Vigor VS Series - Special Notices about the SFC

X0
X3
X1
X4
S20 S30
S100
S40 S50
X0
X3
X1
X4
S20 S30
S40 S50
S10
T0
S10
T0•X0
S11
S12
T1•X0
S11
S12
T1
X0
S10
M0•M1
S11 S12
M0•M2
M0
M1 M2
S10
S11 S12
S10
S20
S30 S40 S50
S21 S31 S41 S51
X0
X1
X0
X2
X2
M0
M1
M3
X6
T0
T1
X7
T2
T3
X1
M2
S11
S10
S11
X0•X1 X0•X1 X0•X2 X0•X2
M0
M1 M2
M3
X6•T0 X6•T1 X7•T2 X7•T3
S20 S30 S40 S50
S21 S31 S41 S51
S100
S20 S30
S100
S40 S50
X0
S20 S30
X0
S40 S50
X0
X1
S20 S30
S101
S40 S50
X0
X1
S20 S30
S40 S50
S101 X1
X2
S20 S30
S200
S40 S50
X1
X2
S20 S30
S40 S50
X0
X0
98
4-3-4 Special Notices About the SFC
Virtual Step Virtual Step Virtual Step
In a SFC ow can be added with an empty step. Since the step is for connection only, it is called a Virtual Step.
Virtual Step
The SFC must use the Ladder Masters S (LMS) to compose and join that into the project, then could be loaded and
executed at the PLC. There are some rules about the state transfer. The merge operation must direct to a destination
step. Furthermore, any step must bind with one and only one transfer condition. Thus, it is necessary to modify an
unqualied SFC to meet the requirement.