a flat frame 3 a the flat frame 3 a is assembled via a movable frame 4 a to the frame operating mechanism 5 the movable frame 4 a includes assembling portions extended in y direction the flat frame 3 a is provided with ear portions on its side portion with which the assembling portion of the movable frame 4 a is detachably engaged and the wireless tag 20 is affixed to at least one of the ear portions when the flat frame 3 a is used the resultant shorter or even minimum receiving distance make it possible for the receiving means 21 a and 21 b provided on the leg portions 1 a and 1 b of the frame to receive the information of the wireless tag 20 successfully fig6 illustrates another example of a position on which the wireless tag 20 is affixed with reference to fig1 and 6 when the cap frame 3 b is used as the embroidery frame to be assembled to the frame operating structure 5 through a movable frame 4 b the movable frame 4 b for the cap frame 3 b is shorter than the movable frame 4 a for the flat frame 3 a ref fig1 in a x direction and includes the assembling portion provided on its center portion in the x direction and the cap frame 3 b is provided with an engaging potion on its end portion with which the assembling portion of the movable frame 4 b is detachably engaged the wireless tag 20 is affixed to the cap frame 3 b on an extending portion of the fat.