W&T 57630, Manual

Page: 47 / 211

47
W&T
Access types
Subject to errors and modifications:
SNMP
The inputs and outputs can be controlled using a private MIB. The
configuration of the Web-IO can also be affected. Access to the
outputs must first be activated for this mode.
TCP/UDP-Binary I and Binary II
These modes allow fast, flexible socket access, with
communication handled by exchanging binary structures.
For this the Web-IO provides two independent sockets (Binary I
and Binary II), which can be operated as TCP server, TCP client
or UDP peer. It is possible to incorporate password protection
when opening a connection to protect the application from
undesired access by third parties.
In addition to standard client and server applications, the Web-IO
offers three other application modes in binary mode:
.
Box-to-Box
In this mode the inputs on Web-IO correspond to the
outputs of a second and vice-versa.
.
50xxx-compatibility mode
To operate the Web-IO with applications that have been
programmed for W&T Digital I/O Com-Servers (predecessors
to the Web-IO 12+12 Digital), a compatibility mode is
available. Access in this mode is possible without password
protection.
. OPC
In OPC mode the Web-IO 12+12 Digital allows access from
process and visualization systems through the Wiesemann
& Theis OPC server, which can be downloaded free of charge
from our Web site.