Rockwell Automation 2706-LV2P_LV2R_LV4P_LV4R DL40 PLUS USER MANUAL - Manual (Page 56)

Offline Operating Modes 4–3
Publication 2706-6.1
Resetting the Stack
Each time a new application file is downloaded using the Download
to DL40 Plus menu option (Offline Programming Software), the
stack is reset. All previous stack data is lost.
Triggering special message number 909 also resets the stack with a
loss of all previous stack data.
When the Run mode is changed, you must also reset the Historical
Stack.
Historical Recall
The Historical Recall mode is entered from Run mode by pressing
[CTRL] [S] on the DL40 Plus Keyboard Port or by pressing the
[SELECT] and [
↵
] push buttons on the front panel of the DL40 Plus.
Pressing the [ESC] or [MSG ACK] key immediately returns you from
any point in the Historical Events mode to the previous menu level.
View the Stack
You can view the Historical Events Stack in either chronological
order or relative frequency of occurrences.
Chronological Order
When the Historical Events Stack is viewed in chronological order in
Message/Variable/Slave, Message/Variable, and Message List Run
modes, the newest information placed on stack will be displayed
first; the oldest will be displayed last. To view the next screen of
stack data, press any key on the keyboard or
[SELECT] or [
↵
] push
buttons on the front panel.
Events are displayed in the following format:
– Message Number
– Message Text (including variables, time, date)
– TRIGGERED (if time stamped and if time between triggering
and display more than 1 minute) hour:minute:second month
date year *
– Status
RAN
hour:minute:second month date year*
SENT TO SLAVE: XXX
hour:minute:second month date year*
NOT RUN
ADDED
* If Time attribute is set.