Problems With Bus Baud Rate; Recovering A "Lost" Dcell/Dsc - Mantracourt DSC User Manual

Problems With Bus Baud Rate

There are a number of special difficulties to be considered here
• Systems with very long cabling may not work with higher baud rates
• When using an RS232/RS485 converter, it may be necessary to change some converter settings when changing
baud rate. Certain converters may not support some baud rates.
• Always remember you need to reboot devices before the change takes effect
• A bus with two devices talking at different baud rates may become unusable.
So always change all at once by powering down or issuing a broadcast reset command (RST).
Difficult problems can always be overcome, if necessary, by isolating individual devices and trying the different
baud rates in turn. This deals with all possible problems, as long as your hardware can deliver all the supported
baud rates.

Recovering a "lost" DCell/DSC

For baud rate problems, see previous section.
You can try all 3 protocols if confused (but this should be indicated by the product code on the product label, if it
has not been removed).
If a station number is unknown, it can be reset via broadcast command, as long as the device is the only one on the
bus.
If two devices on the same bus end up set to the same 'bus address', they can no longer be commanded separately:
The only solution is to remove one device from the bus and connect it exclusively to a PC to change its STN.
Always remember that a reboot (power-off or RST command) is needed to change STN and BAUD settings!
Micron Meters DCell & DSC User Manual 70