Status View (Online) - Siemens SIMATIC S7-200 Manual

Status View (online)

In the example, switch S0 is connected to input
0.0.
If you now actuate the switch and observe the
program in ladder status view, the operations
which are passing current, i.e. are true, are
filled in gray.
The status of the operations is read out
cyclically from the PLC and updated on the
screen.
In this context, online means looking inside the
controller with a PC/ programming device in
order to view the current states and their cyclic
changes.
Very fast events cannot be tracked in this way, because the transfer time required to output the data
on the screen is too long.
In the representation type function block diagram (FBD) a status view is possible, too.
Hardware Software
Select the menu item Debug > Ladder Status
to activate the status view of the ladder diagram
type of representation.
You can now view the status of the operands in
the PLC.
Basic 1st Exercise
Settings Program
More
Appendix
Exercises
26