Beckhoff KL304 Series Documentation

Access from the user program
KL304x, KL305x 37Version: 4.0
Feature bit no. Description of the operation mode
Bit 0 1
User scaling (R33, R34 [}37]) active [0]
Bit 1 1
Manufacturer scaling (R19, R20 [}36]) active [1]
Bit 2 1 Watchdog timer active [1]
In the delivery state, the watchdog timer is switched on.
Bit 3 1 Sign / amount representation [0]
Sign / amount representation is active instead of two's-complement
representation. (-1=0x8001).
Bit 4 1 Siemens output format [0]
This bit is used for inserting status information on the lowest 3 bits (see
below).
Bits 5 to 7 - Reserved, don't change
Bit 8 1 Over range Protection [1]
If values exceed or fall below the limits of the registers OVRL (R21 [}36])
and UNRL (R22 [}36]), the status bits are set and the measuring range is
restricted accordingly.
Bit 9 1 Limit value 1 active [0]
The process data are compared with limit value 1 (R35 [}37]), and
appropriate status bits are set.
Bit 10 1 Limit value 2 active [0]
The process data are compared with limit value 2 (R36 [}38]), and
appropriate status bits are set.
Bit 11 1 Filter1 active [0]
For filter properties, see R37 [}38]
Bits 12 to 15 - Reserved, don't change
If the Siemens output format is selected, the lowest threebits are used for status evaluation. The process
data is represented in bits 15 to 3, with bit15 representing the sign bit. Scaling of the measured value
according to the Siemens standard has to be done via user scaling (R33, R34 [}37]).
KL3041, KL3042 and KL3044
Measured value Bits 15 to 3 Bit 2
X
Bit1
Error
Bit 0
Overflow
Measured value > 20mA 0 0 1
Measured value <20mA Process data 0 0 0
KL3051, KL3052 and KL3054
Measured value Bits 15 to 3 Bit 2
X
Bit1
Error
Bit 0
Overflow
Measured value > 20mA 0 0 1
4mA < measured value
<20mA
Process data 0 0 0
Measured value < 4mA Process data 0 1 1
• R33: User scaling - offset (B_w)
16bit signed integer
This register contains the offset of the user straight-line equation (Eq. 1.4 [}12]). The straight-line
equation is activated via register R32 [}37].
• R34: User scaling - gain (Aw_)
16bit signed integer*2
-8
This register contains the scale factor of the user straight-line equation (Eq. 1.4 [}12]). The straight-line
equation is activated via register R32 [}37].
• R35: Limit value 1 (Y_2)
If the process data are outside this threshold, the appropriate bits are set in the status byte.

Beckhoff KL304 Series Specifications

General

Brand	Beckhoff
Model	KL304 Series
Category	Touch terminals
Language	English