Fieldbus coupler/controller
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Fieldbus coupler 750-319
Modular I/O System
L
ON
W
ORKS
®
3.1.4 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.
Stop
red “I/O” LED indicates
blink code
Switching on the
supply voltage
Test o.k.?
No
Yes
Fieldbus coupler is
in operating mode
“I/O” LED is shining green
Initialization,
Determination of the I/O modules
and the configuration,
“I/O” LED is blinking red
Fig. 3-5: Operating system 750-319
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