Manual

Manual – TopCon TC.GSS
Analogue interface
Versatile Limit Switch (VLS)
Each threshold can also be assigned a hysteresis range above or below
a threshold value.
A value of zero will deactivate the hysteresis.
Programmable switching delays help to suppress brief irrelevant transients
(settling processes, pulses).
Due to the cyclical digital sampling, rapid changes (duration < 50μs) on
the signals monitored may not be detected in some circumstances.
Exceeding or dropping below a threshold
Output quantity Output quantity
active area
unchanged (Hysteresis > 0)
unchanged (Hysteresis < 0)
inactive area
1
switching
threshold
upper
threshold
switching
threshold
Fig. 64 VLS functions:
Exceeding the threshold -1-
Dropping below the threshold -2-
Entering a window/leaving a window
inactive area
unchanged (Hysteresis > 0)
unchanged (Hysteresis < 0)
active area
Output quantity Output quantity
active area
unchanged (Hysteresis > 0)
unchanged (Hysteresis < 0)
inactive area
unchanged (Hysteresis > 0)
unchanged (Hysteresis < 0)
active area
1
switching
threshold
upper
threshold
switching
threshold
switching
threshold
lower
threshold
switching
threshold
Fig. 65 VLS function:
Leaving a window -1-
Entering a window -2-
2011-10-18 127 / 298 V00.05b
2
inactive area
unchanged (Hysteresis > 0)
unchanged (Hysteresis < 0)
active area
unchanged (Hysteresis > 0)
unchanged (Hysteresis < 0)
inactive area
2
7
switching
threshold
lower
threshold
switching
threshold
switching
threshold
lower
threshold
switching
threshold
switching
threshold
upper
threshold
switching
threshold