Siemens SIMATIC S7-GRAPH - Page 81

Programming Actions and Conditions
S7-GRAPH for S7-300/400 Programming Sequential Control Systems
C79000-G7076-C526-01
7-5
Supervision
•
V1: Supervision error occurred (disturbance)
•
V0: Supervision error cleared (no disturbance)
1
0
t
V1
V0
Disturbance
Interlock
•
L0: Interlock condition entering state
•
L1: Interlock condition leaving state (for example disturbance)
•
C: Interlock condition is satisfied
1
0
t
L0
L1
[C = 0]
Message and Registration
•
A1: A message is acknowledged
•
R1: A registration is set
(rising edge at input REG_EF / REG_S)
1
0
t
A1=1
Event-Dependent Actions - with and without Interlock
All standard actions with the exception of actions containing the D and L
instructions can be logically combined with an event.
Event Instruction Address
Identifier
Address
Location
Meaning:
S1, V1, A1,
R1
N[C], R[C], S[C]
CALL[C]
Q,I,M,D,
FB, FC, SFB,
SFC
m.n
block number
After the event is detected [and the
interlock is active], the following
applies to the next step cycle:
• Address has signal state 1 (N) once
• Address set to signal state 0 (S)
once
• Address set to signal state 0 (R)
once
• Block is called once (CALL)