Most standard Topcon total stations will work configured to Topcon GTS Series.  This includes the Topcon 200,300,600,700,2000 and 3000 series instruments, and newer models such as the Topcon 230 (which uses Bluetooth wireless communication).  This driver does support the reflectorless capability of the “thousand” series instruments (Topcon 2000 and 3000, for example).  Typical baud rates for instruments in this group are 1200, E, 7, 1.

Topcon 200 Series

This is another option that can be tried when the GTS Series or other configuration does not communicate.  It uses a different speed and mode of linkage.

Topcon 300/600/700/2000

Similar to the Topcon GTS Series, these drivers offer the reflectorless option.  Typical baud rates for instruments such as the Topcon 303 and Topcon 313, for example, are 1200, E, 7, 1.

Topcon GTS 3/3B Series

This driver supports the older Topcon GTS 3 and GTS 3B standard total stations.  Some of the GTS Series Topcon instruments offer Reflectorless, and in stakeout routines and Store Points (both graphics and text modes), there is a convenient reflectorless icon at the top of the screen to turn on/off reflectorless and show current status.  (See discussion of Leica TPS above.)