Input Description

EN

Data_Type	Default_Value	Range	Unit
BOOL	FALSE	TRUE/FALSE	-

The input EN has to be driven in edge triggered mode.

The execution of the Function Block is started with a positive edge on the input EN.

In the first call it evaluates its inputs and creates a local copy of them. Afterwards it starts its internal algorithm. It may take several PLC task cycles until it is executed.

Once the execution is completed DONE and its other outputs are set. To start the Function Block again a new positive edge on the input EN has to be applied.

SLOT

Data_Type	Default_Value	Range	Unit
BYTE	0	0 … 4 (6)	-

At input SLOT, the Communication Module slot is specified which should be used by the Function Block.

The internal Communication Module always has the index 0. All external Communication Modules are serially numbered from right to left, starting with 1.

IP_ADR_SVR   DWORD    (IP address of the server)

At input IP_ADR_SVR, the IP address of the DNS server to be used for resolving the hostname is specified.

HOSTNAME   STRING    (hostname)

At input HOSTNAME, the domain name of the host to be resolved to an IP address is specified. This name is sent ot the DNS server, which answers with an IP address.