Ok - I've read your 2 earlier questions, and they're not very clear, but what i think you're asking is this: "I left work early, having signed/clocked in for the full day, got caught, and have been suspended - is this legal?"
If that's indeed what you're asking, then yes, it's legal, and you should count yourself lucky you weren't sacked. Anyone who checks my answers will note that I usually have a pro-union 'lefty' attitude - it's how I was brought up. However, with rights come responsibilities, and no matter how you dress it up, the situation above is fraud, and attempted theft. You left early with a view to getting paid for work you didn't do.