Trace Execution Screen - Mitsubishi Electric M800VW Series Manual

M800V/M80V Series PLC Development Manual
6 Explanation of Built-in Editing Function (PLC On-board)
6.17 Device Menus

6.17.4.6 Trace Execution Screen

Outline
The trace is executed and the results are displayed on this screen.
Start Trace
Stop trace
Execute trigger
Suspend monitor
Trace result
Note
(1) If the trace is already started, an error occurs and the trace execution cannot start.
(2) If the PLC stops, an error occurs and the trace cannot start.
(3) If the trace data (trace conditions and trace results) are not correctly set up, the trace cannot start. (An error message
appears.)
(4) The trace conditions are retained in the NC at the start of tracing.
If you start the on-board and open the sampling trace screen, the screen shows the retained conditions even after the NC
power OFF.
If you set the trace conditions, and then turn OFF the NC power before starting tracing, the previous conditions before the
setting are applied.
(5) If the trigger is not executed and exceeds the number of traces, the trace data will be cleared in the chronological order.
(6) When the trace point is "EACH HIGH SCAN", the available bit devices for the trace data are limited to 8 points or lower.
(If more than 8 point devices are set, the first 8 points are the target device for the trace.)
(7) When the trace point is "TRACE DATA CHANGE", the available devices for the trace data are limited to 8 points for a bit
device, and 2poins for a word device.
(8) The trace execution status is retained in the NC even after the NC power is turned OFF. Thus when you open the trace
execution screen, tracing may already have started.
(9) If the trigger is executed forcibly or the trigger is established with the set trigger point, the trace is executed for the number
of times of trigger. Therefore, the number of executed traces may be below the total number depending on the timing at
which the trigger is established.
This writes the trace conditions set by the On-board to the NC control unit automat-
ically, and starts the trace.
This stops the trace.
This enables the trigger to be executed forcibly from the screen.
Also, this enables the trigger to be executed forcibly when the trigger point setup is
"SPECIFIED DEVICES".
This performs the start or suspend the trace status monitor.
When closing the "TRACE EXECUTION" screen during the trace, the monitor indi-
cations are stopped automatically. If you want to display them again, press the
[START MONITOR] button.
This displays the "trace result display" screen.
537 IB-1501614-B