Behind your router (electrospindle) there is an aluminum bar with either 3 or 4 sensors on it - depends on the model of machine)...if you are getting the error at the beginnning of the routing within the program...physically check to see if the sensor is lit in the down position of the router...if the error is at the end of the program check to see if the sensor is lit in the up position...if while trying to execute a tool change check to see if one of the middle sensors is lit.
Also check the program to insure there is a L=POFF at the end ( the red light icon). Email me at
ntek1@aol.com if any problems.
Mark Tomlin
www.cnccustomservices.com