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Commissioning the device
4.2 Interrupting and restoring a connection
4.2
Interrupting and restoring a connection
Introduction
The connection to the server can be interrupted in several ways:
● The server is offline or has has not completed its startup sequence.
● The password is incorrect.
● A firewall is blocking server access.
● The SINUMERIK server does not support the Industrial Thin Client, for example, if the
● The server has been shut down, for example, for maintenance purposes.
● The PROFINET/Ethernet network cable has been disconnected.
● A connection problem occurred in the network.
● A client-server connection was started on another device which logs onto the server with
the same data. The client-server connection running on your device is then terminated.
Note that there can be multiple client-server connections at one time.
Automatic connection establishment
The device tries to re-establish the interrupted connection automatically. There are two basic
standard cases for this:
● Initial start of a connection
● Existing connection
Terminate the active connection in order to cancel the attempts to establish a connection.
Special features
SINUMERIK
Initial start of a connection: Maximum of 40 connection attempts. Then the SINUMERIK
connection is terminated and the configuration settings are restored.
Existing connection: Automatic connection establishment. After the connection has been
canceled, the message "Waiting for HMI" appears.
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firmware on the server is outdated.
The connection cannot be established because the server is not ready, for example. The
device makes continuous attempts to establish the connection to the server.
An existing connection to the server is interrupted because the network cable has been
removed or the network is faulty, for example.
The device makes continuous attempts to re-establish the connection to the server.
Exception: If the device receives a message via the network, for example when the
server is shut down, the device terminates the current client-server connection.
Afterwards, the device will only try to re-establish the interrupted connection to the server
if the "Reconnect automatically" option is selected in the configuration settings.
Industrial Thin Client ITC1200, ITC1500, ITC1900, ITC2200
Operating Instructions, 04/2013, A5E03474888-02
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