Siemens 6RA7013-6DV62, Operating Instructions Manual

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05.05 Start-Up
SIEMENS AG 6RX1700-0AD76
7-49
SIMOREG DC Master Operating Instructions
The consistency of a block of data words is guaranteed within a DeviceNet I/O message
connection even in cases where more than 4 PZD words are used and the transmission data is
distributed among several telegrams. The data are not transferred from the CBD to the drive until
all data words have been received.
PKW object (parameter data)
The manufacturer-specific PKW object (class 100) is used to read and modify parameters of the
drive or a technology board by means of the DeviceNet master (PKW = parameter identifier value).
Explicit messaging mode is used for this purpose.
Only two instances are implemented for the PKW object: Instance 0 permits access to class
attributes and instance 1 (always set to "1") access to all parameter numbers (see DeviceNet
objects below).
Apart from the protocol header and trailer specific to DeviceNet, the structure of a telegram is
follows:
Parameter identifier
PKE
Parameter index
IND
Parameter value1
PWE1
Parameter value2
PWE2
For details about this telegram area, see also Section 7.7.9, Structure of request/response
telegrams. The useful data area of PROFIBUS, CAN Bus and DeviceNet telegrams is structured
identically.
DeviceNet GET Single
This object is used to read parameter values and 9 bytes in length.
Byte DeviceNet identification
1 [FRAG] [XID] [SRC/DST MAC ID]
2 [R/R] [Service] 0x0E [Get_Attribute_Single]
3 Class 100 [PKW object] manufacturer-specific
4 Instance 1 [Instance number] always set to 1
5 Attribute 1 [Attribute number] always set to 1
6 Parameter ID, L byte
7
PKE
Parameter ID, H byte
8 Parameter index, L byte
9
IND
Parameter index, H byte
DeviceNet SET Single
This object is used to modify parameter values and 14 bytes in length
Byte DeviceNet identification
1 [FRAG] [XID] [SRC/DST MAC ID]
2 [Fragmentation Protocol]
3 [R/R] [Service] 0x10 [Set_Attribute_Single]
4 Class 100 [PKW object] manufacturer-specific
5 Instance 1 [Instance number] always set to 1
6 Attribute 1 [Attribute number] always set to 1
7 Parameter ID, L byte
8
PKE
Parameter ID, H byte
9 Parameter index, L byte
10
IND
Parameter index, H byte
11 Parameter value, L word, L byte
12
PWE1
Parameter value, L word, H byte
13 Parameter value, H word, L byte
14
PWE2
Parameter value, H word, H byte