We try and make programs as fool proof as possible, but there are some very talented fools to deal with. Accordingly, you always have to be mindful of switching back to the correct Absolute/Incremental Mode when working with both. However, with controls that use G90/G91 to specify Absolute/Incremental Mode respectively, whichever of these G Codes is specified last will determine the Modal State for Absolute/Incremental Mode. With a Lathe control that uses specific axes addresses for Absolute and Incremental, neither Absolute, nor Incremental is truly Modal. It is actually possible, just not as probable to use as with a Lathe. I should qualify the following statement made in my previous Post The same rules apply for changing to the correct Absolute/Incremental for the Blocks following the execution of the above Lathe Command Block. The following example is for a Fanuc Lathe Control that is set to use G Code System B, or C. If the next Block were to be an Absolute move, you would have to ensure that it contained G90, as the example Block above will leave the control in Incremental Mode. The above Block will Linear Interpolate to the Absolute Position of X100.0 and move Y-50.0 from the Y position prior to executing the Block. There are other makes of controls that use G90/G91 to specify Absolute/Incremental Mode.įollowing is an example of using Absolute and Incremental in the one Block with G90/G91. Accordingly, you always have to be mindful of switching back to the correct Absolute/Incremental Mode when working with both.Īlthough G90/G91 are primarily used with Mill Controls to specify Absolute and Incremental Mode, Lathes with Fanuc Controls set to use G Code System B, or C also use the same G Codes.
Click to expand.It is actually possible, just not as probable to use as with a Lathe.
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