Beckhoff KL3208-0010 Documentation page 41

R39: Further elements
Register R39 is supported by KL3208-0010 from firmware version 1C and hardware version 01
(Default: 0 )
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Setting R39 increases the conversion time to one second per channel
As soon as register R39 is not equal to 0 for one channel of the terminal, the conversion time for all
channels is increased to about 1 second per channel, automatically and irrespective of the sensor
type, in order to optimize the measuring accuracy. The conversion time for all channels can be com-
monly set via register R40 of channel 1. A reduction is not recommended due to loss of accuracy.
Value in R39
0x0032 50
dec
0x0033 51
dec
0x0034 52
dec
0x0035 53
dec
0x0036 54
dec
0x0037 55
dec
0x0038 56
dec
0x0039 57
dec
0x003A 58
dec
0x003B 59
dec
0x003C 60
dec
0x003D 61
dec
0x003E 62
dec
0x0064 100
dec
0x0065 101
dec
0x00C8 200
dec
0x00FF 255
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Avoid the mixed operation of low-resistance PT/NI sensors and high-resistance NTC
sensors on one terminal
Due to large differences in the resistances of the sensor types, the mixed operation of low-resis-
tance PT/NI sensors and high-resistance NTC sensors on one terminal should be avoided, since
larger measuring errors can then occur for the PT/NI sensors.
R40: Conversion time for all channels
You can specify the conversion time for all channels of the terminal with register R40 of the first channel
(default: 10 , approx. equal to 120 ms per channel).
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R41: B-parameter for user-defined NTC
This register contains the B-parameter of a user-defined NTC (default: 3960
The user-defined NTC can be activated by setting register R39 to 255
R42: Resistance at 25 °C for user-defined NTC
The resistance is specified in 10 Ω / digit. 1000
(Default: 1000 = 0x03E8).
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R43: Reference temperature for user-defined NTC
(Default: 25 °C = 0x0019)
R44: Lower range limit for user-defined NTC
(Default: -40 °C = 0xFFD8)
R45: Upper range limit for user-defined NTC
(Default: 130 °C = 0x0082)
KL3208-0010, KL3228-0000,
KS3228-0000
Element
NCT1K8
NCT1K8_TK
NCT2K2
NCT3K
NCT5K
NTC10K
NTC10KPRE
NTC10K_3204
NTC10KTYP2
NTC10KTYP3
NTC10KDALE
NTC10K3A221
NTC20K
Potentiometer, resolution
0.1 Ω
Potentiometer, resolution 1
Ω
NTC100K
user-defined NTC
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Version: 3.1.0
Measuring range
-40°C ... 130°C
-30°C ... 150°C
-50°C ... 130°C
-50°C ... 80°C
-40°C ... 100°C
-30°C ... 150°C
-30°C ... 150°C
-40°C ... 110°C
-50°C ... 130°C
-50°C ... 130°C
-50°C ... 130°C
-40°C ... 130°C
-20°C ... 150°C
0 ... 5 kΩ
0 ... 10 kΩ
-40°C ... 130°C
.
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is thus equal to 10 kΩ
Access from the user program
R at 25 °C R at 0 °C
1.8 kΩ 4940 Ω
1.8 kΩ 5200 Ω
2.2 kΩ 7373 Ω
3.0 kΩ 9822 Ω
5.0 kΩ 16325 Ω
10 kΩ 32650 Ω
10 kΩ 29490 Ω
10 kΩ 27080 Ω
10 kΩ 32770 Ω
10 kΩ 29588 Ω
10 kΩ 32660 Ω
10 kΩ 32639 Ω
20 kΩ 70200 Ω
- -
- -
100 kΩ 3266 kΩ
= 0x0F78).
dec
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