Siemens Simatic S7-400 - Page 86

Programming the OPC UA client blocks
5.3 FB230 UA_Connect
CP 443-1 OPC UA
86 Operating Instructions, 01/2017, C79000-G8976-C427-02
Parameter
S7 data type
Range of val-
ues
Meaning
ClientCertificate-
Name
STRING 0 .. 254 char-
acters
Name of the client certificate
The parameter is inserted by STEP 7.
ServerUri STRING 0 .. 254 char-
acters
Server address (URI) that is also stored in the
server certificate.
Example:
urn:<ApplicationName>:GUID
The parameter must not be left empty.
CheckServerCer-
tificate
BOOL 0, 1 Comparison (check) of the certificate sent by
the server with the server certificate stored in
the certificate store of the client CP:
• 0 = No check
• 1 = Check
Note
The settings of this parameter are overwritten
by the security settings in the configuration.
If you enable the check (1) but the security
functions are disabled in the configuration of
the CP, connection establishment is aborted
with an error message.
Recommendation: Leave the parameter at the
default setting (0) since the security functions
are enabled by the configuration of the CP.
TransportProfile WORD 1 1 = UATP_UATcp
According to the PLCopen specification, only
this transport profile is supported.
UserIdentityToken UDT See “Meaning” Data of the user authentication, see UDT752
UAUserIdentityToken (Page 87).
VendorSpecificPa-
rameter
WORD See “Meaning” Entry of the logical address of the CP 443-1
OPC UA. You will find this in STEP 7 proper-
ties dialog of the CP as an input address in the
"Addresses" tab.
SessionTimeout TIME 30000 ..
86 400 000
Maximum time that a session remains estab-
lished when there is no data traffic (millisec-
onds).
If the value is exceeded, the session (connec-
tion) is aborted. In this case, you will need to
re-establish the connection by calling
UA_Connect.
If you program values outside the permitted
range of values (30 seconds ... 1 day) the
value 1200000 (20 minutes) is used.