1. PLC системийг маш олон компаниуд гаргадаг:
 Siemens,
 Allen Bradley,
 Omron,
 Schneider,
гэх мэт
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2. 52

3. S7-200 configuration
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4. S7 200 family
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5. S7-200 configuration
inputs
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6. S7-200 configuration
outputs
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7. S7-200 configuration
I/O numbering
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8. Analogue I/O
= Typical analogue signals from 0-10 VDC or 4-20 mA
= They are used to represent changing values such as
temperature, weight and level
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speed,

9. Instructions
Standard instructions:
They are used in most programs.
Examples: timer, counter, math, logical, incr., decr. and move
Special instructions:
They are used to manipulate data
Shift, table, conversion, real time instruction.
High speed instructions:
They allow for events and interrupts to occur independently of
the PLC scan time.
Examples: High speed counters and interrupts
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10. Input Instructions
Bit Logic instruction
Normally Open contact
Normally Closed contact
Normally Open Immediate contact
Normally Closed Immediate contact
Positive Transition contact
Negative Transition contact
Not contact
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