Precautions For Using A Function Block In Ladder Diagram - Mitsubishi Electric MELSEC iQ-F Series Programming Manual

Precautions for using a function block in ladder diagram

Precautions for directly connecting to an FB instance from the left rail
When EN and input variables (bit type) are directly connected to the left rail in the input circuit of the FB instance, the on/off
state does not change.
(1)
To change the on/off states of EN and the input variables (bit type), use a contact or an instruction equivalent to the contact.
(2)
(3)
(1): The on/off state does not change.
(2): Contact
(3): Instruction equivalent to a contact
5 LADDER DIAGRAM
5.1 Configuration
5
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