Basic Function Principles - Beckhoff KL403 Series Documentation

Product overview
2.3

Basic function principles

The KL403x analog output terminals generate signals in the range -10 V to +10 V with a resolution of 12 bits
(4095 steps). The output voltage is electrically isolated from the K-Bus.
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 [} 38]).
Process data input format
In the delivery state the process data are shown in two's complement form (integer -1 corresponds to
0xFFFF). Alternative presentation types can be selected via the feature register (R32 [} 38]).
Output value
-10 V
-5 V
0 V
5 V
10 V
Process data
The process data arriving from the Bus Coupler are output to the process:
Y_dac = X
Y_1 = B_h + A_h * X
Y_dac = Y_1
Y_2 = B_w + A_w * X
Y_dac = Y_2
Y_1 = B_h + A_h * X
Y_dac = B_w + A_w * Y_1
Key
Name
X
B_h
A_h
B_w
A_w
Y_dac
The equations of the straight line are enabled via register R32 [} 38].
12
Process data
dec
(-32767)
(-16383)
(0)
(16383)
(32767)
(1.0) Neither user nor manufacturer scaling is active.
(1.1) Manufacturer scaling active
(1.2) User scaling active
(1.3) Manufacturer and user scaling active
(1.4)
Name
PLC process data
Manufacturer scaling: Offset
Manufacturer scaling: Gain
User scaling: Offset
User scaling: Gain
Output value for the D/A converter
Version: 4.1
hex
0x8001
0xC001
0x0000
0x3FFF
0x7FFF
Register
-
R19 [} 38]
R20 [} 38]
R33 [} 38]
R34 [} 39]
-
KL403x