12)Coils labeled ( S ) and ( R ) A)may be used only in subroutines in programs for Siemens PLCs B)may be used instead of a seal-in arrangement to provide latching C)must appear in that order (S before R) in a ladder logic program D)are Short and Repeated coils, used in timing programs
12)Coils labeled ( S ) and ( R ) A)may be used only in subroutines in programs for Siemens PLCs B)may be used instead of a seal-in arrangement to provide latching C)must appear in that order (S before R) in a ladder logic program D)are Short and Repeated coils, used in timing programs
Chapter22: Sequence Control
Section: Chapter Questions
Problem 6SQ: Draw a symbol for a solid-state logic element AND.
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12)Coils labeled ( S ) and ( R )
A)may be used only in subroutines in programs for Siemens PLCs
B)may be used instead of a seal-in arrangement to provide latching
C)must appear in that order (S before R) in a ladder logic program
D)are Short and Repeated coils, used in timing programs
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