Beckhoff KL3102, Документация

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Access from the user program
KL3102, KL3112, KL3122 39 Version: 3.2
• R34: User scaling - gain (A_w)
16 bit signed integer*2
-8
This register contains the scaling factor of the user straight-line equation ( Eq. 1.4 [
}
14] ). The straight-
line equation is enabled via register R32 [
}
38] .
• R35: Limit value 1 (Y_2)
[0x0000]
If the process data are outside this threshold, the appropriate bits are set in the status byte.
• R36: Limit value 2 (Y_2)
[0x0000]
If the process data are outside this threshold, the appropriate bits are set in the status byte.
• R37: Filter constants of the A/D converter, and configuration bits for the filter
(default value: 35C0
hex
)
The terminal has two low-pass filter stages:
◦ The first stage consists of a sinc
3
filter, and is always active.
◦ The second stage consists of a 22
nd
order FIR filter. This can be deactivated.
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Name Filter constant Nf (Nf.11 to Nf.0) Zero Zero Skip Fast
Key
Bit Name Description Default
R37.15 Filter constant Nf
(Nf.11 - Nf.0) The filter constant Nf specifies the 3dB limit frequency of the sinc
3
filter. The value ranges from 150 to 2047.
The 3 dB limit frequency F
Limit
and the 64.5 dB stop frequency F
Stop
are calculated as follows: (see following table)
35C
hex
(860
dec
)
...
R37.4
Skip = 0 F
limit
= 11981 / Nf
F
stop
= 43008 / Nf
Skip = 1 F
limit
= 81076 / Nf
Bit Name Description Default
R37.3 Zero 0
bin
See note below 0
bin
R37.2 Zero 0
bin
0
bin
Do not change
Bits R37.2 and R37.3 must always be ZERO, otherwise errors will occur in the A/D converter!
Bit Name Description Default
R37.1 Skip 0
bin
FIR filter is enabled. 0
bin
1
bin
FIR filter is bypassed.
R37.0 Fast 0
bin
Fast Step Mode is disabled. 0
bin
1
bin
Fast Step Mode is active: a fast reaction will follow jumps at
the input, in spite of the filter stage being active. In this case
the filter is bypassed!