Fagor 800 T

Have a customer that has lost parameters on an Upgrade Technologies Lathe. OEM out of business. I have put in parameters and have machine running except that it will not change tools. Machine says it is executing, and in position. Tool number appears and changes on bottom right hand corner but actually does not pick up offsets or change number on position page. This is not an auto toolchanger, nor have a plc. Parameter is set for not auto toolchanger. Could it possibly M tables ? Anyone have set up for this control on regular engine lathe ?