Technical data

6-70 Bosch Rexroth AG | Electric Drives and Controls Rexroth VCP-Operating Concept | R911305038 / 01
DeviceNet
6.6.1.3 Data Memory
The data memory in the operating device is referred to as the Memory
Object.
The Memory Object Address has the following values.
The service
– for a read access is 0x33 and
– for a write access is 0x35.
6.6.1.4 Read Service
The following table illustrates the structure of the Explicit Message for
the Read service. Each field of the telegram is one byte long.
The word address corresponds to the offset within the data memory in
the operating device.
Address Name Comment
0x8A Class ID
0x01 Instance ID
0x01 Attribute Not required
Fig. 6-105: Memory object addresses
Byte Request telegram Response telegram
1 MAC ID MAC ID
2 Service ID
0x33
Service ID
0xB3
3 Class ID
0x8A
1st Data Word
Low Byte
4 Instance ID
0x01
1st Data Word
High Byte
5 Word Address
Low Byte
2nd Data Word
Low Byte
6 Word Address
High Byte
2nd Data Word
High Byte
7 Number of Bytes
Low Byte
8 Number of Bytes
High Byte
Fig. 6-106: Structure of the Explicit Message for the Read service