12. Programming using the programming menus
12.4.6 Reference channel 1
The calculating functions of the function channels usually refer to one (or two)
particular measuring channel(s) (see 12.3.10, Manual 6.3.4). When program-
ming a function channel the reference channel M
b1
is is provided automatically
by the 1st channel of the associated sensor connector M
xx
1
. The 2nd reference
channel M
b2
(for differential value, average value M(n), etc.) is provided initially
by measuring point M00. In the function
Reference channel 1
you can also
set another measuring point as reference channel - either one specified mea-
suring point or an unspecified measuring point chosen according to the dis-
tance relative to the function channel (where -01 is the channel in front of the
function channel).
Programming reference channel 1, absolute :
1 Reference channel 1: 01
Programming reference channel 1, relative :
1 Reference channel 1: -10
12.4.7 Reference channel 2 or multiplexer
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 cases the
Multiplexer
function can be used to change
the input multiplexer and thus the pin assignment in the connector (see Manual
6.10.2).
Programming reference chan. 2, absolute :
1 Reference channel 2: 00
Programming reference chan. 2, relative:
1 Reference channel 2: -01
Measuring inputs B+ and A-, GND-referred
1 Multiplexer: B-A
Measuring inputs C+ and A-, GND-referred
1 Multiplexer: C-A
Measuring inputs D+ and A-, GND-referred
1 Multiplexer: D-A
Differential measuring inputs C+ and B-
1 Multiplexer: C-B
Differential measuring inputs D+ and B-
1 Multiplexer: D-B
12.4.8 Element flags
Element flags are available per measuring channel; these can be activated to
implement sensor-specific extra functions (see Manual 6.10.3).
Measuring current 1/10 for Pt1000, 5000
W
:
Element flags: I 1/10
(Flag 2:) *
Element flags: IR
Measuring bridge with switch for final value simulation :
Element flags : Bridge
Digital channel, cyclic evaluation only:
Element flags: Cyclic
To deactivate electrical isolation (see 8.4):
Element flags: Iso OFF
(Flag 6:) *
Element flags: Flag 6
To deactivate sensor breakage detection :
Element flags: Br OFF
To switch analog output from 0-20 mA to 4-20 mA :
Element flags: A 4-20
*
With ALMEMO 5690-2M this element flag is of no significance.
74 ALMEMO
®
5690-2M