Satec Expertmeter PM180, Справочное руководство

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Figure 62 - Negated contact
3.10.5 Coil
Coil represents a normally inactive coil, energized whenever its rung is
closed. (Inactive at rest)
It has 2 pins:
 Input pin (left pin) - can be attached to contact, negated contact,
built-in function block, input variable, input-output variable.
 Output pin (right pin) – can be attached only to right rail.
Multiple connections are allowed.
Coil can be created only from an output variable or a local variable.
Figure 63 - Coil
3.10.6 Negated coil
Negated coil represents a normally active ("not") coil, energized
whenever its rung is open. (Active at rest)
It has 2 pins:
 Input pin (left pin) - can be attached to contact, negated contact,
built-in function block, input variable, input-output variable.
 Output pin (right pin) – can be attached only to right rail.
Multiple connections are allowed.
Negated coil can be created only from an output variable or a local
variable.
Figure 64 - Negated coil
3.10.7 Creating LD
Let ’ s create a simple ladder diagram that contains several contacts and
coils.
To create a contact you need to drag-and-drop a variable to the
workspace.