Siemens LOGO!, Manual

Page: 240 / 534

LOGO! functions
4.4 Special functions list - SF
LOGO!
240
Manual, 04/2011, A5E03556174-01
Special function Parameter or process variable visible in a
message text
Stopwatch TB, Ta, Lap, AQ
Counter
Up/down counter
Cnt, On, Off
Hours counter MI, Q, OT
Threshold trigger f
a
, On, Off, G_T
Analog
Analog threshold trigger
On, Off, A, B, Ax
Analog differential trigger On, n, A, B, Ax, Off
Analog comparator On, Off, A, B, Ax, Ay, nA
Analog watchdog n, A, B, Ax, Aen
Analog amplifier A, B, Ax
Analog multiplexer V1, V2, V3, V4, AQ
Analog ramp L1, L2, MaxL, StSp, Rate, A, B, AQ
PI controller SP, Mq, KC, TI, Min, Max, A, B, PV, AQ
Mathematic instruction V1, V2, V3, V4, AQ
PWM (Pulse Width Modulator) A, B, T, Ax amplified
Miscellaneous
Latching relay
-
Pulse relay -
Message texts -
Softkey On/Off
Shift register -
Analog filter Sn, Ax, AQ
Max/Min Mode, Min, Max, Ax, AQ
Average value Ax, St, Sn, AQ
For timers, a message text can also display the remaining time. "Remaining time" refers to
how much time of the parameter setting remains.
Bar graphs can be either horizontal or vertical representations of the current or actual value
scaled between the minimum and maximum value. For more information on configuring and
displaying bar graphs in message texts, refer to the LOGO!Soft Comfort online help.