
Siemens TCP/IP Ethernet Driver Help
Examples
S7 Data Type Data Type Input Flags Data Blocks
None
DBX
Boolean I0.7
----
M0.7
----
----
DB1.DBX0.7
B
DBB
Byte IB0
----
MB0
----
----
DB1.DBB0
W
DBW
Word IW0
----
MW0
----
----
DB1.DBW0
D
DBD
DWord ID0
----
MD0
----
----
DB1.DBD0
Note:
All brand and product names are trademarks, registered trademarks, or service marks of their respective
holders.
Softing S7/S5 OPC Server Item Syntax
The following support for the Softing S7/S5 OPC server is considered to be limited. Care must be taken as the
data type for a given S7 data type/suffix may differ from the data type for the same S7 data type/suffix in the
specified product. The following information is intended to be a guideline for users that are already familiar with
and/or prefer the syntax of the specified product. For preferred item syntax, refer to Standard S7-
300/400/1200/1500 Item Syntax.
Address Syntax
Input, Output, Peripheral, Flag Memory Types
<memory type><S7 data type><address>:[<suffix>]
Timer and Counter Memory Types
<memory type><address>
DB Memory Type
DB<num>.<S7 data type><address>:[<suffix>]
Where <num> ranges from 1 to 65535.
See Also: Examples
Memory Types
Memory Type Description Address Range Data Type Access
I
E
Inputs
Dependent on S7 Data Type
Read/Write
Q
A
Outputs Read/Write
PI
PE
Peripheral Inputs Read Only
PQ
PA
Peripheral Outputs Read/Write
M
F
Flag Memory Read/Write
DB Data Blocks Read/Write
T Timers T0-T65535 DWord, Long Read/Write
C
Z
Counters C0-C65535
Z0-Z65535
Word, Short Read/Write
See Also: Examples
S7 Data Types
The S7 data type is used to coerce the data type for a tag. It does not apply to Timers and Counters. The default
data types are shown in bold. Suffix is not required.
Data
Type
Description Address Range Data Type Suffix
Data Type w/
Suffix
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