Output Function; Reference Channel 1; Reference Channel 2 Or Multiplexer - Ahlborn ALMEMO 2590-2A Operating Instructions Manual

Output function

13.12.5
If the current measured value of the measuring point (Mxx) is not actually
needed but only the maximum, minimum, average, or alarm value, this function
can be programmed as output function (see Manual 6.10.4). Saving, analog
output, and digital output will then only process the specified function value. As
verification for the output function being thus changed the measured value is
shown with the symbols listed below (see 9.2).
Examples
1. If measured values are being averaged over the cycle the only output value
of interest is the average value itself, not the last measured value. With a
data logger this saves memory capacity.
2. The analog measured value from dew sensor FH A946-1 is not really signif-
icant. I you set limit value, maximum to approx. 0.5 V and program the "alarm
value" function, you will then only receive the values 0.0% for dry and 100.0%
for dew.
Output function
Measured value (Mxx)
Difference (Mxx - M00)
Maximum value (Mxx)
Minimum value (Mxx)
Average value (Mxx)
Alarm value (Mxx)

Reference channel 1

13.12.6
The calculating functions of the function channels usually refer to one (or two)
particular measuring channel(s) (see 13.10, Manual 6.3.4). When programming
a function channel the reference channel M
1st channel of the associated sensor connector M
nel M (for differential value, average value M(n), etc.) is provided initially by
b2
measuring point M00. In the function
another measuring point as reference channel - either one specified measuring
point or an unspecified measuring point chosen according to the distance rela-
tive to the function channel (where -01 is the channel in front of the function
channel).
Programming reference channel 1, absolute : 1 Reference channel 1:
Programming reference channel 1, relative : 1 Reference channel 1:

Reference channel 2 or multiplexer

13.12.7
With those function channels needing a 2nd reference channel (see above)
Reference channel 1 is followed automatically by the function Reference
channel 2 . In all other normal measuring ranges the Multiplexer function can
be used to change the input multiplexer and thus the pin assignment in the con-
nector (see Manual 6.10.2).
Programming reference channel 2, absolute :
Programming reference channel 2, relative :
Verification symbols
D
H
L
M
A
Reference channel 1
13. Sensor programming
Menu
Output function: Meas
Output function : Diff
Output function : Max
Output function : Min
Output function : M(t)
Output function : Alrm
is is provided automatically by the
b1
. The 2nd reference chan-
xx
1
1 Reference channel 2:
1 Reference chan.
you can also set
01
-10
00
2: -01
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