Rockwell Automation Allen-Bradley DeviceNet 193-DNCT, User Manual

Page: 43 / 92

Rockwell Automation Publication 193-UM009B-EN-P - February 2013 39
Tools Menu Chapter 8
to an oscilloscope or chart recorder). The first screen allows the operator to
configure the four Class, Instance, or Attributes to be monitored.
Press the Enter key after the CIA data is configured to display the Graph Trigger
Screen. This screen allows the operator to program a trigger point to stop the
graph display from updating. The operator can set which trace will be used as the
trigger as well as the slope, value, and position of trigger. The trigger point can be
disabled if the operator does not need this feature.
Press the Enter key after the trigger data is configured to display the Graph View
Screen.
CIA Copy and Paste is
available for this menu
Class, Instance,
Attribute to
graph, Note:
Traces with the
class set to zero
will not be
graphed.
Trace number 1-4
Max is the CIA’s value that
will be represented as the
top of the screen. Min is
the CIA’s value that will be
represented as the bottom
of the screen. (In this
example, a CIA value of 50
would be in the middle of
the screen; any CIA value at
or above 100 would be
displayed on the top pixel
of the screen). Note there
are only 64 vertical pixels
Offset is the
number of pixels
from the bottom of
the screen the min
value for this trace
will be displayed
at. The range for
this field is 0…64,
with 32 being the
middle of the
Rate the CIA will be polled, in 10 mSec
increments
The value is the trigger
point; this is the raw value
obtained by reading the
CIA for the selected trace.
This could be trace
1…4
Positive Slope: the
raw value (obtained
by reading the CIA
for the trace) moving
from below the
Programmed Value
to equal or above the
Programmed Value.
Negative Slope =
Position value is 0 …128 (128 pixels
across the screen) 64 = 50%
Position is the location
on the screen at which
the trigger point will be
displayed when the
trigger condition is
found.