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Since its release in 1981, the FX Series compact PLC has evolved for over a quarter century, providing solutions to customers from a diverse range of industries. With its proven track record of outstanding quality and reliability, the FX Series continues its tradition of excellence as the world's compact PLC of choice.
The FX family contains several independent yet compatible controllers:

Coming from a history of pioneering controllers the FX series continues to build on its cornerstone principles:
Ease of use - Control systems that require minimum setup, keeping program development times to a minimum.
Flexible - Open communication, analog, high-speed and positioning control options allows the FX series to mold to almost any application.
Affordable - High performing yet cost sensitive controllers make advanced control solutions a reality for smaller applications.
Customer Confidence - A host of industrial certifications and over 9 million PLCs sold worldwide makes the FX series the controller of choice.
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Model
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FX1S
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FX1N
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FX3G
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FX3U
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FX3UC
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Power Supply
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100–240 VAC,
24V DC
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100–240 VAC,
12 - 24V DC
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100–240 VAC
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100–240 VAC, 24V DC
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24V DC
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Maximum I/O
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30
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128
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256 (w/CC-Link)
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384 (w/CC-Link)
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384 (w/CC-Link)
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Digital I/O
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Relay/Transistor
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Relay/Transistor
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Relay/Transistor
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Relay/Transistor
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Relay/Transistor
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Cycle Period/ logical instruction
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0.55μs
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0.55μs
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0.21μs
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0.065μs
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0.065μs
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Memory
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2k steps
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8k steps
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32k steps
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64k steps
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64k steps
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