
Siemens TCP/IP Ethernet Driver Help
When writing to T memory, the Siemens time base will also be applied. To assign a value to a timer in the
controller, write the desired value as a count of milliseconds to the appropriate timer.
Counters
The value returned for C memory will automatically be converted to a BCD value.
Examples
S7 Data Type Data Type Input Flags Data Blocks
B
Byte
Byte
Boolean
String
Array
IB0
IBYTE0
IB0.7
IBYTE0.7
IB0.64
IBYTE0.64
IB0[2][5]
IBYTE0[2][5]
MB0
MBYTE0
MB0.7
MBYTE0.7
MB0.64
MBYTE0.64
MB0[2][5]
MBYTE0[2][5]
DB1,B0
DB1,BYTE0
DB1,B0.7
DB1,BYTE0.7
DB1,B0.64
DB1,BYTE0.64
DB1,B0[2][5]
DB1,BYTE0[2][5]
C
Char
Char
Boolean
String
Array
IC0
ICHAR0
IC0.7
ICHAR0.7
IC0.64
ICHAR0.64
IC0[10]
ICHAR0[10]
MC0
MCHAR0
MC0.7
MCHAR0.7
MC0.64
MCHAR0.64
MC0[10]
MCHAR0[10]
DB1,C0
DB1,CHAR0
DB1,C0.7
DB1,CHAR0.7
DB1,C0.64
DB1,CHAR0.64
DB1,C0[10]
DB1,CHAR0[10]
D
DWORD
DWord
Boolean
Array
ID0
IDWORD0
ID0.31
IDWORD0.31
ID0[10]
IDWORD0[10]
MD0
MDWORD0
MD0.31
MDWORD0.31
MD0[10]
MDWORD0[10]
DB1,D0
DB1,DWORD0
DB1,D0.31
DB1,DWORD0.31
DB1,D0[10]
DB1,DWORD0[10]
DATE String IDATE0 MDATE0 DB1,DATE0
DI
DINT
Long
Boolean
Array
IDI0
IDINT0
IDI0.31
IDINT0.31
IDI0[4][3]
IDINT0[4][3]
MDI0
MDINT0
MDI0.31
MDINT0.31
MDI0[4][3]
MDINT0[4][3]
DB1,DI0
DB1,DINT0
DB1,DI0.31
DB1,DINT0.31
DB1,DI0[4][3]
DB1,DINT0[4][3]
DT String
Date
IDT0
IDT8
MDT0
MDT8
DB1,DT0
DB1,DT8
I
INT
Short
Boolean
Array
II0
IINT0
II0.15
IINT0.15
II0[5][2]
IINT0[5][2]
MI0
MINT0
MI0.15
MINT0.15
MI0[5][2]
MINT0[5][2]
DB1,I0
DB1,INT0
DB1,I0.15
DB1,INT0.15
DB1,I0[5][2]
DB1,INT0[5][2]
REAL Float
Array
IREAL0
IREAL0[10]
MREAL0
MREAL0[10]
DB1,REAL0
DB1,REAL0[10]
String String ISTRING0.10 MSTRING0.10 DB1,STRING0.10
TOD String ITOD0 MTOD0 DB1,TOD0
T String IT0 MT0 DB1,T0
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