1. MAIN 222 Industrial Controllers
Introduction to PLCs
MAIN 222
Industrial Controllers
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2. Introduction Why Automate?
At the end of this lesson you will be able to define PLC definitions and simple operations of a PLC.
What is difference between Relay Logic and PLC logic
Where is it used
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3. Why Use A PLC Gain Complete Control Achieve Consistency
Improve Quality and Accuracy
Work in Difficult Environment
Increase Productivity
Lower Cost to make Product
Control Inventory
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4. What Makes A PLC Work
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5. Vocabulary Memory Inputs Outputs I/O Address Status Table
See p1-6 of Series 90 Micro Workshop
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6. Vocabulary Normally Open Contacts
Normally Closed Contact
PID
Scan Time
Register
Flash Memory
See p 1-7 Series 90 Workshop
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7. GE Specific / Digital Terms
Super Cap
PWM
SNP
P/S
Byte
Word
And Or
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8. PLC Configurations Integral or a shoebox or small brick sized device
Series 90 Micro GE Fanuc PLc
Advantages less expensive small
Disadvantages not repairable
limited I/O
limited I/O types
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9. PLC Configurations Modular I/O cards fit in a rack
Series or Series 90-70GE Fanuc PLC
Advantages repairable , flexible
Disadvantages expensive, larger in size
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10. Summary There are many different types of PLCsGE
Allan Bradley
All must use the same common micro controller system of working
All use digital controls bits to address and register information
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11. Where to Get More Information
Series X Student Guide
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