Siemens SIMATIC ET 200SP Function Manual

OPC UA communication
9.1 What you need to know about OPC UA
Communication
Function Manual, 11/2019, A5E03735815-AH
143
Example
A tag has the SIMATIC data type "COUNTER". You read COUNTER → UInt16 in the table.
You now know that you do not need to convert; the COUNTER value is sent over the line as
a UInt16 data type.
The client detects from the attribute "DataType" that the tag is actually the SIMATIC data
type "COUNTER". With this knowledge, the client reconstructs the data type.
Table 9- 1 SIMATIC and OPC UA data types
SIMATIC data type
OPC UA data type
BOOL
Boolean
BYTE BYTE
→ Byte
WORD WORD
→ UInt16
DWORD DWORD
→ UInt32
LWORD LWORD
→ UInt64
SINT
SByte
INT
Int16
DINT
Int32
LINT
Int64
USINT
Byte
UINT
UInt16
UDINT
UInt32
ULINT
UInt64
REAL
Float
LREAL
Double
S5TIME S5TIME
→ UInt16
TIME TIME
→ Int32
LTIME LTIME
→ Int64
DATE DATE
→ UInt16
TIME_OF_DAY (TOD) TOD
→ UInt32
LTIME_OF_DAY (LTOD) LTOD
→ UInt64
DATE_AND_TIME (DT) DT
→ Byte[8]
LDT
DateTime

Siemens SIMATIC ET 200SP Specifications

General

System Type	Distributed I/O System
Mounting	DIN Rail
Communication Protocol	PROFINET, PROFIBUS
IP Rating	IP20
Category	I/O Systems
Supply Voltage	24 V DC
Modularity	Yes
Hot Swapping	Yes
Storage Temperature	-40°C to +70°C
Digital Inputs	Yes
Digital Outputs	Yes
Analog Inputs	Yes
Analog Outputs	Yes
Communication Interface	PROFINET, PROFIBUS
Number of Modules	Up to 64
Relative Humidity	5 to 95% (non-condensing)
Operating Temperature	-25°C to +60°C