Setting The Baud Rate - WAGO -I/O-SYSTEM 750 Technical Description

52 • Fieldbus Coupler 750-337, 750-338
Hardware

3.1.2.8 Setting the Baud Rate

The bus coupler supports 9 different Baud rates. DIP switches are used to set
the baud rate.
The bus coupler changes to the configuration mode using the set module ID =
0 (all DIP switches off) with subsequent power On. The current set baud rate
is displayed in this status (starting from Firmware WT). The baud rate display
is shown by the top LED group (STOP, RUN, Tx-, Rx-Overflow), whereby
STOP = Switch 1,
RUN = Switch 2, Tx-Overflow = Switch 3 and Rx-Overflow = Switch 4. The
current set baud rate is displayed by the corresponding LEDs blinking slowly.
Now the new baud rate can be set using the DIP switch, by turning the corre-
sponding DIP switches to 'ON'.
The set configuration is saved by turning DIP8 to 'ON'. Following saving, the
new baud rate is displayed by the corresponding LEDs having a steady light.
Except for the baud rate of 1MBaud, this is displayed by all 4 LEDs blink-
ing/being lit.
Example:
Fig. 3-8: Example: Saving the baud rate 125 kB
In this status no data exchange via CAN is possible.
DIP
1 (LSB)
2
3
4 (MSB) Baud rate
5
6
7
8
Once the baud rate setting / baud rate check is completed, switch off the oper-
ating voltage knowing that only the DIP value will be used to calculate the IDs
which has been set during power ON. When switched off, the desired module
ID (=1 as delivered) can be set on the DIP.
Default baud rate: 125 kB
125 kB: Tx-Overflow LED blink / are lit
250 kB: STOP and RUN LED blink / are lit
g012441x
Function 1 800
Mbit kB
Baud rate 0 1
Baud rate 0 0
Baud rate 0 0
0 0
Accept- ´off´ -> ´on´ : Accepting the configuration settings
ance
500 250 125 100
kB kB kB kB
0 1 0 1
1 1 0 0
0 0 1 1
0 0 0 0
50 20 10 is displayed
kB kB kB by LED
0 1 0 STOP
1 1 0 RUN
1 1 0 Tx-
Overflow
0 0 1 Rx-
Overflow
WAGO-I/O-SYSTEM 750
CANopen