[nigel2000]

Our Machining centre is a mori-seiki mv45 with 0-m control, when we set our machines up, say we are at 50mm above the job datum Z50.0, the displays reads from the home position and will be something like Z-450.0, is there a parameter which we can change so it reads Z50.0, this is annoying and hard to figure where the tool actually is. can anybody please help?

[Al_The_Man]

You mean you do not use machine coordinates G54- G59?
PM sent.
Al.

[nigel2000]

yes we use G54-G59, I have just started at the company but this is the first time I have seen this, we have another machine same as this one but that reads like I am use to. when you are say 50mm above the job it reads Z50.0

[dcoupar]

According to the 0M-C Parameter Manual, parameter 0018 bit 5 controls whether the tool length compensation amount is considered in the Absolute Position display. If it's 1, try changing it to 0 (or vice-versa) and see if that fixes it.