Siemens DP/AS-Interface Link 20E Manual page 28

Technical Description, Installation Instructions, Operation
Protected Mode
If the DP/AS-Interface Link 20E is in the protected mode, it only exchanges data
with slaves that are "configured". In this sense, "configured" means that the slave
addresses stored on the DP/AS-Interface Link 20E and the configuration data
stored on the DP/AS-Interface Link 20E match the values of the existing AS-i
slaves.
Preparing to Configure using Buttons
Make sure that the following situation applies:
S The data exchange between the DP master and DP/AS-i Link 20E module is
interrupted or the DP master is in the STOP mode.
S The DP/AS-i Link 20E module and all AS-i slaves must be connected to the AS
interface and supplied with power by the AS-i power supply unit.
S The AS-i slaves must have unique addresses other than "0".
Notice
It is only possible to configure the AS interface in the status display or slave dis-
play status. The DP/AS-i Link 20E module must not be in the PROFIBUS address
display mode; in other words when the SET button is pressed, the "ADR" LED dis-
play must not lights up red.
Configuring using Buttons
1. Press the DISPLAY button to set the DP/AS-i Link 20E display to the "status
display" mode (initial status).
2. Check whether the DP/AS-i Link 20E module is in the "configuration mode".
("CM" LED lit ). If not, change the DP/AS-i Link 20E to the configuration mode
using the SET button.
3. By changing to the slave display with the DISPLAY button, you can check
whether all the slaves connected to the AS-Interface exist and are displayed.
4. Press the SET button. This configures the DP/AS-i Link 20E, in other words the
actual configuration detected by the DP/AS-i Link 20E is stored as the default in
the non-volatile EEPROM. At the same time, the DP/AS-i Link 20E module is
switched to the protected mode, the "CM" LED goes off.
The "CER" LED also goes off since the "expected configuration" stored on the
DP/AS-i Link 20E module after configuration matches the existing "actual
configuration" on the AS-Interface.
28
DP/AS-Interface Link 20E
Release 11/2002
C79000-G8976-C138–04