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SDM-CD16
Control Port Expansion Module with Drivers
Heating
unit:
activate when
temperature <
23.5
lnput
lnput
oC.
Deactivate when
temperature >
25.5
oC
Location
Location
Label
Descriotion
1..5
Temp
#'1..#5
Avg temp,
Cooling unit:
activate when
temperature >
27.5
greenhouse
1..5
oC.
Deactivate when
temperature
<
24.5oC
10..14
Heat
#1..#5
Heater control,
greenhouse
1..5
Mixing fan:
activate when
ever
the
heating
or
SDM-CD16 Port
cooling
units
are
activated.
Activate
for
5
1..5
minutes out of every
15
minutes.
15..19
Cool
#1-#5
Cooler control,
greenhouse
1..5
The program assumes the
temperature
SDM-CD16 Port
measurements have been made, and the
average
6..10
temperature
for
each greenhouse
is
computed
20..24
Fan
#1,#5
Fan
control,
and residing in Input
Locations
1
through
5.
greenhouse
1..5
SDM-CD16 Port
Input Location assignments
are as
follows:
11..15
01:
P
87
Beginning
of
Loop
Master
Loop,
End
01: 0
Delay
Loop at
Step 30
02: 5
Loop
Count
START HEATER CONTROL LOGIC
O2:
P
89
lF
X<
=
>F
lF
'HEATER
ON'
01: 1--
X
Loc
THBESHOLD
lS
02: 4
<
EXCEEDED
03: 23.5
F
04: 30
Then
Do
THEN
03:
P 30
Z=F
01:
1
F
02:
0
Exponent
of
'l0
03: 10--
ZLoc:
04:
P 95
End
05:
P 89
IFX<=>F
01: 10--
XLoc
02:
2
<>
03:0F
O4: 30
Then Do
PUT
A'1'
INTO
HEATER
CONTROL
LOCATION
END THEN
DO/END
IF
THE
HEATER IS
HEAT
#1
ON
(HEATER
CONTROL
LOCATION
<>
o)
THEN
06:
P 89
lfX<=>F
01:
1--
X
Loc
TEMP
#1
CHECKUPPERTHRESHOLD
02:
3
>
=
TO
SEE
lF HEATER
SHOULD
03: 25.5 F
BE
TURNED OFF
04: 30
Then
Do
07:
P 30
Z=F
lF HEATER SHOULD
BE
TURNED
01:
0
F
OFF,
ENTER
A'}'INTO
02:
0
Exponent
of
10
HEATER CONTROL
LOCATION
03: 10-
ZLoc:
08:
P 95
End
END
THEN DO
/END
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