Get the current FOCUS Position.
None
FOCUS_POSITION='n'
where n is the current focus position.
Valid
ADDR, PTZ_VENDOR, ZOOM, ZOOM_POSITION, FOCUS, MOVE, MOVE_LIMIT, MOVE_LIMIT_GET, MOVE_MAX_SPEED_GET, POSITION, POSITION_GET
http://ip:port/cgi-bin/encoder?USER=Admin&PWD=123456&FOCUS_POSITION
or
http://ip:port/cgi-bin/cmd/encoder?FOCUS_POSITION