Schneider Electric TSXETG100 Manuale Utente Scaricare il pdf (Pagina 40)

Services

Closing a Connection

At a Glance A TCP/IP connection can be closed in one of two ways:

l by the remote station if it decides to end communication and send a TCP/IP

connection cutoff,

l by the TSX ETG 1000; if the maximum number of open connections has been

reached, the oldest open connection is closed.

When a connection is closed, it is signaled to the application by an error report

(message rejected) as soon as an exchange is initiated.

In the case of a telephone connection, the connection is broken:

l by the remote station if it decides to end communication and hang up the

telephone connection,

l if the remote device is not authorized to connect,

l if the time between two frames defined during configuration elapses,

l if the connection time exceeds the time defined during configuration (See

Configuration Parameters for TCP/IP Services, p. 108

l if a module acting as remote station server wants to establish a connection to

another remote station in client mode via modem,

l if an email connection is terminated and a command (override on module

command register) is sent by the device.

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Schneider Electric TSXETG100 Manuale Utente Pagina 40