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SR2MAN01 11/2007
Data Entry Rules Make sure you respect the following rules when you enter a ladder diagram:
Rules Incorrect Correct
Each coil must only be
entered once in the right
hand column
Elements used as
contacts may be entered
as many times as
necessary in the 5 left
hand columns.
Links must always run
from left to right.
If S coils (SET) are used in
a diagram, also use an R
(Reset) coil.
If no R (Reset) coils are used,
the corresponding coil will
always be set to 1.
An R (Reset) coil must be used
for reset purposes.
Note: Smart relays run programs from top to bottom and from left to right.
I1-------------[Q1
Z1
T1-------------[Q1
I2-I3----------TT1
I1-------------[Q1
Z1
I2-I3----------TT1
T1
I1-------------TT1
I1-M2----------[Q2
I3-T1----------[M2
T1-------------[Q1
I1-I2-I3
I4-I5-I6-[Q1
--
I1-I2-I3-------[M1
M1----I4-I5-I6-[Q1