Siemens SIMATIC S7-GRAPH Manual page 166

Overview of All Actions
Action
Event Instruction Assignment
V1: Arithmetic in actions linked to supervision errors entering the state
V1 N A:=B
A:=func(B)
A:=B<operator>C
V1 NC A:=B
A:=func(B)
A:=B<operator>C
V1: Arithmetic in actions linked to supervision errors leaving the state
V0 N A:=B
A:=func(B)
A:=B<operator>C
A1:Arithmetic in actions linked with a message acknowledgment
A1 N A:=B
A:=func(B)
A:=B<operator>C
A1 NC A:=B
A:=func(B)
A:=B<operator>C
R1: Arithmetic in actions linked to setting a registration
R1 N A:=B
A:=func(B)
A:=B<operator>C
R1 NC A:=B
A:=func(B)
A:=B<operator>C
13-24
Explanation
As soon as a supervision error occurs while the step is
active or a supervision error had been detected before the
step became active, the arithmetic is executed.
As soon as a supervision error occurs while the step is
active or a supervision error had been detected before the
step became active and the condition (interlock) is satisfied,
the arithmetic is executed.
As soon as a supervision error leaves the state (is
eliminated or acknowledged), the arithmetic is executed.
As soon as a message is acknowledged, the arithmetic is
executed.
As soon as a message is acknowledged and the condition
(interlock) is satisfied, the arithmetic is executed.
As soon as a registration is set, the arithmetic is executed.
As soon as a registration is set and the condition (interlock)
is satisfied, the arithmetic is executed.
S7-GRAPH for S7 300/400 Programming Sequential Control Systems
C79000-G7076-C526-01