Control device and method for escalator or pedestrian walkway

A control device for an escalator or a pedestrian walkway comprises a frequency converter and a central processing unit. The frequency converter is used for driving operation of the escalator or the pedestrian walkway, and the central processing unit is used for setting and storing configuration parameters of the frequency converter and connected with the frequency converter through a communication bus. According to the configuration of the central processing unit, when the frequency converter is powered on, whether configuration parameters of the frequency converter stored by the central processing unit are consistent with configuration parameters stored by the frequency converter is judged; if not, the stored configuration parameters of the frequency converter are downloaded to the frequency converter through the communication bus; when the frequency converter runs, a speed feedback signal is received; whether a motor practical operation speed obtained according to the speed feedbacksignal is consistent wit