W&T Com-Server++, Manual

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177
W&T
OPC data transfer
Subject to error and alteration
22�3 Configuration of the OPC server
The OPC Server is implemented as a background service, and
can be used without a user login. Configuration is file-based,
whereby the configuration files contain general options and
a device list. Any number of these files may be stored under
any desired names. This allows you for example to preserve
earlier work states or administer alternate configurations.
The configuration which the OPC Server actually uses is on the
other hand stored under a pre-defined name in the Windows
standard directory for common application data. It is automa-
tically read when the configuration program is started, and
as log as it it open the title line shows „Active configuration“
instead of the actual file name.
1 All changes made from within the configuration tool
do not become active until the menu item
File
r
Save
has been invoked as the active configuration.
22�3�1 Optional settings on the Com-Server
Starting from the factory default setting, only the three net-
work-specific parameters
IP Address , Subnet Mask and Gate-
way Address need to be configured in order to operate the
Com-Server. It is not necessary to set the serial transmission
parameters such as baud rate, since these are automatically
made by the OPC Server.