Yaskawa YASNAC PC NC Programming Manual - Manual (Page 80)

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YASNAC PCNC Programming Manual Chapter 3: Movement Control Commands
G43, G44, and G49 can be specified only in the mode called by the G code (G00, G01, or
G60) in 01 group. If they are specified in other modes such as G02 or G03 mode, an error
occurs.
(b) H code for designating the direction of offset
The direction of offset is determined by the sign of tool offset amount, specified by an H
code, and a G code.
Table 3.4.2.2 Sign of Tool Offset Amount and Direction of Offset
FIGURE 3.4.2.1: Tool Position Offset Function
Sign of Tool Offset Amount (H code)
Positive Negative
G43 Offset in the positive direction Offset in the negative direction
G44 Offset in the negative direction Offset in the positive direction