Creating an RS485 Bus Connection
The SMI can connect to other SolarEdge devices, such as other SMIs, or SolarEdge
control and communication gateways. The SMI can also connect to non-SolarEdge
devices, such as revenue grade meters or non-SolarEdge inverters and read their data
for display in the SolarEdge monitoring platform.
The RS485 option enables creating a bus of connected SMIs, consisting of one master
SMI and up to 31 slave SMIs. Using this option, the SMIs are connected to each other in
a bus (chain), via their RS485 connectors.
RS485 wiring specifications:
Cable type: Min. 3-wire shielded twisted pair (a shielded Ethernet cable (Cat5/5E
STP) may be used)
Wire cross-section area: 0.2- 1 mm²/ 24-18 AWG (a CAT5 cable may be used)
Maximum nodes: 32
Maximum distance between first and last devices: 1 km /3300 ft.
This section describes how to connect the RS485 bus and how to configure the bus.
The following menus can be used for RS485 port configuration.
RS485-1/2 Conf:
D e v i c e T y p e < S E >
P r o t o c o l < M >
D e v i c e I D < 1 >
S l a v e D e t e c t < # >
C l u s t e r S L V D e t e c t
L o n g S l a v e D e t e c t < # >
S l a v e L i s t < # >
M u l t i - I n v . S e t
Device Type:
SMI-180 Installation Guide MAN-01-00157-1.1
51
Creating an RS485 Bus Connection
S o l a r E d g e < M >
N o n - S E L o g g e r < S >
M u l t i D e v i c e s < M >
N o n e