Rockwell Automation 1336T ControlNet Frn1.02 Rev 1.5 - Manual (Page 111)

4–69 Using Unscheduled Messaging
Publication 1336 FORCE–5.18 ––March, 1999
Trend Output Parameter specifies the sink parameter number that the
Trend Output parameter is linked to.
Example
In this example, a Trend 1 is set up to sample Velocity Feedback
(parameter number 101). The trend triggers when Velocity Feedback
is greater than 1750 rpm (an internal constant of 4096). When the
trigger condition is true, 400 more samples are taken (at a rate of 12
milliseconds each) before the trend stops. The output data is then
transferred to Analog Output 1 after the trend stops.
1 0
N7:10
2 3 4 5 6 7 8 9
N7:20
PLC MSG
Write File
Data Format
4096 0
0 101
15
101
–28670
4096
0
387
400 1 6 0 0
N7:90
PLC MSG
Read File
4096 3 4098
Setup Data Full
(continued)