B&B Electronics GW-7433D - Manual - Manual (Page 30)

5.2 Modbus Utility
The Modbus utility includes the MBTCP and MBRTU tools. The
MBTCP is a Modbus TCP clientl with source code in VB6. The MBRTU is
a Modbus RTU master with source code in VB6. These two tools are
designed by ICP DAS and they are helpful when users want to diagnostic
the Modbus TCP server devices or Modbus RTU slaves. Users can free
download the utilty from the following web site:
http://www.icpdas.com/products/PAC/i-8000/modbus_web_download.htm
GW-7433D MODBUS TCP/RTU to CANopen Gateway User Manual 30
(Version 2.0.0, Jul/2011)