Basic Instructions (Keyence)

INPUT INSTRUCTIONS

Contact instructions are using as ladder diagram input. It can be external inputs or internal relay inputs or internal timer inputs or other internal inputs. Basically the contact instructions are divide into two types which are normally open contact (N.O.) and normally close contact (N.C.).
1. Normally open contact (N.O.)
A normally open contact is a contact that turns ON when a switch or other input device turns ON.

2. Normally close contact (N.C.)
A normally close contact is a contact that turns OFF when a switch or other input device turns ON.

OUTPUT INSTRUCTIONS

Output instructions are using as ladder diagram output. It can be external outputs or internal relay outputs. The output instructions are divide into two types which are normally open output and normally close output.
1. Normally open output
A normally open output is a output that turns ON when the circuit is switch ON.

2. Normally close output
A normally close output is a output that turns OFF when the circuit is switch ON.

EXAMPLE

NORMALLY OPEN CIRCUIT

1. When the N.O. input relay 00000 turns ON, the N.O. output relay 01000 will turns ON simultaneously.

2. When the N.O. input relay 00000 turns OFF, the output relay 01000 will turns OFF simultaneously.

NORMALLY CLOSE CIRCUIT

 

1. When the N.C. input relay 00000 turns ON, the N.O. output relay 01000 will turns OFF simultaneously.

2. When the N.C. input relay 00000 turns OFF, the output relay 01000 will turns ON simultaneously.