Siemens DP/AS-Interface Link 20E User Manual

Dealing with Problems/Error Displays
136
DP/AS-Interface Link 20E
Release 11/2002
C79000-G8976-C138–04
Table 5-1 , continued
Error RemedyPossible Cause
An AS-i slave was connected
whose configuration data (I/O
configuration, ID code) do not
match the values of the
configured AS-i slave.
Check whether the wrong slave
has been connected. If necessary,
reconfigure the DP/AS-i Link 20E
module.
Short circuit on the AS-i cable Check the AS-i cable and the con-
nected AS-i slaves.
The CER display flickers, in other
words a configured slave is lost
sporadically.
Bad contact Check the electrical connections
of the AS-i slaves.
Interference on the AS-i cable. Check the correct grounding of
the DP/AS-i Link 20E module and
check the AS-i cable. Check that
the shield of the AS-i power sup-
ply unit is connected correctly.
The DP/AS-i Link 20E module
does not switch from the configu-
ration mode to the protected
mode.
Cyclic data exchange with the DP
master is active.
Interrupt the connection to the DP
master (by unplugging the bus
connector) or switch the DP ma-
ster to STOP.
The SET button was not pressed
long enough.
Press the SET button for at least
0.5 seconds.
An AS-i slave with address 0 is
connected to the AS-i cable.
The DP/AS-i Link 20E module
cannot switch to the protected
mode as long as this slave exists.
Remove the AS-i slave with ad-
dress 0.
The DP/AS-i Link 20E module
does not switch from the protected
mode to the configuration mode.
Cyclic data exchange with the DP
master is active.
Interrupt the connection to the DP
master (by unplugging the bus
connector) or switch the DP ma-
ster to STOP.
The SET button was not pressed
long enough.
Press the SET button for at least
0.5 seconds.
After failure of an AS-i slave, the
“AUP” display remains off.
The DP/AS-i Link 20E module is
in the configuration mode.
”Automatic Programming” is not
possible in the configuration
mode.
Program the address of the new
AS-i slave with the address pro-
grammer or using the command
interface of the DP/AS-i Link 20E.
More than one AS-i slave has
failed.
Check the AS-i cable.
If “APF” is displayed at the same
time, check the power supply on
the AS-i cable.
If more than one slave is defec-
tive, program the address on the
replaced slaves using the addres-
sing unit.

Siemens DP/AS-Interface Link 20E Specifications

General

Brand	Siemens
Model	DP/AS-Interface Link 20E
Category	Computer Hardware
Language	English