Siemens Logo! Manual page 182

LOGO! functions
Symbol in
LOGO!
MI = Configured time interval
MN= Time-to-go
OT= Total time expired since the last hi signal at input Ral
These values are always retentive!
174
Wiring
Parameter MI: Maintenance interval to be
OT: Start time for OT
Q!0:
S
S
Output Q The output is set when the
time-to-go MN = 0 (see timing
diagramm).
The output is reset:
S
S
Description
preset in hour units
Range of values:
0000...9999 h
Range of values:
00000...99999 h
When "R" is selected:
Q = 1, if MN = 0;
Q = 0, if R = 1 or Ral = 1
When "R+En" is se-
lected:
Q = 1, if MN = 0;
Q = 0, if R = 1 or Ral = 1
or En = 0.
When "Q!0:R+En", if
R = 1 or Ral = 1 or En = 0
When "Q!0:R", if R = 1 or
Ral = 1.
LOGO! Manual
A5E00380835-01