Digital Variant – RS232 Output

 

NOTE:When connecting the Mini-OX using the RS232 connections ensure Tx goes to Rx of the PC and Rx goes to Tx of the PC.

 

The Mini-OX communicates via standard COM port settings that are default on most PCs and many other RS232 compatible devices. If communication problems are occurring, use the settings below to configure the PC or device COM Port:

 

• Baudrate:    9600

• Data bits:    8

• Parity:        None

• Stop bits:    1

• Flow control:    None

With the Mini-OX RS232 outputs connected to a PC (or other RS232 compatible device), you can access two modes of operation; continuous data streaming and the menu screens. Menu structure has been created using VT100 terminal codes; refer to APPENDIX A – MENU STRUCTURE for full menu structure and example screens.

 

Recommended programs for communicating via PC serial RS232 are Tera Term, HyperTerminal (Windows default), or PuTTY. The following sub-sections are based on Tera Term usage, instructions may vary if using another program.

 

When the Mini-OX receives an <ENTER> keystroke from the connected PC or device, it automatically displays the Menu Password screen and stops streaming O₂ % and Td values. Once the correct password is entered followed by the <ENTER> keystroke, the menu screens are accessed. The menu screens are primarily for diagnostics and information although there are user configurable options that may be changed (automatic O₂ calibration %, the amount of output filtering (averaging) and the analogue output ranges). The menu security password may also be changed if required.