c#plcsiemens
How can I read the Data Block structure of S7-300 PLC from the SUBBLK.DBT file of the S7-Project with C#
ÿÿ Ø ÷ü÷ü ªæ0«æ0«æ ÿ øî¿ÿ ÈÝ †¸ 0u ÅÈ‹ :u 1u 27 2u ÅÀ(Û ‚ ÿÿ ÿÿ
ÿÿ ÿÿ n u0 œu0 ÿÿ ÿÿ ÿ u: Zu: d u1u1 ÿ u2u2 ÿÿ ®
J
U
F‚
0uœ 0uÿÿÿÿ :uZ :ud 1u1u2u2u ÿÿ
ÿÿ 1
STRUCT
SystemTast : STRUCT //
Tast1 : BOOL ;
Tast2 : BOOL ;
Tast3 : BOOL ;
Tast4 : BOOL ;
Tast5 : BOOL ;
Tast6 : BOOL ;
Tast7 : BOOL ;
Tast8 : BOOL ;
Help : BOOL ;
ACK : BOOL ;
Tast : BOOL ;
Tast35 : BOOL ;
Tast36 : BOOL ;
Tast37 : BOOL ;
Tast38 : BOOL ;
Tast39 : BOOL ;
Tast40 : BOOL ;
Tast41 : BOOL ;
Tast42 : BOOL ;
Tast43 : BOOL ;
Tast44 : BOOL ;
Tast45 : BOOL ;
Tast9 : BOOL ;
Tast10 : BOOL ;
Tast11 : BOOL ;
Tast12 : BOOL ;
Tast13 : BOOL ;
Tast14 : BOOL ;
Tast15 : BOOL ;
Tast16 : BOOL ;
Tast17 : BOOL ;
Tast18 : BOOL ;
Tast19 : BOOL ;
Tast20 : BOOL ;
Tast21 : BOOL ;
Tast22 : BOOL ;
Tast23 : BOOL ;
Tast24 : BOOL ;
Tast25 : BOOL ;
Tast26 : BOOL ;
Tast27 : BOOL ;
Tast28 : BOOL ;
Tast29 : BOOL ;
Tast30 : BOOL ;
Tast31 : BOOL ;
Tast32 : BOOL ;
Tast33 : BOOL ;
Tast34 : BOOL ;
END_STRUCT ;
Res4 : INT ; //
Res5 : INT ; //
BildTyp : INT ; //
BildNr : INT ; //
reserviert1 : INT ; //
EingabefeldNr : INT ; //
reserviert2 : INT ; //
StoerMld1 : WORD ; //
StoerMld2 : WORD ; //
StoerMld3 : WORD ; //
StoerMld4 : WORD ; //
StoerMld5 : WORD ; //
StoerMld6 : WORD ; //
StoerMld7 : WORD ; //
StoerMld8 : WORD ; //
StoerMld9 : WORD ; //
StoerMld10 : WORD ; //
Betr_Mld1 : WORD ; //
Betr_Mld2 : WORD ; //
Betr_Mld3 : WORD ; //
Betr_Mld4 : WORD ; //
Betr_Mld5 : WORD ; //
Betr_Mld6 : WORD ; //
Betr_Mld7 : WORD ; //
Betr_Mld8 : WORD ; //
Betr_Mld9 : WORD ; //
Betr_Mld10 : WORD ; //
Funk_Tast1 : WORD ; //
Funk_Tast2 : WORD ;
res64 : WORD ;
res66 : WORD ;
res68 : WORD ;
LED_Abb1 : WORD ;
LED_Abb2 : WORD ;
res74 : WORD ;
res76 : WORD ;
res78 : WORD ;
Datenfach : STRUCT //Datenfach Rezepturen
K1 : WORD ; //Kennung 1
K2 : WORD ; //Kennung 2
K3 : WORD ; //Kennung 3
res : WORD ; //reserviert
Lang : WORD ; //Länge
END_STRUCT ;
Simodrive : INT ; //0=Kanal "a"; 1=Kanal "b"
END_STRUCT ; ÿÿ ÿÿ d ÿÿ Î ¿ (0 ÿÿ FB3,{åЇ·qÐ; ÿÿ ÿÿ ¨
VAR_INPUT
REQ : BOOL ; //Send activation
R : BOOL ; //Perform reset
LADDR : INT ; //Base address
DB_NO : INT ; //DB number for send data
DBB_NO : INT ; //DBB number for send data
LEN : INT ; //Length of send data
END_VAR
VAR_OUTPUT
DONE : BOOL ; //Request completed without error
ERROR : BOOL ; //Request completed with error
STATUS : WORD ; //Status message
END_VAR
VAR
SFCERR : INT ; //error returned by RD_LGADR & DPRD_DAT & DPWR_DAT
State : BYTE ; //Processing state
StatusWord : WORD ; //Internal version of STATUS
FpR : BOOL ; //Positive edge detect on R
FpReq : BOOL ; //Positive edge detect on REQ
ResetInProgress : BOOL ; //ResetInProgress
SiLaddr : WORD ; //DPRD_DAT / DPWR_DAT LADDR
InRequest : INT ; //SI input request code
InError : BOOL ; //SI input error
InSequence : INT ; //SI input sequence
OutRequest : INT ; //SI output request code
OutError : BOOL ; //SI output error
OutSequence : INT ; //SI output sequence
DbbOffset : INT ; //Next DBB
RemainingLength : INT ; //Length remaining
ModuleSize : INT ; //Size of module 4/8
CurrentLength : INT ; //Length of current segment
LastSegmentLength : INT ; //Length of last segment output
InBuffer : ARRAY [0 .. 7 ] OF //SI input buffer
BYTE ;
OutBuffer : ARRAY [0 .. 7 ] OF //SI output buffer
BYTE ;
AdrArea : BYTE ;
Rack : WORD ;
Slot : WORD ;
SubAddr : WORD ;
IsDP : BOOL ;
END_VAR
VAR_TEMP
PEAddr : ARRAY [0 .. 9 ] OF //Don't move: referenced as P#L 0.0 WORD 8
WORD ;
PECount : INT ;
PACount : INT ;
Temp : INT ;
Src : DWORD ; //source pointer
Dst : DWORD ; //destination pointer ÿÿ | ÷ü÷ü ÿ 08ÿ 8< ÿÿ ÿÿ
ÿÿ ÿÿ P ð d à ð ç 1.531 7!gvh01 - ÿÿ t
e ÿÿ ÿÿ
ÿÿ ÿÿ I 
Hello I am trying to read out the Data Block structure of S7-300 PLC from the SUBBLK.DBT file of the S7-Project. When I open the file I see that the neccesary information is inclueded in the SUBBLK.DBT file, but I cannot understand, which structure belongs to which DB. Between the parts, that can be read easily, there are some parts that exists of null character and other unknown characters. Is there a way to evaluate the file correctly?
Solution
Update: A guy at the German PLC forum did something like this some 12 years ago. Here his github: https://github.com/dotnetprojects/DotNetSiemensPLCToolBoxLibrary
- Waitpid equivalent with timeout?
- How do I get bit-by-bit data from an integer value in C?
- Decent ways to handle malloc failure?
- POSIX way to do O_DIRECT?
- Why do I not get a MessageBox popup when calling MessageBoxA
- C Compiler differences for iOS and Android development
- different initializ and sign pointer value in global and function
- Hi-Tech C Compiler: #define: "taking the address of this object is illegal"
- Should we disable compiler optimization until the program is bug free?
- Is it possible to convert C to asm without link libc on Linux?
- Explanation of Permission Bits
- Why are bitfields not tightly packed in a struct?
- Why is variable sized object initialization not allowed using const
- C not operator applied to int?
- When to use restrict and when not to
- Why the first node of a linked list is declared as a pointer?
- Problem with not working gdk_test_simulate_button in GTK3
- Configuring the STM32F407VET6 ADC using CMSIS
- Allow double floating point comparisons with Unity unit testing framework from Throw The Switch
- CMake imported library behaviour
- libssh2 public key authentication only requiring passphrase if key request is accepted
- Are arrays treated as static data structures by gcc compiler or as dynamic?
- Is there a 128 bit integer in gcc?
- Loading c library from c# with pinvoke on dotnet core
- Why does my compiler not accept fork(), despite my inclusion of <unistd.h>?
- C/C++ warn or prohibit literal string concatenation
- Fastest way to write & compile a C/C++ program in Windows
- How to pass a 2D dynamically allocated array to a function?
- Behavior of scanset
- How to create an ada lib.a and link to C