..
.
.
.-
.............
'APPLICATION EXAMPLES
[Building
Management
I
I
MELSECNET/B
data link control system application
I
Items controlled
Air conditioning (temperature, humidity), lighting
Overall aim
Air conditioning and lighting control for the complete building
Advantages
The AIS PLCs are installed locally on each floor and connected
to
each other using
economical twisted pair cabling, greatly reducing wiring costs.
Method
of
control description
Host
computer: Control and monitoring of the complete building
Master station PLC:
Local station PLCs:
Linking data transfer between the host computer and the
local station PLCs
Air conditioning and lighting control, temperature and
humidity monitoring
System configuration
MELSECNETlB
data
Iin
n
th
floor
Host
computer
2nd
floor
1
st
floor
PLC
system requirements
Master station:
1
x AISCPU Local stations:
1
x A1 SCPU
1
xAlS6IP 1 xAIS6lP
1
x
AlS38B
1
x A1 S38B
1
xAISJ71T21B 1 xA1SJ71T216
1
x
A1 SJ71 C24-RZ
1
x AI S62DA
n
x
AlSX- 1 x AIS64AD
n x AlSYz n x AISX-
n
x
AlSY-
(AI SJ71T21B
-
MELSECNETlB interface module, see page 23)
(AISJ71C24-R2
-
RS232C computer lonk module, see page 22)
134