B&B Electronics 232MSS2 manual Programming the Second Character, Programmable Character Setting

Programming the Second Character

The second character comes programmed as the ASCII STX character (decimal 2). You can change this to any 8-bit character you wish by reprogramming dipswitch “SW2”. “SW2” is an eight- position switch with each position equal to a certain weight. Refer to “Setup” for instructions on removing the cover to access “SW2”. Table 4 shows the weight chart for “SW2”.

Table 4. Programmable Character Setting

Dipswitch SW2* WEIGHT

11

22

34

48

516

632

764

8128

*Factory Default -- ASCII “STX” character (decimal 2), SW2 position 2 is only one ON.

If you wish to use the letter "U" as the second character, which has a decimal value of 85, you would turn on switches 1, 3, 5, and 7 (1 + 4 + 16 + 64 = 85). Caution should be used when selecting the second character, so that by itself, or with the ESC character in front of it, it is not a valid command to any of the devices on the port. For instance, on some printers ESC @ is the reset command. If you tried to use the @ symbol (decimal 64) for the second character you could reset your printer every time the preamble code was sent. Also, if your communication configuration is set for 7 data bits you cannot use the eighth bit of SW2. For a list of the ASCII character codes and their decimal values, refer to Appendix A.

Binary File Transfer

A simple method of using the Mini Smart Switch to transfer binary files without the concern of it accidentally disconnecting, is to set the file transfer at a different baud rate from the rate of the Mini Smart Switch. When transferring files at a different baud rate, the Mini Smart Switch will stay connected from the last preamble code.

Documentation Number 232MSS2-0108 Manual 7

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