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Troubleshooting
Safety
Danger from electrical current.
This can result in serious personal injury and damage to property.
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General remarks
Flashcode
If an error occurs, the field bus status/operating status LEDs signal the type of
error and where it occurred.
IMPORTANT! In some cases, the field bus coupler does not complete the fla-
shing sequence once the error has been rectified. Restart the field bus coupler
by switching the supply voltage off and on again, or by resetting the software.
Operating status
The operating status LEDs monitor local communications between the field bus
LEDs
coupler and field bus terminals. The green LED lights when there are no errors.
The red LED flashes at two different intervals if a terminal bus error occurs.
WARNING!
Before starting work, switch off all devices and components involved and dis-
connect them from the grid.
Secure all devices and components involved so they cannot be switched back
on.
After opening the device, use a suitable measuring instrument to check that
electrically charged components (such as capacitors) have been discharged.
(2)
(1)
(1)
Operating status LEDs
(2)
Field bus status LEDs
(3)
(3)
Supply LEDs
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left-hand LED ... monitors
thefield bus coupler power
supply
-
right-hand LED... monitors
the power contact supply
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