M_IRC_NA_3

Identification.

- obj

ASDU object

|---

+ head

Reserved

|---

- ident

DATA UNIT IDENTIFIER

|

|---

eType

= 0x5 (5)

= M_IRC_NA_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

= 13

|---

data

7

6

5

4

3

2

1

0

|---

data[0] =

COL

Compatibility level

|---

data[1..8] =

ASC

ASCII characters

|---

data[9..12] = 0x20 if not used

free

Internal vendor identification

|---

data[13..IEC870_MAX_ASDU_DATA_BYTE] =

Reserved