UDTs
FB
Designation
Connection-oriented protocols:
TCP native as per RFC 793, ISO
on TCP as per RFC 1006
Connectionless protocol: UDP
according to RFC 768
UDT 65*
TCON_PAR
Data structure for assigning connec-
tion parameters
Data structure for assigning parameters
for the local communications access point
UDT 66*
TCON_ADR
Data structure for assigning addressing
parameters for the remote partner
*)
More information about the usage of these blocks may also be found in the manual "SPEED7 Operation List" from VIPA
.
FBs
FB
Designation
Connection-oriented protocols:
TCP native as per RFC 793, ISO
on TCP as per RFC 1006
Connectionless protocol: UDP
according to RFC 768
FB 63*
TSEND
Sending data
FB 64*
TRCV
Receiving data
FB 65*
TCON
Establishing a connection
Configuring the local communications
access point
FB 66*
TDISCON
Terminating a connection
Closing the local communications access
point
FB 67
TUSEND
Sending data
FB 68
TURCV
Receiving data
*)
More information about the usage of these blocks may also be found in the manual "SPEED7 Operation List" from VIPA
.
n
Connection-oriented protocols establish a (logical) connection to the communication
partner before data transmission is started.
n
And if necessary they terminate the connection after the data transfer was finished.
n
Connection-oriented protocols are used for data transmission when reliable, guaran-
teed delivery is of particular importance.
n
In general, many logical connections can exist on one physical line.
Connection-oriented pro-
tocols
VIPA System MICRO
Deployment PG/OP communication - productive
Configure Open Communication
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