There are no support files specifically for the Sokkia range of survey instruments. However, it is possible from within LSS to configure the system to handle 'SDR-type' coding such as special codes to start or end a string, or the codes used to create rectanges, or join the current point to the previous one.
In LSS 'Configure Hardware & System' configure a 'Sokkia' logger. If you are using Sokkia coding then the following dialogue will allow you to enter the control codes which your on-board software uses to define such things as start and end of strings, rectangles and control. LSS will then convert these into LSS-compatible codes when the data is imported. Use these options if you can not use the standard LSS coding method.