Rockwell Automation 1440-VLF02-01RA XM-121 Absolute Shaft Module - Manual (Page 94)

Publication GMSI10-UM014D-EN-P - May 2010
86 DeviceNet Information
The Poll response data can also be requested explicitly through Assembly
Object (Class ID 0x4), Instance 101 (0x65), Data Attribute (3).
The following table shows the static data format of Assembly instance 101.
COS Message Format
The Absolute Shaft COS message contains five bytes of data as defined in the
table below. The COS data can also be requested explicitly through Assembly
Object (Class ID 0x4), Instance 100 (0x64), Data Attribute (3).
Absolute Shaft Assembly Instance 101 Data Format
Byte Definition
0–3 Shaft Absolute Overall
4–7 Channel 1 Shaft Relative Overall
8–11 Channel 2 Case Absolute Overall
12–15 Shaft Absolute 1X Magnitude
16–19 Shaft Absolute 1X Phase
20–23 Channel 1 Shaft Relative 1X Magnitude
24–27 Channel 1 Shaft Relative 1X Phase
28–31 Channel 2 Case Absolute 1X Magnitude
32–35 Channel 2 Case Absolute 1X Phase
36-39 Channel 1 DC Bias
40-43 Channel 2 DC Bias
44-47 Speed
Absolute Shaft COS Message Format
Byte Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 Relay 1
Status Set Point
Multiplier
Alarm 2 Status Alarm 1 Status
1 Relay 2
Status Reserved Alarm 4 Status Alarm 3 Status
2 Relay 3
Status Reserved Alarm 6 Status Alarm 5 Status
3 Relay 4
Status Reserved Alarm 8 Status Alarm 7 Status
4 Relay 5
Status Reserved Reserved Alarm 9 Status