Rockwell Automation D64046.5.1 U MNL WIN DDMC User Manual

Page 62

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Configuring SDS Instructions

Chapter 4

4-26

6.

Cursor to the output field and press

[F9] - Output State.

This key toggles the cursored output state which will be applied for
control between ON, OFF, and LAST (no changes).

7.

Press

[F6] - Step Timer.

The system prompts you to enter your step timer preset value and your
destination step number. The destination step number can be:

a

step

an error step

a warning (The instruction displays a Warning message without

stopping the program execution. For example, a warning message can
be displayed to notify the operator that a transition is taking too long.)

INIT (Initialize). Do not confuse INIT with Step 0 (Initialization) on

the step directory. These steps react differently, as noted below:

INIT vs. Step 0

If you specify this

destination:

This happens:

INIT

Outputs remain in their current state. The step timer is disabled. For
two program scans and beginning at Step 1, the system searches all
normal steps with defined input transitions, looking to match current
input states with expected input states. When current inputs match
expected inputs, that state is entered. If no match is found in two
program scans, the program enters Step 0.

Important: INIT can not enter an error step or step with no defined
input transitions.

Step 0

All outputs are turned off. Starting at Step 1, the system searches all
steps with defined input transitions, looking to match current input
states with expected input states. When current inputs match
expected inputs, the program enters that step; otherwise it stays in
Step 0. You cannot configure Step 0.

Important: Step 0 can enter a status step or error step, unless the
step has no defined input transitions.

ATTENTION: Because the instruction does not recognize
transitions when in INIT, outputs may stay on for up to 2 program
scans.

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