User`s guide

28 Wonderware Siemens SIMATIC NET S7 I/O Server
Note All Data Blocks are Read/Write (d=1 to 65,535, x=0 to 65,535, n=0 to 65,534,
m=0 to 65,532, y=0 to 7, v=1 to net PDU data size/type size - header information, this
size may vary). The longest string or array that can be read in a cyclic service has the
length of the PDU size minus 32 bytes. The longest string InTouch can process is 131
bytes. The longest string that can be poked is 256 bytes or the PDU size minus 28
bytes, whichever is less. Arrays are converted into HEXASCII strings representing the
big endian format of the binary data. The Wonderware Siemens SIMATIC NET S7 I/O
Server will process a write (POKE) to a Data Block. Examples: DB123,W24;
DB23,DINT10BCD; DI5,X2.0; DI6,BYTE4,10.
Flag Bytes (Merker)
Data Format Item/Point Suffix Data Type Range
Bit
FXx.y
Discrete 0 or 1
MXx.y
Discrete 0 or 1
String
FSx,v
Message String
MSx,v
Message String
FSTRINGx,v
Message String
MSTRINGx,v
Message String
FBx
Integer 0 to 255
MBx
Integer 0 to 255
Byte
FBYTEx
Integer 0 to 255
MBYTEx
Integer 0 to 255
DT Message 1990-1-1-0:00:00.000 to
2089-12-31-23:59:59.999
Byte Array
FBx,v
Message Hex ASCII String
MBx,v
Message Hex ASCII String
FBYTEx,v
Message Hex ASCII String
MBYTEx,v
Message Hex ASCII String
FCHARx
Integer -128 to 127
Char
MCHARx
Integer -128 to 127
DT Message 1990-1-1-0:00:00.000 to
2089-12-31-23:59:59.999
Char Array
FCHARx,v
Message Hex ASCII String
MCHARx,v
Message Hex ASCII String
FWn
Integer 0 to 65535
MWn
Integer 0 to 65535
FWORDn
Integer 0 to 65535
MWORDn
Integer 0 to 65535
Word BCD Integer 0 to 9999
KT Message 0.0 to 999.3
S5T Message 0ms to 2h46m30s
TR Real 0.0 to 9990.0 (s)
D Message 1990-1-1 to 2168-12-31
Word Array
FWn,v
Message Hex ASCII String
MWn,v
Message Hex ASCII String
FWORDn,v
Message Hex ASCII String
MWORDn,v
Message Hex ASCII String