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PLC Layer 7 program interface CP1413plus manual
4-42 Rev. 00/07
4.3.2 General Layer 7 functions
4.3.2.1 Start connection
#include <S5ACCESS.H>
unsigned short WENTRY_C S5StartConnection (
H1_CONNECT_PARAMS W_POINTER cr)
The
S5StartConnection
function is used to define a connection to another system on the
network.
This function must be executed before a connection can be used.
Parameters
cr
Pointer to a structure containing connection parameters. These
parameters are read by means of
S5GetConnectionParameter
.
The value Vnr is set if the function completes without error. This
represents the connection number. However, this number will only be
returned if
- all drivers have been installed.
- the connection parameters are correct.
- the remote station acknowledges the connection if required by the
connection parameters.
A valid Fehler! Textmarke nicht definiert.connection number does
not imply that the connection to the partner exists. This also depends
on the connection parameters.
Return value
0
H1_BAD_CR_PARAMS
H1_NO_SLOT
H1_NO_DRIVER
H1_NO_ADAPTER
See also
S5StartConnectionCard
S5StopConnection