MPG pendant(Manual pulse generator) is normally used on CNC milling machine or machining centers.

Sometimes it is not working we could check below:

1-      Parameters setting error on CNC controller.

2-      Connecting cables broken or shorted.

3-      MPG pendant is broken.

MPG pendant specification:

http://www.cncmakers.com/cnc/controllers/CNC_Accessories/MPG.html

Handwheel specification:

http://www.cncmakers.com/cnc/controllers/CNC_Accessories/MPG_Handwheel.html