ST_IEC870_5_101DataUnit_Ident
ID field of the data unit (ASDU).
Syntax
TYPE ST_IEC870_5_101DataUnit_Ident:
STRUCT
eType : E_IEC870_5_101TcTypeID;
bSQ : BOOL;
nObj : BYTE;
bT : BOOL;
bPN : BOOL;
eCOT : E_IEC870_5_101COTType;
nORG : BYTE;
asduAddr: DWORD;
eClass : E_IEC870_5_101ClassType;
END_STRUCT
END_TYPEeType: IEC 60870-5-101/104 ASDU type ID := <0..255>.
bSQ: Sequence-flag := <FALSE = single, TRUE = sequence>.
nObj: Number of information objects or information elements := <0..127>.
bT: Test flag (rarely used).
bPN: Positive/negative confirmation := <FALSE = positive, TRUE = negative>.
eCOT: IEC 60870-5-101/104 cause of transfer (COT) := <0..63>.
nORG: Source address.
asduAddr: Common ASDU address (CAA).
eClass: Priority class (TX data).
Requirements
|
Development environment |
Target system type |
PLC libraries to be linked (category group) |
|---|---|---|
|
TwinCAT v3.1.4012.0 |
PC oder CX (x86, x64, ARM) |
Tc2_IEC60870_5_10x (Communication->IEC60870) |