Beckhoff KL4132, Documentation

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Product overview
KL4132 10 Version: 3.0
2.3 Basic function principles
The KL4132 analog output terminal generates signals in the range from -10 V to +10 V. The terminal
supplies the output voltage with a resolution of up to 16 bits. The output voltage is output electrically isolated
from the terminal bus level.
The LEDs indicate the operating state of the associated terminal channels.
• green Run LED:
◦ On: Normal operation
◦ Off: Watchdog timer overflow has occurred. If no process data are transmitted by the Bus
Coupler for 100 ms, the green LEDs go out. The output assumes a user-specified voltage (see
Feature register [
}
30] ).
Process data input format
In the delivery state the process data are shown in two's complement form (integer -1 corresponds to
0xFFFF).
Output value Process data
dec hex
-10 V -32767 0x8001
-5 V -16383 0xC001
0 V 0 0x0000
5 V 16383 0x3FFF
10 V 32767 0x7FFF
Process data
The process data arriving from the Bus Coupler are output to the process:
Y_0 = B_a + A_a*X
Y_dac = Y_0 (1.0) Neither user nor manufacturer scaling is active.
Y_1 = B_h + A_h * X
Y_dac = Y_1 (1.1) Manufacturer scaling active
Y_2 = B_w + A_w * X
Y_dac = Y_2 (1.2) User scaling active
Y_1 = B_h + A_h * X
Y_dac = B_w + A_w * Y_1 (1.3)
(1.4) Manufacturer and user scaling active
Key
Name Name Register
X PLC process data -
B_a Hardware compensation offset
R17 [ } 29]
A_a Hardware compensation gain
R18 [
}
29]
B_h Manufacturer scaling: Offset
R19 [ } 29]
A_h Manufacturer scaling: Gain
R20 [
}
29]
B_w User scaling: Offset
R33 [
}
30]
A_w User scaling: Gain
R34 [ } 30]
Y_dac Output value for the D/A converter -
The equations of the straight line are enabled via register R32 [ } 30]