Rockwell Automation D64046.5.1 U MNL WIN DDMC - Manual (Page 118)

Chapter 8
Debugging Your DDMC32 System
8-8
You can perform the following tasks from the Step History screen:
If you want to: Press this key:
Begin monitoring the current instruction. [F1] - Start History
Stop monitoring the current instruction. [F2] - Stop History
Display data continuously on the screen as new
data is collected. If new data is generated faster
that the display can be updated, eventually the data
buffers overflow and “Data Overrun” is displayed. [F3] - Contin Mode
Display data one page at a time. Press Next Page
or Previous Page to scroll through the data. [F4] - Paged Mode
Specify a starting point at which to activate the timer
and display. When the SDS instruction is in the
specified step, the timer is waiting for a transition
from the step. When this occurs, the timer is set to
zero and the display screen is activated, logging all
steps from that point on. [F5] - Step Trigger
Store the step history on disk. [F8] - Write to Disk
Using the Input History
The input history shows inputs in your SDS and DFA instructions as they
transition, and the time it takes each input to transition. The input history
is similar to the step history.
Use the input history to determine if inputs are transitioning at the right
time or taking too long to transition.
See page 8–9 for an example of an input history for a transfer line station.