Weidmuller GPRS Alarm Unit - Manual (Page 64)

Configuration
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4.10 Server
The Internet exchange server is operated with further partners on behalf
of Weidmüller. The server is a relational database which can be
accessed externally via SQL queries. The server itself need not be
configured externally by the customer. To be able to use the server,
only the following settings are required:
Interconnection between two or several IE-GPRS-I/Os to one another
can only be provided via the exchange server. The exchange server
performs the data transfer from one IE-GPRS-I/O to the other
IE-GPRS-I/O or within a group of several IE-GPRS-I/Os.
All IE-GPRS-I/Os log into the exchange server with a password, a code
and a group. Several IE-GPRS-I/Os of a group can communicate with
each other; the IE-GPRS-I/Os of different groups, however, cannot
communicate with each other.
IE-GPRS-I/Os may be master, slave or master/slave.
A master sends data to all slaves and master/slaves of a group, not to
other masters. The master receives data from all slaves and
master/slaves of a group, but not from other masters.
A slave sends data to all masters and master/slaves of a group, not to
other slaves. The master receives data from all masters and
master/slaves of a group, but not from other slaves.
ISP
• Internet service provider via which the IE-GPRS-I/O establishes
connection to the exchange server
• GPRS should be set as the service used (see 4.8 ISP settings for
the Internet access).