Problem
The Shopbot CNC does not calibrate to 0,0 properly and throws an error related to the motor or limiter sensors.
Solution
The Shopbot CNC machines are designed with a limit sensor for each axis. One of the limiters is a physical stop to keep the gantry from walking off the rails; if you hit these you will have to re-initialize the Shopbot CNC machine. The other limiter is a light sensor to assist the machine with it's 'homing' function (C3). It is important to not enter commands that are beyond the limits of these machines. For example; both of our CNC machines have a 60" Y axis and a 96" X axis beds. pushing either of these numbers beyond their limit will incur a limiter switch error.
- To resolve Limit switch issues you will need to exit out of the ShopBot 3 program and turn off the ShopBot control box to reset it's memory
- Start at the beginning with 'Part 1: Machine Calibration'