802 s/c won't run G1

I have Mathews Precision 1330 running a Siemens 802s/c. It has been sitting since new while I try to understand the controller. I have it up and operating from MDA and Auto mode but it refuses to respond (or give an error code) to a g1 command. G0 and spindle commands work normal. Referencing is normal. It doesn't matter whether I am in mda or a program it just stops at a g1 command.

Help please.