Lenze 2131IB - Manual (Page 32)

Parameter setting
6-9 BA2131EN
6.3.4 Example 2: Write parameter
Task
The heatsink temperature (value = 43
˜
C) C0061 is to be read by the controller.
Job (byte 1/ service)
Bit 0-2 = 2 Write job (xxxx x001)
Bit 3 = 0 Reserved (xxxx 0001)
Bit 4-5 = 3 Data length 4 byte (xx11 0001)
Bit 6 = X Handshake changes frequently (xx11 0001)
Bit 7 = 0 Only relevant with response (0x11 0001)
SUBINDEX (byte 2)
Subindex = 0, as there is not subindex under code C0061.
INDEX (byte 3 + 4)
Index calculation:
Index = 24575 - code number
Index = 24575 - 61 = 24514 = 5FC2
hex
Response to drive
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8
Service Subindex Index
High byte Index
Low byte Data 4 Data 3 Data 2 Data 1
0x11 0001 0 5F C2 00 00 00 00
Response of the controller when no fault occurs
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8
Service Subindex Index
High byte Index
Low byte Data 4 Data 3 Data 2 Data 1
0x11 0000 0 5F C2 00 06 8F B0
Index of the read request = 5FC2
hex
Data 1 to data 4 = 43 ˜ C x 10000 = 430000 = 00 06 8F B0
6.4 Process data
Process data are data memories in which several parameters for a new parameter - the process
data - are summarized for fast transmission. The host has direct access to the process data. In the
PLC, for instance, the data are directly assigned to the I/O area. These process data are cyclically
exchanged between the controller and the master. They are subdivided into
l Process output data (PO data)
l Process input data (PI data)
Here the data flow starts from the master, i.e. the PO data of the master are PI data for the controller.
The controller gets the control information from the master and returns status information.
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