M_TTM_TA_3

Time-tagged message.

- obj

ASDU object

|---

+ head

Reserved

|---

- ident

DATA UNIT IDENTIFIER

|

|---

eType

= 0x1 (1)

= M_TTM_TA_3

Type identification

|

|---

bSQ

= TRUE

Sequence of information objects

|

|---

nObj

= 1

Number of objects

|

|---

eCOT

Cause of transmission

|

|---

asduAddr

Common address of asdu

|

|---

eClass

Fifo priority class

|---

- info

INFORMATION OBJECT

|---

fc

Function code/type

|---

n

Information number

|---

stream

Information element/object data

|---

length

= 6

|---

data

7

6

5

4

3

2

1

0

|---

data[0] =

0

0

0

0

0

0

DPI

DPI = Double-point information

|---

data[1..4] =

CP32Time2a

Four octets binary time tag

|---

data[5] =

SIN

Supplementary information

|---

data[6..IEC870_MAX_ASDU_DATA_BYTE] =

Reserved