480 Rockwell Automation Publication 1444-UM001D-EN-P - June 2018
Appendix A CIP Objects
The data that is sent with an Advanced CM data request is divided into two
separate sections, the class section, and four instance sections. This process is
similar to how EtherNet/IP classes are constructed with one class instance and
multiple 'instance' instances.
The host sends the following Advanced CM Data Request Parameters as part
of an 0x4B service request.
Table 226 - Advanced CM Data Request Parameters
Byte Offset
Within
Structure
Structure
Member
Data
Type
Description
Class Instance
0Pad USINT-
1 Advanced Session
Timeout
USINT Seconds to have ownership of Advanced CM setup.
2 Advanced Session
Instance
UINT Set to 0, unless restarting an existing (unexpired) request, where
you’d pass in the Advanced Session Instance from the previous
response.
4 Sync Data Control UINT Used to request synchronized data from multiples modules.
Instance 1 (Channel 0)
6 Pad WORD Used to align data to a 32 bit boundary.
9Number of
Averages
SINT Identical control to the control used in the Normal CM Data
Object (0x30A).
10 Waveform Record
Length
SINT Defines the number of samples in the Advanced CM, waveform.
11 FFT Line Resolution SINT Identical control to the control used in the Normal CM Data
Object (0x30A), but with additional indices. See Table 227 on
page 481.
12 FFT Window
Function
SINT Identical control to the control used in the Normal CM Data
Object (0x30A).
13 FFT Line Value
Scaling
SINT Allows line/bin values to be returned scaled as Peak, Peak to
Peak, or RMS [0 Peak, 1 Peak to Peak, 2 RMS].
14 Pad INT Used to align data to a 32 bit boundary.
Instance 2 (Channel 1)
16 Enable BYTE A bit-wise enable control.
17 Number of
Averages
SINT Identical control to the control used in the Normal CM Data
Object (0x30A).
18 Waveform Record
Length
SINT Defines the number of samples in the Advanced CM, waveform.
19 FFT Line Resolution SINT Identical control to the control used in the Normal CM Data
Object (0x30A), but with additional indices. See Table 227 on
page 481.
20 FFT Window
Function
SINT Identical control to the control used in the Normal CM Data
Object (0x30A).
21 FFT Line Value
Scaling
SINT Allows line/bin values to be returned scaled as Peak, Peak to
Peak, or RMS [0 Peak, 1 Peak to Peak, 2 RMS].
22 Pad INT Used to align data to a 32 bit boundary.
Instance 3 (Channel 2)
24 Enable BYTE A bit-wise enable control.
To Next Page
Loading...
Need help?
General