
10.STEP SEQUENCE FUNCTION B-63983EN/02
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10.6 STEP SEQUENCE SCREEN OPERATION
10.6.1 Displaying a Step Sequence Diagram
The following operations are supported to enable the diagnosis and
debugging of a step sequence program.
· Displaying a step sequence and editing a ladder
· Displaying the execution state of a step sequence
· Monitoring the run time of the step sequence program
A step sequence can be operated using the PMC ladder menu.
The PMC ladder menu is used to display PMC ladder related screens
such as a program list screen and ladder diagram display/editor
screen.
The screen display can be switched to the PMC ladder menu by
operating the <SYSTEM> key then the [PMC LADDER] soft key as
shown below.
PMC main menu
LIST
LADDER
PMC LADDER
<
Program list screen
Ladder display/editor screen
PMC ladder menu
SYSTEM
Pressing the [LADDER] soft key displays a sequence program
dynamically to enable operation monitoring. On the editor screen,
modifications can be made to relays and function instructions of a
sequence program to change the operation of the sequence program.
The ladder diagram display/edit function consists of the following
screens:
(1) Ladder diagram display screen (ladder diagram monitor screen)
Displays a ladder diagram and monitors the current state of
relays/coils.
(2) Selection monitor screen
Displays a selected ladder net only and monitors the current state
of relays/coils.
(3) Ladder diagram editor screen
Used to edit a ladder on a net-by-net basis.
(4) Net editor screen
Used to edit the contents of a net in a ladder.
(5) Program list display screen
Used to select a subprogram to be displayed on the ladder
diagram display screen.