Rockwell Automation 1760-xxxx Pico Controller User Manual - Manual (Page 77)

Publication 1760-UM001D-EN-P - September 2005
Draw a Circuit Diagram with Pico 4-17
Relays with Raising Edge Function
Physical outputs should not be used when a cycle pulse is generated.
Maintained/Flip-Flop Relay
Instruction Type Representation in Pico
Marker Relay M, N È M1… È M16, È N1… È N16
Jumps И :1… И :8 (1760-L18xxx)
This function is used if the coil is only meant to
switch on a rising edge. WIth a change in the coil
state from open to closed, the coil switches its make
contacts to the closed state for one cycle.
on
on
Signal Diagram:
Input
Output
on
on
The relay coil switches state whenever the input signal changes
from 0 to 1. The relay behaves like a flip-flop.
Signal Diagram:
Input
Output