When you perform a M53 vertical spindle was a tool.The process is not complete.
How to remove the tool that the spindle was empty?
Brought manually the mechanism of replacement of the tool to its original position.
When you run the M53 when I click the tool in the tool changer gripper.
When executing M77 - capture tool remains closed.
Err 116 tool chang. pos. incorr. at mag. run