Siemens SIMATIC S7-1500 Function Manual page 175

Web pages
3.20 API (Application Programming Interface)
Name of the data type Name of the data type
in the TIA Portal in Web API
ldt
LDT
struct
Struct
iec_counter
IEC_COUNTER
iec_timer
IEC_TIMER
dtl
DTL
iec_ltimer
IEC_LTIMER
iec_scounter
IEC_SCOUNTER
iec_dcounter
IEC_DCOUNTER
iec_lcounter
IEC_LCOUNTER
iec_ucounter
IEC_UCOUNTER
iec_uscounter
IEC_USCOUNTER
iec_udcounter
IEC_UDCOUNTER
iec_ulcounter
IEC_ULCOUNTER
error_struct
ERROR_STRUCT
nref
NREF
cref
CREF
Arrays
Arrays are displayed as JSON objects. The key is a string with a numeric representation of
the index.
The following example shows the representation in the TIA Portal:
Figure 3-79 Representation in the TIA Portal
Addressing the user data
The Web API supports the following addressing formats:
● Symbolic addressing of a tag in the tag, e.g. Tag_1
● Symbolic addressing of a tag in a data block, e. g. "MyDB".Static_1
174
Representation in the Web API
JSON string with a numerical representation of an unsigned integer ba-
sed on the number 10 in a range from 0 to 18 446 744 073 709 551 615
This value represents the number of nanoseconds since 01.01.1970
midnight (12:00:00.0 am).
Structured data type whose data structure can be determined using the
PlcProgram.Browse method.
Function Manual, 11/2019, A5E03484625-AG
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