The present invention provides a flat knitting
machine having a looping press sheet and a control method thereof, capable of simply confirming poor condition occuring at a front end of a
cam follower, capable of reliably preventing the
cam follower from being used all the time in the case of the poor condition. When a base end portion of the
cam follower is switched from a set position to a reset position, in the state that a reset
position sensor detects that the base end portion of the
cam follower has been switched to the reset position, only when a recover state detection unit detects that the front end of the
cam follower is not recovered to the reset position, occurrence the poor condition of the front end of the
cam follower is judged. If the judgement and retreat of a cam carrier to the outside of a knitting width of knitted fabric are performed simultaneously, it is judged that the cam follower is interferenced with a
yarn feeding port of a
yarn guide device, then an interference avoiding action which enables move
stroke of the cam carrier to be prolonged to a position where the cam follower and the
yarn feeding port of the yarn guide device are not interferenced is performed, and then the cam carrier is inverted.