Siemens SIMATIC S7-1500 Function Manual page 172

Supported data types
The following table shows:
● The data types supported by the Web API for reading and writing process values
● the representation in the Web API
● The respective match of the data type in the TIA Portal
Name of the data type Name of the data type
in the TIA Portal in Web API
bool
Bool
Byte
Byte
usint
USInt
word
Word
uint
UInt
hw_any
HW_ANY
hw_iosystem
HW_IOSYSTEM
hw_dpmaster
HW_DPMASTER
hw_device
HW_DEVICE
hw_dpslave
HW_DPSLAVE
hw_io
HW_IO
hw_module
HW_MODULE
hw_submodule
HW_SUBMODULE
hw_hsc
HW_HSC
hw_pwm
HW_PWM
hw_pto
HW_PTO
hw_interface
HW_INTERFACE
hw_ieport
HW_IEPORT
conn_any
CONN_ANY
conn_prg
CONN_PRG
conn_ouc
CONN_OUC
port
PORT
rtm_id
RTM
pip
PIP
db_any
DB_ANY
db_www
DB_WWW
db_dyn
DB_DYN
dword
DWord
udint
UDInt
aom_ident
AOM_IDENT
event_any
EVENT_ANY
event_att
EVENT_ATT
event_hwint
EVENT_HWINT
conn_r_id
CONN_R_ID
Web server
Function Manual, 11/2019, A5E03484625-AG
3.20 API (Application Programming Interface)
Representation in the Web API
Boolean JSON value. true oder false
JSON unsigned integer in a range from 0 to 255
JSON unsigned integer in a range from 0 to 65 535
JSON unsigned integer in a range from 0 to 4 294 967 295
Web pages
171