Rs485 Communication - Ginlong Solis-75K-5G-US Installation And Operation Manual

4. Comm. & Monitoring
There are 5 communication terminals on Solis inverter. COM1 is a4-pin connector
reserved for Solis WiFi/Cellular datalogger. COM2 and COM3 are RS485 connection
between inverters and both RJ45 and Terminal block are provided for use .
COM4 and COM5 are the Ethernet connection via RJ45.
Monitoring system for multiple inverters
Multiple inverters can be monitored through RS-485 and Ethernet daisy chain configuration.
PV Strings
Inverter
PV Strings
Inverter
PV Strings
Inverter
Figure . Multiple inverter monitoring system 4 1

4.1 RS485 communication

RS-485 communication supports two connections methods: RJ45 connectors/ Terminal board
1. RS-485 communication through RJ45 connector
RJ45 port connection (See figure 4.2).
CAT 5E outdoor rated (cable outer diameter<9mm, internal resistance≤1.5Ω/10m) and
shielded RJ45 connectors are recommended.
Ethernet IN
Ethernet OUT
Figure 4.2 RJ45 port
.26.
PC monitoring
Datalogger
Internet
DC
RS485/Ethernet
485-IN
485-OUT
4. Comm. & Monitoring
Use the network wire stripper to strip the insulation layer off the communication cable.
Using the standard wire sequence referenced in TIA/EIA 568B, separate the wires in the cable.
Use a network cable tool to trim the wire. Flatten the wire in the order shown in figure 4.3.
RJ45terminal
1--8
RJ45 plug
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
R S 4 8 5 + A R S 4 8 5 - B
Figure 4.3 Strip the insulation layer and connect to RJ45 plug
2. RS-485 communication through terminal board.
The cross sectional area of the conductor wire for terminal board connection should be
0.2-1.5mm.
The outer diameter of the cable may be 5mm-10mm.
NO.
1
2
3
4
1 2 3 4
Figure 4.4
Connection of Terminal board.
a. Strip the insulation and shield to a suitable length. Use diagram below as a guide.
(in Figure 4.5).
b. Remove the cap nut from the waterproof cable glands labeled at the bottom of the inverter.
Remove the plug from the fitting. (in Figure 4.6).
Correspondence between the
cables and the stitches of plug
Pin 1: white and orange ; Pin 2: orange
Pin 3: white and green； Pin 4: blue
Pin 5: white and blue； Pin 6: green
Pin 7: white and brown； Pin 8: brown
Pin 1 with 4 and 2 with 5 are
used for communication connection
Pin 1 and 4 are connected with RS485+A
Pin 2 and 5 are connected with RS485 - B
Port definition Description
RS485A1 IN RS485A1,RS485 differential signal+
RS485B1,RS485 differential signal-
RS485B1 IN
RS485A2,RS485 differential signal+
RS485A2 OUT
RS485B2,RS485 differential signal-
RS485B2 OUT
.27.