Midea V8 PRO Series - Page 46

43
IDU and ODU type
HyperLink (M1 M2) communication
RS-485 (P Q) communication
RS-485 (P Q E) communication
Optional communication mode
between the IDU and ODU
All IDUs and ODUs are V8 series
At least one IDU or ODU is not V8 series
Communication mode Type of wire
Number of cores and
wire diameter (mm
2
)
Total length of
communication line (m)
HyperLink (M1 M2) communication
(The IDUs in a system can be powered
separately)
HyperLink (M1 M2) communication (All
IDUs in a system must be powered
through a uniform power supply)
HyperLink (M1 M2) communication wiring configuration – IDUs uniform power supplied
PVC-sheathed
copper-core flexible
shielded cable
Ordinary PVC-sheathed
flexible cable
Ordinary PVC-sheathed
flexible cable
PVC-sheathed
copper-core flexible
shielded twisted pair
3х0.75
2х1.5
2х0.75
2х0.75
L≤1200
L≤2000
L≤1200
L≤600
(2 repeaters are required)
RS-485 (P Q E) communication
RS-485 (P Q) communication
Table 5.8 Communication mode
Table 5.9 Communication wiring material
L1+La+Ln≤2000m. Communication wiring 2*0.75mm
2
M1
M2
Master ODU
M1
M2
L
N
···
2-(n-2)#IDU
M1
M2
L
N
Circuit breaker
N L
L1
La
Power wire
Communication wire
M1 M2
L
N
Ln
Distribution box
Distribution box
(n-1)# IDU
n# IDU
1# IDU
Figure 5.44
Communication protocol
V8 communication protocol
Non-V8 communication protocol