Rockwell Automation 1772-L8_LW_LWP_LX_LXP,D17726.5.8 User Manual - Manual (Page 133)

RelayĆLike Instructions
Chapter 9
9-7
Keystrokes
Enter an Output Latch or Unlatch instruction by performing the
following steps.
1. Press either –(L)– or –(U)– as required.
2. Enter <address>.
Important: You can initially condition the latch or unlatch instruction to
on or off by positioning the cursor over the Output Latch or Output
Unlatch instruction and pressing 1 or 0, respectively.
Editing in a Completed Rung
Edit an Output Latch or Unlatch instruction by performing the
following steps.
1. Position the cursor over the Output Latch or Unlatch instruction you
want to change.
2. Press either –(L)– or –(U)– or any other output instruction type
as required.
3. Enter <address>.
Important: If power is lost, all latch bits remain in their last state.
When power is restored, all outputs connected to latch bits are
energized immediately.
If power is lost but the processor battery back-up is maintained, all latched
bits retain their state before power was lost. When power is off, outputs
associated with the latched bits are off. When power is restored, all
outputs connected to latched bits are energized immediately (provided the
processor comes up in the Run/Program or Run mode).