e-mail :

Registered in England and Wales company # 03449181.
 This website does not use cookies.

 © Copyright: Conwy Valley Systems Limited  2000-2024

Conwy Valley Systems Limited,

West Acre, Llys Helyg, Deganwy

CONWY LL31 9BN, United Kingdom.

VAT# GB 741 5190 48

A Geoscience Wales  founding member.

PETROG includes patent protected technology.


Problem: SteppingStage Serial to USB Connection

Older SteppingStage control boxes are designed to be connected to a PC RS-232 serial COM port. Some PCs, especially laptops do not have these fitted as standard. We recommend that you connect a SteppingStage to a COM port, and do not support other connections.

In some cases connections have been made to USB ports using a cable and software combination to provide conversion between COM and USB. We have found that some makes of cable do not always work reliably with the SteppingStage.


This connection should work with a serial to USB converion. However it is not a supported connection. We are unable to offer a solution, other than suggesting you check your connections, ensure your USB port is working correctly. If there is not a PC fault it is likely that changing to a different conversion cable may solve the problem.

Further Support

If you require further support or advice on this problem then please follow the instructions listed on the support page.