plug-in
Cod. +030221881 rel. 1.5 - 26/10/10
44
8.3.4 Parameters - description
The HACCP module uses some parameters from the plug-in instrument and its own parameter for the alarm recognition algorithm,
and produces a set of variables for recording the HA and HF events if these occur. It also features parameters for setting the clock
and entering up to eight defrost events at programmed times.
All the parameters can be displayed and modified using the
display and the buttons on the connected plug-in instrument. The
parameters can be accessed using the t parameter on the plug-in
instrument; when displaying the parameters some segments of
the left-most digit are used as indicated in the figure.
The display and modification procedures are the same indicated
in the paragraph on accessing and modifying the t parameters of
the RS485 serial module.
8.3.5 Parameters of the plug-in instrument
parameters type min max uom def
SET control set
oint
- -50 127
C/F
4
AH
hi
h tem
erature alarm threshold F 0 127
C/F
0
Ad
tem
erature alarm dela
time C 0 199 min. 0
Tab. 8.3.5.1
SET: value of the control set point of the plug-in instrument
This is read directly from the value set on the instrument.
AH: value of the high temperature alarm threshold
This is read directly from the value set on the instrument. Together with the set point it determines the value of the temperature
threshold for the detection of alarms HA and HF (respectively high temperature and power failure alarms).
Threshold = SET+AH.
Warning: AH = 0 disables the detection of the alarms.
Ad: Value of the temperature alarm detection delay
This is read directly from the value set on the instrument. It is used together with parameter tr in the HACCP module to determine
the value of the delay in recognising the HA alarm event.
8.3.6 HACCP module parameters
left segment code parameter description min max uom def
tu
da
of the week of the internal cloc
17- 1
th
hour of the internal cloc
0 23 hours 0
t’
minutes of the internal cloc
059min0
tr HA alar
dela
0 127 min 0
to
lobal reset of alarms HA and HF
01-0
t1-8
defrost da
of the week 0 10 - 0
t1-8
defrost hours 0 23 hours 0
t1-8
defrost minutes 0 59 min 0
Tab. 8.3.6.1
tu: day of the week of the internal clock
Displays/Sets the day of the week for the clock. The possible values are from 1 to 7, corresponding to Monday, ..., Sunday in
order.
th: hours of the internal clock
Displays/Sets the current hours for the clock. Values from 0 to 23.
t': minutes of the internal clock
Displays/Sets the minutes for the clock. Values from 0 to 59.
The setting of the internal clock is important for the correct recording of the HA and HF alarms, the times of which are also
recorded.
4
2
5
1
3
Fig. 8.3.4.1
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