Autarco LQ系列 RS485 接线

本页描述了通过 Modbus-RTU (rs485) 与 Autarco LQ 系列混合逆变器的通信。 默认情况下，逆变器设置为地址 1。RS485 接口是位于逆变器底部的一个 4 针连接器，位于保护板后面。准确位置在下面图片的橙色框中标记：

仔细观察，端口看起来是这样的：

应使用合适的连接器将 Autarco 逆变器上的这个 4 针连接器连接到 SmartgridOne Controller。 在 SmartgridOne Controller 上，可以将逆变器连接到 RS485 端口。接线如下：

RS485 Wiring

• For correct RS485 wiring: Follow the guidelines for RS485 wiring.
• If the wiring shown in the table below is incorrect, please let us know.
• There is no general consensus in the industry about the usage of A and B for the RS485 polarity, so it may be counterintuitive and opposite of what you might expect for some devices.

Device	SmartgridOne Controller model OM1	SmartgridOne Controller model IG8	RS485-USB converter	RS485-Ethernet converter
Pin 3	RS485 A	RS485_POS	RS485 A	TX+
Pin 4	RS485 B	RS485_NEG	RS485 B	TX-
N/A	RS GND	GND	Not available	G

NOTE: RS485 Device Addresses

• You MUST give each device on the RS485 bus a unique address. Check the manual of the device on how to do this.
• Use lower addresses first (1, 2, ...) because the SmartgridOne Controller will find them faster!
• For each device, it is generally recommended to stick with the factory default baud rate, parity, and stop bits. The SmartgridOne Controller will scan on those first.