Omron CS Series Operator's Manual

Step Run and Break Section 4-3
103
4-3 Step Run and Break
The Step Run allows to debug by step, which was impossible in debugging
using an actual CS/CJ PLC.
In addition, combining execution with a break/start point specified, and break
with I/O memory conditions (I/O break conditions) specified will allow closer
debugging.
The Step Run is available only for a program on the program area for appli-
cations (UM1), not for debugging (UM2).
4-3-1 Operations for Step Run
Peripheral Servicing
The Ladder Engine accepts and process FINS commands even during a cy-
cle execution as long as it is during pausing (e.g. Step Run).
This enables monitoring the values during a cycle execution, which is usually
impossible.
Online Editing
When performing Online Editing to the Ladder Engine during Step Run or
pausing during a cycle, the program execution returns to the status just prior
to the cycle start and pauses (when set as Online Editing enabled for Scan
Rerun/Step Run).
Cycle Time during Step Run
The cycle time during Step Run (including pausing), for both virtual cycle time
and computer cycle time, does not include the time of pausing. Similarly, the
Timer, Clock Pulses, etc. do not operate during pausing. However, only the
time clocks the actual time if set as "computer cycle time." If set as " virtual
cycle time", the time stays unchanged during pausing because the time ac-
cumulates the virtual cycle time.
4-3-2 Break Setting
Start point Break point I/O Break Condition
The Number of settings One point 32 points max One condition
For applications program
area (UM1)
Usable
For debugging program
area (UM2)
Unusable
When online
editing
Clear Clear only the break
points in the changed
task.
No changeAction
when a
program
changed
When down-
loading
Clear All clear No change
Operation after execution Clear setting after execu-
tion
No change (Continuous
setting)
After the break condition
is met, the values of I/O
memory area within the
conditions are reevaluated
only when they have
changed.
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Omron CS Series Specifications

General

Brand	Omron
Model	CS Series
Category	Network Hardware
Language	English