W&T 57630, Manual

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131
W&T
OPC
Subject to errors and modifications:
TCP port number:
Must agree with the Local Port entry of the Web-IO (factory
setting: 49153)
System password:
Enter here the Configurator or Administrator password for the
Web-IO. If you are unsure of the correct password, please note
after closing the window any status messages for the device in
which problems are indicated („Password required“ or „Incorrect
password“).
Consecutive device number:
This number is automatically assigned when adding a new I/O
server or Com-Server and is intended to ensure that each device
gets a different name (Box1, Box2, Com3, Box4, etc.). Manual
changes may be desirable for example if you want to assign the
same device number to the I/O ports and the serial port of an I/
O server. The resulting device name would then be for example
„Box1“ and „Com1“.
Refresh at least every ... sec.:
While the Web-IO is itself reporting changes to the inputs, the
counter states for example have to be queried. This takes place
during the interval specified here, whereby the entry is rounded off
to a multiple of 0.1 seconds.
These regular queries also serve to detect a fault in the TCP
connection to the terminal device as quickly as possible. A fault is
presumed (and the connection reset) when no reply from the
device has arrived between two queries.
1
A very small value at here can therefore make it
impossible to open a connection.
Poll only (do not subscribe to messages):
Opting out of automatic messaging has the advantage that the
amount of data traffic on the network does not depend on any
external events.
Device type:
Select Web-IO