Alan Edwards, 30, of Stewart Close, was on parole for armed robbery when he was stopped by police in Messina Street due to having the wrong number plates fixed to his car at 2.20pm on May 28.

Police checks also revealed the car's registration to be cancelled.

Edwards was drug tested and returned a positive result for methamphetamine so he was arrested and taken to Orange Police Station for further analysis.

The analysis returned results for cannabis and methamphetamine.

"I smoked last night," Edwards said about the positive drug test.

On Monday, Magistrate David Day convicted him without further penalty in Orange Local Court for driving with drugs in his system and he disqualified Edward's driver's licence for six months.

Edwards was unrepresented and appeared in court via an audio visual link from jail.

Mr Day said the disqualification was the minimum mandatory term he could give for the offence.

"He's currently bail refused on a serious matter, I note he's still on parole," Mr Day said.

"He's not helped by his driving record."

Edwards was fined by police for having the wrong number plates fitted to the car.

He was also convicted of a similar offence in August this year when his driver's licence was disqualified for three months.