DM3000 Program

Hi,
Any body willing to help with programming a DM3000 with original configuration?
When in manual mode and machining a part with dimensions entered through the controller, all works well and dimensions are accurate,but
when stepping through a very basic program and after setting up " set up----- dczx" the dimensions change for both the X and Z axis and are not compatible
with the original input eg,
Start MM 01
Tool 1
GO f X 70.00 (to allow the tail stock to be set up0
GO f Z -120.00
Set up ------dczx
Spindle on
SPD SP 1500
FR X/M = 100
FR Z/M = 200
GO X 10.80
GO z -138.10
Rec fo 06
XA 8.00
ZB -60.00
Fin 0.100
Spindle off
GO X 70.00
GO Z -120.00
End New Part

The Z axis becomes a positive value when moving back towards home????? when originally it was 0.000 and dimensions moving towards the chuck were negative.

I hope the above makes sense and I haven't messed it up.

Thanks for looking and hope reply.