User Manual

Control concept
Superposed plant controls
5
CM110664en_07 75 | 353
The block CMD_CTL controls and monitors output and value blocks mapped on
BACnet. Communications is based on BACnet referencing rather than
interconnections to optimize the costs of engineering. The following blocks can
be used with CMD_CTL: AO, BO, MO and AVAL, BVAL and MVAL.
The sequence is determined in the CMD_CTL in a table. The command for the
individual aggregates and the components can be determined based on the
plant operating mode.
The main functionality of the block CMD_CTL is the sequential control of
aggregates and components dependent on the preset plant operating mode
[ValPgm]. For this purpose the switch-on sequence is defined by the order in
the function table [FnctTb]. The switch-off sequence is the reverse of the
En
Sched
Cp:BSCHED
OpModMan
Cp:MVAL_OP
O&M
OpModSwi
Cp:MI
E,H
E,U
FireDet
Cp:BI
E,U
SmextSu
Cp:BI
SmextEh
Cp:BI
E,U
OpMSwiCnv
Ax: DMUX8_BO
On On On Frost
EmgOff SmextSu SmextEh SmextPrg
En
En
DefVal:Off
En En En En En En En En En
Sequence table
On
EmgOff
On/P14
ErcRo On/P14
DmpShof Open/P14
P
l
t
C
t
l
C
p
:
C
M
D
_
C
T
L
CM
D
_
C
T
L
TOa
TSu
TSu
TOa
Frost
SttUpMod
Cp: V(A) StupPrg
DmpMx
Ag: DmpMx
DmpShofOa
Ag. DmpShof
T
S
u
On
EnCrit
OpSta
EnCrit
F
a
n
S
u
A
g
:
V
(
A
,
C
-
F
)
F
a
n
1
S
t
O
n
E
n
C
r
i
t
E
n
C
r
i
t
O
p
S
t
a
D
m
p
S
h
o
f
E
h
A
g
:
D
m
p
S
h
o
f
F
a
n
E
x
A
g
:
V
(
A
,
C
-
F
)
F
a
n
1
S
t
Tsu
C
c
l
A
g
:
C
c
l
T
A
-
T
r
a
n
s
p
o
r
t