The Instruction Set; Contacts; Coils - GE VersaMax PLC User Manual

8.4 The Instruction Set

–| |– Normally Open
–|/|– Normally Closed
<+>–––
Continuation
–( )– Normally Open
–(/)–
–(□)–
–(□)–
–(S)–
–(R)–
–(SM)–
Retentive SET
–(RM)–
Retentive RESET
–(/M)–
–(M)–
–––<+>
Elements of an Application Program
For public disclosure
The VersaMax PLC CPU provides a powerful Instruction Set for building application
programs.
As a guide to the programming capabilities of the VersaMax PLC, all of the relays, coils,
functions, and other elements of the Instruction Set are summarized on the following
pages. Complete reference information is included in the documentation and online help
for the programming software.

8.4.1 Contacts

Passes power if the associated reference is ON.
Passes power if the associated reference is OFF.
Passes power to the right if the preceding continuation coil is set ON.

8.4.2 Coils

Sets the associated reference ON if the coil receives power.
Otherwise OFF.
Sets the associated discrete reference ON if the coil does not receive
Negated
power. Otherwise OFF.
If power flow was OFF to this coil the last time it was executed and is
Positive
ON this time, then the coil is turned ON. Otherwise, the coil is turned
Transition
OFF.
If power flow was ON to this coil the last time it was executed and is
Negative
OFF this time, then the coil is turned ON. Otherwise, the coil is turned
Transition
OFF.
Sets the associated discrete reference ON if the coil receives power. It
SET
remains set until reset by an –(R)– coil.
Sets the associated discrete reference OFF if the coil receives power.
RESET
It remains reset until set by an –(S)– coil.
Sets the associated reference is set ON if the coil receives power. The
reference remains set until reset by an –(RM)– coil. Its state is
retained through power failure and STOPTORUN transition.
Resets the associated discrete reference OFF if the coil receives
power. The reference remains reset until set by an –(SM)– coil. Its
state is retained through power failure and STOPTORUN transition.
Sets the associated discrete reference ON if the coil does not receive
Negated
power. The state is retained through power failure and STOPTORUN
Retentive
transition. Otherwise OFF.
Sets the associated discrete reference ON if the coil receives power.
Retentive The state is retained through power failure and STOPTORUN
transition. Otherwise OFF.
If power to the coil is ON, the continuation coil sets the next
Continuation continuation contact ON. If power is OFF, the continuation coil sets the
next continuation contact OFF.
GFK-1503E User Manual 107