Siemens SIMATIC ET 200AL - Page 872

OPC UA communication
9.3 Using the S7-1500 as an OPC UA server
Communication
186 Function Manual, 12/2017, A5E03735815-AF
Parameters for "OPC_UA_ServerMethodPre"
Table 9- 2 The parameters of the instruction "OPC_UA_ServerMethodPre"
Parameter
Declaration
Data type
Meaning
Done Output BOOL Status of execution:
•
0: Execution of the instruction aborted, not yet
complete or not yet started
•
1
: Execution of instruction completed without
errors
Busy Output BOOL Execution status parameter:
•
0
: Instruction not being executed
•
1
: Instruction currently being executed
Error Output BOOL Error display
•
0
: No error
•
1
: An error has occurred. See "Status" pa-
rameter.
Status Output DWORD Cause of the error, see "Error codes for the sta-
tus" below.
UAMethodCalled Output BOOL The method provided has been called by an OPC
UA client.
UAMeth-
od_InParameters
InOut VARIANT Pointer to a tag that contains the input parame-
ters for the method provided.
Error codes for the status
The "Status" parameter provides information about errors that occurred during execution of
the instruction.
The following table describes the different categories of error codes.
Table 9- 3 Error codes for the status
Error code
(hexadecimal values)
Explanation
0000_0000
Instruction finished successfully.
8xxx_xxxx
OPC UA specific error
Axxx_xxxx
PLCopen specific error
B080_C300
Insufficient resources
B08x_yz00
SIMATIC-specific error
For more error codes, see Error codes (Page 194)