Parameter - Ua_Namespacegetindex - Siemens SIMATIC S7-400 Operating Instructions Manual

Programming the OPC UA client blocks
5.4 FB231 UA_NamespaceGetIndex
Call interface
Figure 5-3
5.4.2

Parameter - UA_NamespaceGetIndex

Block parameters
The following table explains the formal parameters of the program block.
Table 5- 4 Parameters of the block UA_NamespaceGetIndex
Parameter Declaration
Execute IN
ConnectionHdl IN
NamespaceUri IN
Timeout IN
NamespaceIndex OUT
88
Call interface in FBD representation
S7 data type Range of values
BOOL 0, 1
DWORD 1 .. 5
STRING Max. 254 charac-
ters
TIME 5000 .. 120000
WORD 0 .. 65535
Meaning
A rising edge 0 → 1 at the parameter starts
processing of the block. As long as Execute =
1, the other input parameters cannot be
changed.
Connection identifier supplied by UA_Connect
Specifies the address (name space URI) of the
target server
Example of the name space of the CPU sym-
bols in the S7-400 with CP 443-1 OPC UA:
http://www.siemens.com/simatic-classic-s7-
opcua
Maximum time for establishing the connection
in milliseconds. If the value is exceeded, pro-
cessing of the block is aborted with error num-
ber B0007001.
If a value is entered outside the permitted
range, the default value of 60000 (60 seconds)
is used.
Output of the name space index of the name
space specified by the "NamespaceUri" param-
eter.
The namespace indexes 0 and 1 are reserved
and specified by the OPC Foundation.
Operating Instructions, 01/2017, C79000-G8976-C427-02
CP 443-1 OPC UA