWA Conference 2014
SCADA Screen Design Best Practices
May 5, 2014
Content
• Common SCADA Screen Issues Vs Better Approaches.
• Other SCADA Screen Design Best Practices.
• SCADA/OIT Examples.
SCADA Screen Design Best Practices Page 2
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
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
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
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
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 2Train 1 Train 2
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
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
Application Examples
VFD Synchronous Transfer Control System (VSTCS)
VFD Synchronous Transfer Control System (VSTCS)
SCADA Screen Design Best Practices Page 11
VFD #1 VFD #2
Across The Line
Across The Line
#1
#2
#3
#4
Across The Line
Across The Line
Starting
VFD Synchronous Transfer Control System (VSTCS)
SCADA Screen Design Best Practices Page 12
VFD #1 VFD #2
Across The Line
Across The Line
#1
#2
#3
#4
Across The Line
Across The Line
Stopping
Application Examples
SCADA Screen Design Best Practices Page 13
Design No.1 Design No. 2 Design No. 3
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Design #1 – Screen #1
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Design #1 – Screen #4
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Design #1 – Screen #5
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Design #1 – Screen #6
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Design #2 – Screen #1
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Design #2 – Screen #2
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Design #2 – Screen #3
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Design #2 – Screen #4
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Design #2 – Screen #5
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Design #2 – Screen #6
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Design #3 – Screen #1
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Design #3 – Screen Popups
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Design #3 – PLC Network
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