X100
P0
(1) Program operation for “ OT” in ladder diagram
Leading edge
Single scan
X101
P1
(2) Program operation for “ OT” in ladder diagram
Trailing edge
Single scan
Outputs to the pulse relay P0 only for a single scan where X100 changes from the
OFF state to the ON state (i.e., rises).
Also outputs to P0 even if X100 is ON for the first scan.
Outputs to the pulse relay P1 only for a single scan where X101 changes from the ON
state to the OFF state (i.e., falls).