The following is FREE software and useful only with the Series B 900-CONVZ25 or Series B 900-CONVU25 RS232/USB to RS485 converter modules

Features
The Virtual COM Port USB Driver allows using the Series B (or later) Bulletin 900-CONV communications converter configured for USB mode, to communicate through a Personal Computer’s (PC) serial USB communication port with Bulletin 900 temperature controllers equipped with RS485 communication, when using 900BuilderLite (for enhanced 900-TC8 and 900-TC16) or 900Builder™ ( for 900-TC32) application software in the PC. The device even supports a notebook PC. However, there are some software applications that cannot be used. The Virtual COM Port USB Driver is the software tool which, along with the Series B(or later) Bulletin 900-CONV, enables a Personal Computer (PC) to communicate with multiple Bulletin 900 Temperature Controllers (equipped with RS485 communications). The PC communicates through its integrated serial USB communication port, into the Bulletin 900-CONV and out of the Bulletin 900-CONV as a RS485 communications device. The applications level software used in the PC is the 900BuilderLite or 900Builder™ Operating Environment

 Applicable PC Operating Systems
 Windows 98™ including the Second Edition, Me, Windows 2000™, and XP developed by Microsoft™ Corporation.
 It is not applicable on Windows 95™ and Windows NT™.

Notes

• This driver is not compatible with a software application that accesses the COM port directly such as MS-DOS and 16-bit applications, or an application directly operating the control signal of RS232C, etc.
• This driver may not communicate due to the performance deterioration if the CPU power of the PC is insufficient.
• This driver cannot handle the standby and the suspend state.
• Refer to the Bulletin 900-CONVx Installation Manual for proper configuration of the hardware.
  

Follow the directions for "Configuration of Driver Files" (Section 3) and "Driver Installation In Your PC" (Section 4) contained in the document "Virtual Com Port Driver Installation"

If you understand the information, then download the following ZIP file to your PCs Desktop.

900-CONVx25_USB_Driver_Installation_Win2000.zip

900-CONVx25_USB_Driver_Installation_Win98.zip