Siemens SINUMERIK 840Dsl Configuration Manual page 41

Area
Output image
Data block
Data block
Data block
Data block
Input image
Input image
Input image
Input image
Bit memory
Bit memory
Bit memory
Bit memory
Counters
Timers
PLC time
Notes regarding the table:
● "x" represents the byte offset; "y" the bit number in the byte and "z" the data block number.
● The data type in bold characters is the default data type and does not have to be specified.
The specifications DB2.DBB5.BYTE and DB2.DBB5 are equivalent.
● Square brackets are used to access arrays, e.g. "/Plc/DB5.DBW2:[10]" (word array of length
10).
● Access to STRING arrays ("/Plc/DB123.DBB0:STRING[5]") is not supported.
Examples of variable paths (PLC access operations)
Table 5-3 Examples of variable paths (PLC access operations)
Variable path
/Plc/M5.0
/Plc/DB5.DBW2
SINUMERIK Integrate for Engineering Access MyMachine / OPC UA
Configuration Manual, 04/2018, 6FC5397-1DP41-0BA0
Address (IEC)
QDx
DBz.DBXx.y
DBz.DBBx
DBz.DBWx
DBz.DBDx
Ix.y
IBx
IWx
IDx
Mx.y
MBx
MWx
MDx
Cx
Tx
Clock
Description
Memory bit 0 at byte offset 5
Word (16-bit) at byte offset 2 in data block 5
Permissible data types
DWORD,
DINT,
REAL
BOOL
BYTE, CHAR,
STRING
WORD, CHAR,
INT
DWORD,
DINT,
REAL
BOOL
BYTE, CHAR,
STRING
WORD, CHAR,
INT
DWORD,
DINT,
REAL
BOOL
BYTE, CHAR,
STRING
WORD, CHAR,
INT
DWORD,
DINT,
REAL
-
-
-
Functionality
5.3 Variable access
OPC UA data type
UInt32
Int32
Double
Boolean
UInt32
String
UInt32
Int32
UInt32
Int32
Double
Boolean
UInt32
String
UInt32
Int32
UInt32
Int32
Double
Boolean
UInt32
String
UInt32
Int32
UInt32
Int32
Double
Byte
UInt32
UInt16
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