Specifications

Error diagnostics
8.4 Malfunctions in remote maintenance
TS Adapter IE
Manual, 06/2008, A5E00977705-02
75
8.4.4 Access to the automation component fails
Diagnostics
The connection establishment was successful, but access to the remote automation
component fails.
Remedy
1. Check the BUSF LED on the TS Adapter IE. If it is lit, there is no connection to another
device over Ethernet. You can also view the status of the Ethernet connection in the
"Information > Status" tab of the configuration interface.
2. Check the IP addresses of the TS Adapter IE and the internal or external modem. The
addresses must be in the same subnet as the addresses of the remote automation
component, and must not be used either by another component in the network or by your
PG/PC.
3. Check the firewall setting:
– First disable the firewall in the "Security > Incoming Calls > General" tab for test
purposes.
NOTICE
When the firewall is disabled, your automation system is vulnerable to attack over the
remote connection!
Test the access to the automation component.
– Then enable the firewall in the "Security > Incoming Calls > General" tab.
In the same tab, allow SIMATIC Protocols as exceptions.
In the "Security > Incoming Calls > SIMATIC Protocols" tab, allow S7 communication.
Test the access to the automation component again.