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Changing the serial port baud rate
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CAMBOARD Electronics
If this BME is equipped with a redundant controller, the primary and
redundant controllers must be configured for the same RS-232/RS-422
communications baud rate.
The Matrix 12800 controller boards are factory configured for 9600 baud rate on the
RS-232/RS-422 port. Change the RS-232/RS-422 baud rate of the controller board
as follows:
1.
If changing the baud rate of an installed board, open and remove the front
door.
2.
If changing the configuration of an installed board, turn the left and right
knurled knobs on the fan assembly door ¼-turn counterclockwise. Raise the
door and rest it on the roof of the power distribution enclosure.
Do not touch the electronic components or the connectors on the power
CAUTION
distribution plane or on the circuit boards without being electrically
grounded. Handle circuit boards by their edges only. ESD can damage
ICs, even if you cannot feel, see, or hear it.
3.
Set DIP switches 1 and 2, on the rear edge of the controller board (figure 6-9),
to the positions for the desired baud rate. See the table in figure 6-9 for switch
positions.
The controller board is shown removed for clarity, but the board does not need
to be removed.
S
W
1
S
W
2
Rate
Off
Off
f
115200 baud
On
Off
f
38400 baud
Off
On
19200 baud
On
On
9600 baud
Baud Rate
Selection
DIP Switches
(1 and 2)
Figure 6-9 — Serial port selection DIP switch
4.
If you changed the configuration of a board that is installed, close the fan
assembly door and turn the left and right knurled knobs ¼-turn clockwise.
Ensure that you close and secure the fan assembly door when you have
CAUTION
finished this maintenance procedure. The Matrix 12800 may overheat
otherwise.
5.
If you changed the baud rate of a board that is installed, close the front door.
Tel. 07131 911201
Matrix 12800 Switchers • Upgrades and Maintenance
Fax 07131 911203
Controller
Board
ce-info@camboard.de
6-11
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