Chapter 10 Ladder Diagram 10.2 Creating a Ladder Diagram in ISPSoft 10.2.1 Creating a Contact, Coil & MPS The representations of contacts and the representations of coils in ISPSoft are listed below. 10.2.1.1 Inserting a Contact and Changing a Contact Type (1) Select a line, a contact, or a group of devices. Before users connect a contact to a group of devices in parallel or in series, they have to draw a frame round the group of devices. After users make sure of the position in which a contact will be inserted, they can click on the toolbar. (2) The mouse cursor appears as a contact when the mouse cursor is near the position in which a contact will be inserted.
If the mouse cursor is near a contact, a contact will be connected to the contact in parallel or in series. 10-7 Contact Normally-open contact Normally-closed contact Rising edge-triggered contact Falling edge-triggered contact Coil OUT SET Coil RESET