Haas Alarm: 187 (M) B SERVO ERROR TOO LARGE – Too much load or speed on B-axis motor. The difference between the motor position and the commanded position has exceeded Parameter 159. The motor may also be stalled, disconnected, or the driver failed. The servos will be turned off and a Reset must be done to restart. This alarm can be caused by problems with the driver, motor, or the slide being run into the mechanical stops. On machines with servo based tool changer chains, the chain was unable to move. On Machines with servo based tool changer arms, the arm was unable to move, possibly due to a stuck tool.