Eaton Electrical PROFIBUS-DP EZ204-DP ユーザーズマニュアル

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MN05013001E

Markers: M1 – M16/N1 – N16
Unlike the write operation, the marker read operation reads 

the entire marker area of a particular marker type (M or N) is 

read. 
Telegram structure

0

Toggle byte

J

1

Command: Read

88

–

Response:

Read successful

–

C2

Command 

rejected

–

C0

1

2

Len

01

01

3

Type

M marker

86

86

N marker

87

87

4

Index

2

00

00

5 

Data 1 (Low Byte)

00

6 

Data 2 (Low Byte)

00

7 – 8

Data 3 – 4

00

00

1) Possible causes J page 91
2) There are 16 M markers and 16 N markers. The markers are 

addressed by Type and Index:

Use Type to select the M or N marker. 

Use Index to select the marker number.