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3.3.1.2 Tools / Baud Rate for SCI port
Click ‘Tools’ / ‘Baud Rate for SCI port’ to see the current baud rate for the
RS232/RS485 serial port. It may be changed to some values between 19,200
and 115,200. (The baud rate for the USB need not be defined – usually it is
921,600.)
The change will take effect only after card reset. The current
b/r used by the board for the serial communication is shown for a while on
the LED display upon card reset, prefixed by ‘Sb’ (=Serial baud rate). Do
not mix the serial b/r with the b/r shown in the Communication box – they
are not necessarily the same: The b/r in the Communication box specifies the
actual b/r in which the Settings utility is communicating with the card. If the
Settings utility communicates with the card through a serial port, the two b/r
values will indeed be the same. However, in case the Settings utility
communicates with the card through a USB port, the b/r displayed in the
Communication box will be usually 921,600, regardless of the serial b/r.
Note: Normally, the b/r in the board side will be the same as the b/r in the
PC side. However, it does happen that the communication is successful only
when the PC sets the b/r to some
other value. (This anomaly might occur
only with the serial communication, not when using USB.) You may find
out the required b/r in the PC side by watching any of the supplied utilities
(Calibration, Settings or Monitor): upon the initialization they try to
communicate with the board with various values of b/r.