Jetter JVM-407B-HMI, User Manual

Page: 226 / 300

226 Jetter AG
10 Programming
If a server is to establish a UDP/IP connection to a server, you can invoke the
function and assign the return value of a variable for further evaluation as
follows:
Result := ConnectionCreate(CONNTYPE_SERVER,
IPTYPE_UDP,
0 ,
46000 ,
0 );
UDP is a connectionless communication mode. For this reason, the device
JVM-407B opens only one communication channel for receiving data from a
network client. This function is processed in the following steps:
Step Description
1 The device JVM-407B sets up a UDP/IP communication channel at port
46000 for receiving data.
2 If ... ... then ...
no error has occurred, the function is terminated and a
positive value is returned as handle
for further access to the connection.
an error has occurred, the function is terminated and a
negative value is returned.
 Terminating a connection (see page 232)

Sending data
(see page 227)
 Receiving data (see page 229)
 Initializing the user-programmable IP interface (see page 222)
Using this function with
a UDP/IP server
Functioning principle
with a UDP/IP server
Related topics