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Insert a basic network

When developing an LD network, first a basic network consisting of one contact, one coil and two power rails must be inserted. Then, this basic network can be expanded by further parallel/serial contacts/coils or other graphical objects such as functions and function blocks.

FBD/LD code worksheets

  1. Left-click into the code worksheet at the position where you want to place the network.
  2. Left-click the in-place button or the corresponding button on the editor's toolbar. Alternatively, press <F8>.

    A basic network with a left and right power rail and a contact and coil is inserted. Although the LD objects have identifiers (C001 and C002), no relating variables are yet declared.

  3. Insert/declare variables for the contact and coil as described in the procedure "Assign variables/constants to an LD object" (see below).

NOLD and SNOLD code worksheets

In NOLD and SNOLD, an entire code section is inserted with a new network, bordered by the horizontal section bar at its top.

  1. Left-click anywhere below the lowest existing section.
  2. Left-click the in-place button or the corresponding button on the editor's toolbar. Alternatively, press <F8>.

    A basic network with a left and right power rail and a contact and coil is inserted. Although the LD objects have identifiers (C001 and C002), no relating variables are yet declared.

  3. Insert/declare variables for the contact and coil as described in the procedure "Assign variables/constants to an LD object" (see below).