Abstract: A multimode electronic brake monitor system for use with power driven machinery having an absolute shaft encoder input for determining the position of a rotating or reciprocating member of the machinery, wherein both upstroke and downstroke preset allowable braking times are provided. In a normal mode of operation, the brake monitor system monitors each and every cycle of operation of the associated power driven machine and provides a precise measurement and a direct reading display of machine braking time in milliseconds. Automatic shutdown of the monitored power driven machine occurs should the measured braking time exceed either of two preset allowable braking times. In a thumbwheel mode, the brake monitor system is used to initiate a braking sequence at a presettable machine shaft angle whereupon either braking times in milliseconds or in degrees of shaft angle are measured and displayed.