Siemens SIMATIC S7-1500 Function Manual page 57

RET_VAL parameter
Table 3- 8
Error code (W#16#...)
0000
00xy
803A
8081
80C1
Web server
Function Manual, 01/2013, A5E03484625-01
RET_VAL
Explanation
No error has occurred. There are no pending website requests that
must be released by the user program.
x: indicates if an error occurred during initialization of the Web
control DB (CTRL_DB):
x=0: no errors.
x=1: errors occurred. The error is encoded in the
"CTRL_DB.last_error" byte of the Web control DB.
y: Number of the pending request. Several requests are possible
(e.g., request "0" and "1" are pending: y="3").
y="1": Request "0"
y="2": Request "1"
y="4": Request "2"
y="8": Request "3"
The specified Web Control DB does not exist on the CPU.
Incorrect version or incorrect format of the Web Control DB.
There are no resources available to initialize the Web application.
Websites
3.8 User pages
57