Siemens DP/AS-Interface Link 20E

Dealing with Problems/Error Displays
137
DP/AS-Interface Link 20E
Release 11/2002
C79000-G8976-C138–04
Table 5-1 , continued
Error RemedyPossible Cause
The DP/AS-i Link 20E module has
detected unconfigured AS-i sla-
ves.
Remove the unconfigured AS-i
slaves from the AS-i cable.
Automatic address programming
is unsuccessful although the
“AUP” display is lit.
The configuration data (I/O confi-
guration, ID code) of the replaced
AS-i slave do not match the va-
lues of the original slave.
Check whether the correct “repla-
cement slave” was used.
Compare the information from the
manufacturer about configuration
data.
If you want to replace the original
slave with a different type, assign
the address with the addressing
unit and reconfigure the DP/AS-
i Link 20E module (with the SET
button).
The replaced AS-i slave does not
have the address “ZERO”.
Set the address of the replaced
slave with the addressing unit.
The replaced AS-i slave is not cor-
rectly connected or is defective.
Check the connections of the
slave and if necessary replace the
slave.
The “CER” LED and the LEDs of
active AS-i slaves flicker irregu-
larly.
An extender is installed in the AS-
Interface with “Line1” and “Line2”
and the connections are reversed.
Correct the connections on the
extender.
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