3401 bits 4 (MAB) and 5 (ABS)

MAB Switching between the absolute and incremental commands in MDI
operation
0 : Performed by G90 or G91
1 : Depending on the setting of bit 5 (ABS) of parameter No.3401
ABS Program command in MDI operation
0 : Assumed as an incremental command
1 : Assumed as an absolute command