Startup and operation
Version 1
RES-409
Page 25
All controllers manufactured up to January 2007:
9.2.5
DIP switches for setting the baud rate
All controllers manufactured as of February 2007:
The following baud rates can be set for the CAN bus with the four-pole DIP switch:
The "AutoBaud" function (automatic baud rate detection) only works if the RES-409 controller is installed in a CAN
network in which valid CAN messages are exchanged by at least two nodes. If the controller has already
successfully "listened in" on a maximum of 8 CAN messages since being started up, it should by now have
identified the correct baud rate and be capable of participating in the bus traffic. Until the correct baud rate is
detected, the controller only plays a passive role on the CAN bus and has no influence on communications.
The "NETWORK STATUS" LED (red) and the "MODULE STATUS" LED (green) blink (alternately) as
long as the "AutoBaud" function is active.
If the baud rate for the CAN network is changed while the controller is operating, it must be switched
off and then on again in order to reactivate the "AutoBaud" function.
Baud rate
DIP-4
DIP-3
DIP-2
DIP-1
AutoBaud
(factory
setting)
OFF
OFF
OFF
OFF
1MBaud
OFF
OFF
OFF
ON
800kBaud
OFF
OFF
ON
OFF
500kBaud
OFF
OFF
ON
ON
250kBaud
OFF
ON
OFF
OFF
205kBaud
OFF
ON
OFF
ON
125kBaud
OFF
ON
ON
OFF
100kBaud
OFF
ON
ON
ON
50kBaud
ON
OFF
OFF
OFF
20kBaud
ON
OFF
OFF
ON
3
8
2
9
1
10
4
7
5
6
6 7
1
ON
OFF
1
10
2
9
3
8
4
7
5
6
678
O
N
O
F
F
IDENTIFIER
ID. 10
to
ID. 6
BAUD RATE
Controller housing
Factory settings
1
TERMINATION
8
!
!