Siemens IP-Module Spezifikationen PDF herunterladen (Seite 53)

Siemens TCP/IP Ethernet Driver Help

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.

Data Type Description Address Range Data Type

X Bit X0.b-X65534.b

.b is Bit Number 0-15

Boolean

B

Byte

Unsigned Byte B0-B65535

BYTE0-BYTE65535

Byte, Char

Char Signed Byte CHAR0-CHAR65535

Byte, Char

W

Word

Unsigned Word W0-W65534

WORD0-WORD65534

Word, Short, BCD

INT Signed Word INT0-INT65534 Word, Short, BCD

D

DWORD

Unsigned

Double Word

D0-D65532

DWORD0-DWORD65532

DWord, Long, LBCD, Float

DINT Signed

Double Word

DINT0-DINT65532 DWord, Long, LBCD, Float

REAL IEEE Float REAL0-REAL65532 Float

String S7 String STRING0.n-STRING65532.n

.n is string length.

0<n<= 210.

String

See Also: Examples

Array Support

The <.array size> notation is appended to an address to specify an array (such as MW0.10). Boolean arrays and

string arrays are not supported.

Examples

S7 Data Type Data Type Input Flags Data Blocks

X Boolean IX0.7 MX0.7 DB1,X0.7

B

Byte

Byte

Array

IB0

IBYTE0

IB0,10

IBYTE0,10

MB0

MBYTE0

MB0,10

MBYTE0,10

DB1,B0

DB1,BYTE0

DB1,B0,10

DB1,BYTE0,10

Char Char ICHAR0 MCHAR0 DB1,CHAR0

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