Setting The Baud Rate; Operating System - WAGO I/O System 750 Series Manual

48 • Fieldbus Coupler
Fieldbus Coupler 750-346

3.1.2.7 Setting the Baud Rate

The bus coupler supports 3 different Baud rates, 125 kBaud, 250 kBaud and
500 kBaud. DIP switches 7 and 8 are used to set the baud rate.
ON
Fig. 3-7: Example: Setting the baud
rate 250 kBaud (DIP 7 = ON) on a
station (node) with the address MAC
ID 1.
The configuration is only read during the power up sequence. Changing the
switch position during operation does not change the configuration of the bus-
coupler. Turn off and on the power supply for the fieldbus coupler to accept
the DIP switch change.
The default setting is Baud rate 125 kB.

3.1.3 Operating System

Following is the configuration of the master activation and the electrical in-
stallation of the fieldbus station.
After switching on the supply voltage, the coupler performs a self test of all
functions of its devices, the I/O module and the fieldbus interface. Following
this the I/O modules and the present configuration is determined, whereby an
external not visible list is generated.
In the event of a fault the coupler changes to the "Stop" condition. The "I/O"
LED flashes red. After clearing the fault and cycling power, the coupler
changes to the "Fieldbus start" status and the "I/O" LED lights up green.
Fig. 3-8: Operating system - Power on
8
7
6
5
4
3
2
1
g012549x
Baudrate DIP7
*)
125 kBaud OFF
250 kBaud ON
500 kBaud OFF
not allowed ON
*)
Presetting
DIP8
OFF
OFF
ON
ON
g012113e
WAGO-I/O-SYSTEM 750
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