Control device and setting device for sewing machine, and sewing machine

A setting device of a control device for a sewing machine, the sewing machine configured to:

• perform sewing on a sewing workpiece by, in response to up-and-down movement of a sewing needle with an upper thread passed therethrough, entwining the upper thread around a lower thread paid out from a rotary hook;
• and cause a stitch to be formed in a desired direction on the sewing workpiece by displacing a holding member, holding the sewing workpiece, relative to a needle drop position, the control device including a processor configured to:
• determine whether or not a next-stitch forming direction belongs to a predetermined area in which a hitch stitch will be undesirably formed;
• and, upon determination that the next-stitch forming direction belongs to the predetermined area, perform detour control to move the holding member in such a manner that the holding member is caused to detour in a direction corresponding to perfect stitch quality and then move to a target position corresponding to the next stitch, the setting device comprising:
• an operation device that variably sets, by a user's manual operation, conditions for the detour control to be performed by the processor.