Growatt WIT Serie | a-tronix Documentation

Geräte PV-Hybrid- und Batterie-Wechselrichter Growatt

Unterstützte Geräte

Device Type	Manual	Modbus TCP (Ethernet)	RS485	Curtailment
WIT 100K-TL3-H	Manual	✅	✅	✅
WIT 15K-HU		✅	✅	✅

Verkabelung

RS485 - MID 100K-TL3-H

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Unterstützte Geräte Verkabelung RS485 - MID 100K-TL3-H

Growatt WIT Serie | a-tronix Documentation

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	a-TroniX Controller model OM1	a-TroniX Controller model IG8	RS485-USB converter	RS485-Ethernet converter
RS485 A1	RS485 A	RS485_POS	RS485 A	TX+
RS485 B1	RS485 B	RS485_NEG	RS485 B	TX-
N/A	RS GND	GND	Not available	G