Technical data

R911305038 / 01 | Rexroth VCP-Operating Concept Electric Drives and Controls | Bosch Rexroth AG 6-73
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6.6.2.2 Transmit Data of the Operating Device (Produced Data)
The Produced Connection size is 5 bytes.
Byte 1 - Initialization
During the boot process, the operating device writes the value 0x00
into its Produced Data. Thus, the controller needs to initialize the entire
data memory in the operating device once.
Initialization means that all variable values in the data memory of the
operating device are set the same as in the controller. When this pro-
cess is completed, the controller writes the value 0xC3 into the Consu-
med Data.
The operating device acknowledges by writing the value 0xC3 into the
Produced Data.
After the boot process, the operating device waits for the initialization to
complete, before it accesses the data memory. If the initialization is not
performed within the time period set for the Delay until Connection Set-
Up, the message WAIT FOR INITIZING OF DATA-MEMORY BY MAS-
TER is displayed on the operating device.
To remove the message, press the Help key or a key that calls up ano-
ther mask.
Byte 2 - Control Byte
During initialization, the control byte is set to the value 0x00.
Bit 0 Bit 0 is the toggle bit.
After you change a variable on the operating device, bit 0 in the Produ-
ced Data toggles.
If the controller detects that bit 0 in the Produced Data and bit 0 in the
Consumed Data do not match, the controller reads the variable.
Once the read operation is complete, the controller sets the value of
Byte Designation
1 Initialization
2 Control Byte
3 Word Address - Low Byte
4 Word Address - High Byte
5 Number of Altered Bytes
Fig. 6-109: Structure of the Produced Data