
Communication and Monitoring
31
8.2.2 RS485 Communication
RS485 is generally for at most 32 inverters communication at the same time. But the length of
communication wire should be≤1200m. You can read and analyse data by PC if the system is equipped
with Solar-Log200/500/1000. Please refer to Solar-Log200/500/1000 manual for more information.
Figure 23 RS-485 jack
Two types of cable must be prepared before using Solar-Log to monitor mult-inverters.
The communication cable between inverter and inverter:
1. Prepare two 8-PIN RJ45 modular plug, hold the RJ45 modular plug with the 'clip' on the bottom,
the 'opening' (where you insert the cable) facing you, the order number is 1 to 8 from left to right,
as figure 24.
Figure 24
2. Use a length of communication cable, then push the 8 color wires into the modular plug follow the
same order as below.
orange white
orange
green white
blue
blue white
green
brown white
brown
1
2
3
4
5
6
7
8
3. Then put the both ends of communication cable into the communication ports of inverter respectively.
If there are N inverters, need N-1 this communication cable.
G/ GB/ Br/BrO/ O B
1234
T-568B
5678
RJ-45 Plug
Pin 1
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