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Integration in bestehende Systeme
Access to inputs and outputs
Reading the inputs, counters and outputs is always possible using GET requests to
the corresponding OID.
In the OID section
wtWebioEA….InOut
there are corresponding tables for this.
The MIB is symmetrically structured for the various Web-IO models. Input and output
tables are kept, which have a different number of entries depending on the Web-IO
type. In this way, the MIB remains compatible across devices..
Example: Querying the state of Input0
wtWebioEA….InOut » wtWebioEA….InputTable »
wtWebioEA….InputEntry » wtWebioEA….InputState
An index is appended to the table entries for the individual IOs. For Input 0 for exam-
ple „.1“ (return 0 = OFF and 1 = ON.)
There is also a corresponding table for the outputs:
wtWebioEA….InOut » wtWebioEA….OutputTable »
wtWebioEA….OutputEntry » wtWebioEA….OutputState
Indexing works in the same way as for inputs. If a 1 is transferred via SNMP-SET, the
output switches to ON, if a 0 is transferred, the output switches to OFF.
Switching the outputs requires a valid session.
Modbus-TCP
The Modbus slave operation for the Web-IO can be activated via the menu item
Communication paths » Modbus-TCP
. Here you can also specify whether the outputs
may be switched via Modbus TCP.
The following tables show which function codes and register addresses are
supported by the Web-IO.
