Rs485 Communication - Samil Power SolarRiver 3400TL-D Product Manual

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.
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.
2. Use a length of communication cable, then push the 8 color wires into the modular plug follow the
same order as below.
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.
Figure 23 RS-485 jack
Pin 1
RJ-45 Plug
Figure 24
1 orange white
2 orange
3 green white
4 blue
5 blue white
6 green
7 brown white
8 brown
T-568B
1 2 3 4 5 6 7 8
O/ O G/ B B/ G Br/ Br
Communication and Monitoring
31