EPEVER RS485-1M2S Extension Module User Manual

: June 10, 2024
: EPEVER

Table of Contents

Overview
Appearance
Pin definition for the RS485 communication port
Accessories
Connection Diagram
Specifications
Dimensions
References
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EPEVER RS485-1M2S Extension Module User Manual

※ Thank you for choosing the RS485-1M2S extension module.
※ Please read this manual carefully before using the product.

Overview

The RS485-1M2S extension module is an optional accessory that can extend the RS485 communication port of our solar controller/inverter. Based on the standard Modbus protocol, the user can monitor the operating status and set parameters through the monitoring devices connected to the RS485-1M2S extension module. The RS485-1M2S main port 1-1 and 1-2 are connected in parallel, which can connect 1 or 2 slave devices, such as a solar controller/inverter. And the RS485-1M2S slave port 2 and 3 are independent, which can connect 1 or 2 monitoring devices at the same time, such as remote meter/WIFI module/Bluetooth module/PC software, etc.

Features:

Extend the RS485 communication port of the solar controller/inverter
Data interaction between the solar controller/inverter and monitoring devices
Standard Modbus communication protocol
One key to set the communication baud rate
LED screen

Appearance

Communication status Indicator
Green ON solid — RS485-1M2S standby Green flashing — RS485-1M2S communicating Red flashing — RS485-1M2S baud rate setting
Mounting Hole 2-φ4.8mm
Power Indicator
Green ON solid –Power supply normal
RS485 slave port 2 (RJ45)
RS485 slave port 3 (RJ45)
Port ④ and ⑤ are independent, which can connect monitoring devices such as remote meter/WIFI module/Bluetooth module/PC software etc.
Set button
9600 – Communication status red indicator flashes once 115200-Communication status red indicator flashes twice Long press the Set button to set the communication baud rate of RS485- 1M2S, which is consistent with the communication baud rate of the connected controller/inverter.
Auxiliary port for external power(5.08-2P)
DC power range: DC 8-70V DC power source: Battery
Function: When the power consumption of the external monitoring device is large, an external power connected to the auxiliary port can be used to power the device. Detail scenarios are as follows. Scenario| Device (main port)| Device (slave port)| External power
---|---|---|---
1| Only controller/ only inverter| MT75+WIFI/ BlueTooth+WIFI/ eLog+WIFI| Yes
2| Controller + inverte| MT75+WIFI/ BlueTooth+WIFI/ eLog+WIFI| No
3| Only controller/ only inverter/ controller + inverter| MT75/BlueTooth/ eLog/WIFI| No
RS485 main port 1-1(RJ45)
RS485 main port 1-2(RJ45)
Port ⑧ and ⑨ are connected in parallel, which extend the RS485 communication port by connecting the solar controller/inverter.

Pin definition for the RS485 communication port

RJ45

1/2	5VDC
3/4	RS485-B
5/6	RS485-A
7/8	GND

Accessories

Included Accessories| RS485 cable(length: 1.5m) Model: CC- RS485-RS485-150U| 2 pcs
---|---|---
5.08-2P terminal| 1 pcs
Optional Accessories| RS485 adapter(length: 1.5m) Model: CC-USB- RS485-150U| 1 pcs

Connection Diagram

Note: When the power consumption of the external monitoring device is large, an external power connected to the auxiliary port can be used to power the device.