KL400x - Single-, Dual and Four-Channel Analog Output Terminals, 0 V to 10 V

Basic function principles

The analog KL400x output terminals generate signals in the range 0 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).
 
 

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).

 
Output voltage
Process data
dec
hex
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_dac = X
(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_h
Manufacturer scaling: Offset
A_h
Manufacturer scaling: Gain
B_w
User scaling: Offset
A_w
User scaling: Gain
Y_dac
Output value for the D/A converter
-

The equations of the straight line are enabled via register R32.