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166
FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
6 What to Understand before Programming
6.2 Cautions on Creation of Fundamental Programs
6.2.3 Circuits which cannot be programmed and countermeasures
1. Bridge circuit
A circuit in which the current flows in both directions should be changed as shown in the figure on the right (so that a
circuit without D and a circuit without B are connected in parallel).
2. Coil connection position
• Do not write a contact on the right side of a coil.
• It is recommended to program a coil between contacts first.
The number of steps can be saved when a coil (E) between the contacts A and B is programmed first.
A B
F
C
E
D
C E
F
A
B
A E
C
D
A B
C
D
E
A
B
E
C
D