3. BARGRAPH – PRINCIPLE OF OPERATION
The bargraph indication is connected with parameters
bG0 ÷ bG7
or with
rnGL,AL,SP1 ÷ SP4,AH
and
rnGH
(range, alarm levels and set-points) . This can be specified by
Syst,GF
parameter. In both
cases, in order to function properly the indication are given descending and ascending values. For
example at
Syst,GF=1 - bG0≤bG1≤bG2.... ≤bG7 / bG0≥bG1≥bG2.... ≥bG7
. The device does not
check layout. If necessary points of AH and AL are automatically exchanged (at rnGL> rnGH) in the
order shown in the figure.
For each zone between the set values can be specified color by parameter
coL1 ÷ 7
. It can be color of
a zone – there will be a colorful view or color of a column - as a whole will change its color
according to PV (parameter
Syst, GC
).
By
SySt.GP
parameter the mode 'lighting column' / 'lighting point' is determined.
When a LED is between two color zones when changing PV it would change its color, thereby
slightly expands one zone at the expense of the other. This can be enabled / disabled by
SySt.G1
.
Monochrome bargraph functions as a color bargraph with two possible colors.
ConF, Gh=0
or
Gh=1
from menu „
OTHER SERVICE PARAMETERS“
indicates color or
monochrome bargraph will be used.
The bargraph can be switched off by
bLEd=0
from menu „
Service parameters
“
The display is limited in the range -1999 ÷ +9999, beyond which blinks (┌ - - ┐ or └ - - ┘).
If the process variable is within the measurement limits but is out of range (
par. rnGL, rnGH
)
values alternate with
┌ - - ┐-
over the range or
└ - - ┘-
below the range.
Document revision 2015-03-20
11
MEASURED VARIABLE (PV)
LED display
LED bargraph
3 colors
bG0
bG1
bG2
bG3
bG4
bG5
bG6
bG7
rnGL
AL
SP1
SP2
SP3
SP4
AH
rnGH
SYSt,GF=1
SYSt,GF=0
AOut
4-20mA
