Wiring with the logic relay821SVC 440 795 M0100Inserting and deleting a rungThe CL circuit diagram shows four of the 128 rungs in thedisplay at the same time. The logic relay automatically scrollsup or down the display to show hidden rungs – even emptyones – if you move the cursor past the top or bottom of thedisplay.A new rung is added below the last connection or insertedabove the cursor position:X Position the cursor on the first contact field of a circuitconnection.X Press ALT.The existing rung with all its additional connections is“shifted” downwards. The cursor is then positioned directlyin the new rung.Deleting a rungThe logic relay only removes empty rungs (without contactsor coils).X Delete all the contacts and relay coils from the rung.X Position the cursor on the first contact field of the emptyrung.X Press DEL.The subsequent rung(s) will be “pulled up” and any existinglinks between rungs will be retained.Switching with the cursor buttonsThe logic relay also allows you to use the four cursor buttonsas hardwired inputs in the circuit diagram.The buttons are wired in the circuit diagram as contacts P1to P4. The P buttons can be activated and deactivated in thesystem menu.I2u------ÄQ4I3kI2u------ÄQ4Â nI3kP1P2P3P4
