Beckhoff KL3302, Documentation

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Access from the user program
KL3311, KL3312, KL3314 and KL3302 42 Version: 4.2
Feature bit no. Description of the operation mode
Bit 0 1
User scaling ( R33, R34 [
}
42] ) active [0]
Bit 1 1
Manufacturer scaling ( R19, R20 [
}
41] ) 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]
Signed amount representation is active instead of two's complement rep-
resentation. (-1 = 0x8001).
Bit 4 1 Siemens output format [0]
This bit is used for inserting status information on the lowest 3 bits (see
below).
Bit 5 1 Activates filter constant in R37 [0]
Bit 6 1 Deactivates the measuring current for open-circuit recognition
Bit 7 - Reserved, don't change
Bit 8 1
Reference temperature switched off [0] ( R21 [
}
41] ).
Bit 9 - Reserved, don't change
Bit 10 1 Checking of the lower measuring range limit not applicable. [0]
Bit
15 14 13 12 Element Valid measuring range
0 0 0 0 Type: L -25°C to 900°C
0 0 0 1 Type: K -100°C to 1370°C
0 0 1 0 Type: J -100°C to 1200°C
0 0 1 1 Type: E -100°C to 1000°C
0 1 0 0 Type: T -100°C to 400°C
0 1 0 1 Type: N -100°C to 1300°C
0 1 1 0 Type: U -25°C to 600°C
0 1 1 1 Type: B 600 °C to 1800 °C
1 0 0 0 Type: R 0 °C to 1700 °C
1 0 0 1 Type: S 0 °C to 1700 °C
Output in µV
Resolution
Valid measuring range
1 1 0 1 1 µV* 1.6 µV** ± 30 mV
1 1 1 0 2 µV* 3.2 µV** ± 60 mV
1 1 1 1 4 µV* 6.4 µV** ± 120 mV (± 80 mV for KL3314)
*) no scaling active
**) only vendor scaling active
Examples:
Bit 15 to 12: 1111, no scaling active:
The output format is as follows: 1 digit is equivalent to 1/16 °C or 4 µV.
Bit 15 to 12: 1111, only vendor scaling activated via bit 1 of the Feature register:
The output format is as follows: 1 digit is equivalent to 1/10 °C or 6.4 µV.
If the Siemens output format is selected, the lowest three bits are used for status evaluation. The process
data is mapped 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 [ } 42] ).
Measured value Bit 15…3 Bit 2
X Bit1
Error Bit 0
Overflow
Out of range 0 0 1
In range Process data 0 0 0
• R33: User scaling - offset (B_w)
16-bit signed integer
This register contains the offset of the user linear equation (
Eq. 1.7 [
}
14] ). The linear equation is
enabled via register R32 [ } 42] .