Eaton Electrical PROFIBUS-DP EZ204-DP - Manual (Page 120)

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EZ800/EZD Control Commands
MN05013001E 116
Reading and writing markers
Table 51: Byte 2 – 4: Len, Type, Index
If required, refer to the more detailed description of the marker
allocation in the EZ800 manual and EZD manual. Only a small
extract of this manual is shown at this point in order to
illustrate the allocation principle.
Byte Meaning Value (hex), sent by
Master Slave
0 Toggle byte J page 94
1 Command
Read 91 –
Write B1 –
Response
Read successful – C2
Write successful – C1
Command rejected – C0
2 Len J Table 51 J Table 51
3 Type
4 Index
5 – 8 Data 1 – 4
Read operation 00 J “Example 1”
on Page 118
For write operation J “Example 2”
on Page 119
00
Operand Len Type Index
Marker bit M1 .. M96 01
hex
0B
hex
01 to 60
hex
Marker byte MB1 .. MB96 01
hex
0C
hex
01 to 60
hex
Marker word MW1 .. MW96 02
hex
0D
hex
01 to 60
hex
Marker double word MD1 .. MD96 04
hex
0E
hex
01 to 60
hex