M_DP_TB_1

Double-point information with CP56Time2a time tag.

- obj

 

 

 

 

ASDU object

|---

+ head

 

 

 

Reserved

|---

- ident

 

 

 

DATA UNIT IDENTIFIER

|

|---

eType

= 0x1F (31)

= M_DP_TB_1

Type identification

|

|---

bSQ

 

= FALSE

Sequence of information objects

|

|---

nObj

 

= 1

Number of objects

|

|---

bT

 

 

Test

|

|---

bPN

 

 

Positive/negative confirmation/activation

|

|---

eCOT

 

 

Cause of transmission

|

|---

nORG

 

 

Originator address

|

|---

asduAddr

 

 

Common address of asdu

|

|---

eClass

 

 

Fifo priority class

|---

- info

 

 

 

INFORMATION OBJECT

 

|---

objAddr

 

 

Information object address

 

|---

stream

 

 

Information element/object data

 

 

|---

length

= 8

 

 

 

|---

data

 

7

6

5

4

3

2

1

0

 

 

 

 

|---

data[0] =

IV

NT

SB

BL

0

0

DPI

DIQ = Double-point information with quality descriptor

 

 

 

|---

data[1..7] =

CP56Time2a

Seven octets binary time tag

 

 

 

|---

data[8..IEC870_MAX_ASDU_DATA_BYTE] =

 

Reserved