Inovance H3U Series - Page 30

29
2
2 Pre-programming Precautions
2.3 Introduction to AutoShop
( )
ķ LD
ĹOR
Ļ OUT
ĺANB
( )
ķ LD
ĸ OR
ĺ OUT
Ĺ AND
ANB instruction
not required
ĸ LD
c) Dual-coil solution
( )
M0
M4
M1
M2
M3
( )
Ignored
Or
M4M2
M3
M0 M1
( )
( )
M0
M4
M1
M2
M3
( )
M100
M101
( )
Y0
Y0
Y0
Y0
M100
M101
The dual-coil design does not go against the project editing rule, but the output status may not be what the
user expects. Because the actual port I/O status of the PLC is refreshed when the project is nished, only
the last status of the project is refreshed, and intermediate status changes cannot be shown. To show I/O
status change in the same scan cycle, you need to use the REF instruction.
Execution sequence and steps of a PLC project
The project is processed from top to bottom and from left to right.