Commands
2014-
02
41
All three ident channels (two read/write head channels, one configuration channel) are
addressed using an input and an output instance. The PLC requires less storage space as a
result.
The channels are distinguished by the different parameters of the ident telegram.
Refer to appendix A to view an example for mixed mode.
7.8.3
Separated mode
Figure 7.2
1 see chapter 7.8.4
Each ident channel is addressed using a separate input and separate output instance, which
simplifies data processing because different ident channels process the data in different areas
of the memory.
Refer to appendix A to view an example for separated mode.
7.8.4
Data length
Depending on the data length required, select one of four attributes with different lengths per
input/output instance.
Class 64h and 65h, instance 1, 2, 5, 6
Attributes 1-3 require fewer data bytes than attribute 4.
channel 1
channel 2
channel
output command object
input command object
IDENTControl
Compact
class 64h
instance 05d
attributes 1-4
1
class 65h
instance 05d
attributes 1-4
1
class 65h
instance 01d
attributes 1-4
1
class 64h
instance 02d
attributes 1-4
1
class 65h
instance 02d
attributes 1-4
1
class 64h
instance 01d
attributes 1-4
1
Attribute ID
Data length
Maximum number of double words (4 bytes)
that can be read/written at any one time
1
8
1
2
12
2
3
32
7
4
60
14
attribute 4
attribute 3
attribute 2
attribute 1
