Siemens SIMATIC S7-GRAPH - Counters in Actions

Overview of All Actions
S7-GRAPH for S7-300/400 Programming Sequential Control Systems
C79000-G7076-C526-01
13-13
13.3 Counters in Actions
These actions are executed once when the event occurs and the corresponding
step is active. When the sequencer is run through after this, an event-dependent
action is executed again only when the event occurs again.
Action Explanation Address
range
Event In-
struc-
tion
Address
Area
Location
S1: Counters in actions linked with activation of a step
S1 CS C
<initial
counter
value>
X As soon as the step becomes active (enters
state), the initial counter value is loaded in the
counter.
x = counter
number
S1 CU C X As soon as the step becomes active (enters
state), the counter is incremented by 1.
x = counter
number
S1 CD C X As soon as the step becomes active (enters
state), the counter is decremented by 1.
x = counter
number
S1 CR C X As soon as the step becomes active (enters
state), the counter is reset to 0.
x = counter
number
S1 CSC C
<initial
counter
value>
X As soon as the step becomes active (enters
state) and the condition (interlock) is satisfied,
the initial counter value is loaded in the
counter.
x = counter
number
S1 CUC C X As soon as the step becomes active (enters
state) and the condition (interlock) is satisfied,
the counter is incremented by 1.
x = counter
number
S1 CDC C X As soon as the step becomes active (enters
state) and the condition (interlock) is satisfied,
the counter is decremented by 1.
x = counter
number
S1 CRC C X As soon as the step becomes active (enters
state) and the condition (interlock) is satisfied,
the counter is reset to 0.
x = counter
number
S0: Counters in actions linked with deactivation of a step
S0 CS C
<initial
counter
value>
X As soon as the step is deactivated (leaves
state), the initial counter value is loaded in the
counter.
x = counter
number
S0 CU C X As soon as the step is deactivated (leaves
state), the counter is incremented by 1.
x = counter
number