7-5
Okuma America Corporation
LatheLathe
LatheLathe
Lathe
Rev. 8-21-01
PR ZERO OFFSET
This is the zero offset of the NC turret axis. If the encoder on a NC turret is changed, the
PR ZERO OFFSET has to be reset.
1. With the machine on, verify at which station the turret in question is clamped. If the
turret is not clamped, turn on the parameter which allows movement of the turret with
the pulse handle.(OPB 40.2 for A turret, OPB 40.3 for B turret) Position the turret so
it will clamp.
2. Press the PARAMETER key, item to the “Turret Angle” page. Note the angle that
corresponds to the clamped station.
3. Press the item key until SYSTEM PARAMETERS can be viewed. Press the page key
until T-AXIS can be viewed.
4. Make sure the correct turret is selected and move the cursor to PR ZERO OFFSET.
5. Press {F1}(SET) function key and press the WRITE key (this sets PR ZERO OFF
SET to zero).
6. Press the {F5}(BACKUP) function key.
7. Turn power OFF and back ON.
8. Go back to PR ZERO OFFEST for the turret, press the {F3} (CAL) function key and
enter the angle value which was noted in step 2 then press the WRITE key.
9. Press the {F5} (BACKUP) function key.
10. Turn the power OFF and back ON.
11. Manualy index the turret, then index the turret to each position with MDI or AUTO.
(the positions will be “fine tuned” if indexed in Auto mode )
Optional Parameter (long word)
Optional parameter long words are parameters whose value can be higher than the deci-
mal equivalent of a 16 bit word which can be 5 digits or higher in length. An example of
this type of parameter would be for chuck and tailstock barrier dimensions.
Optional Parameter (Word)
Optional parameter word parameters are used to control miscellaneous operations such as
chuck open/close and spindle start/stop. These parameter values can be up to 5 digits in
length.
Optional Parameter (Bit)
These parameters control the turning on and off of functions needed for proper program
operations. Inch/metric mode would be an example of this parameter. These parameter
values are either a “1” or a “0”.
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