4 Functional Mechanisms of this Application
4.1
FB3 “GetRequest” functionality
Evaluating An Access Point Clients List
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Functional Mechanisms of this Application
Below, the two functionalities are explained for which the evaluation of the “clients
list” is required.
4.1
FB3 “GetRequest” functionality
Through the FB3 the individual “MIB variables” are read out. Below, the individual
parameters of the FB3 are described.
View of the “readily” configured FB3
Figure 4-1
In detail, the block parameters are defined as follows:
Table 4-1
No. Parameters
Type
Meaning
1. Enable
INPUT
(Bool)
1 = The block is processed
0 = The block is not processed. A respective status value is set
2. ID
INPUT
(Int)
Connection ID of the UDP connection.
(Siehe Link)
3. LADDR
INPUT
(Word)
Module group address from the hardware configuration
(Siehe Link)
4. AgentIPAdress
INPUT
(DWord)
IP address in “Hex Format” of the remote device from which
the “MIB variables” are to be read.
(In this case it is the IP address of access point 1 or of access
point 2)
5. Community
INPUT
(String)
Community string that is used for reading.
(In this application always “public”)
6. Librarynumber
INPUT
(Int)
The DB number of the “MIB library” in the CPU program.
(In this case “20” (for DB20) or “21” (for DB21))
