Festo CP-AM-MEAS, Оригинальная инструкция по эксплуатации, Страница: 38 / 94

Design and function
38
© Festo Didactic 8154245 en
distance sensor IO-Link Device ET200SP 1512SP F-1PN or IM155-6PN HF
U = 0 V
h = 0 mm
A/D-converter = 12 Bit,
voltage measuring range U = 0…10 V:
10 V ➔ 4096 units (idealized)
0 V ➔ 0 units (idealized)
standa rdization to the range h=0…40 mm with module Scale_xBit
(FC105):
iBit = 12; rHI_LIM = 40.0; rLO_LIM =
-10.0
➔
rOUT = 0.0
U = 10 V
h = 40 mm
A/D-converter = 12 Bit,
voltage measuring range U = 0…10 V:
10 V ➔ 4096 units (idealized)
standardization to the r ange h=0…40 mm with module Scale_xBit
(FC105):
iBit = 12; rHI_LIM = 40.0; rLO_LIM =
-10.0 ➔ rOUT = 40.0
The distance sensor emits a red laser beam with the wavelength
λ
= 650 nm which meets the measuring
zone, where it is scattered. The distance sensor recognizes the change of position Δz‘ of the reflected light
spot on its detector. On the basis of the taught-in measuring area and the therefore defined linear
characteristic curve, it emits a voltage value U = 0...10 V.
After tapping, the voltage is supplied to the IO link device which converts the voltage to a basic value
represented in the nominal range
0…4095 by means of a 12-Bit A/D-converter. The now digitalized basic
value is transferred to the IO link master by means of a IO-Link point-to-point connection and afterwards
forwarded to the CPU. In the CPU, the basic value is scaled to the height h = 0...40 mm with the function
Scale_xBit_1_10V (FC105).