Growatt MOD Series | EPSherpa Documentation

EMS Devices PV Hybrid And Battery Inverters Growatt

Supported Devices

Device Type	Manual	Modbus TCP (Ethernet)	RS485	Curtailment	Reactive power control
MOD 3-10K-TL3-XH	Manual	❌	✅	✅	—
MOD 3-15K-TL3-X	Manual	❌	✅	✅	—

Wiring

RS485 - MOD 3-10K-TL3-XH

RS485 Wiring

For correct RS485 wiring: follow the RS485 wiring guidelines.
If the wiring shown in the table below is incorrect, please let us know.
There is no general industry consensus on the use of A and B for RS485 polarity, so the naming may be counterintuitive for some devices.

Device	EPSherpa EMS model OM1	EPSherpa EMS 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

Last updated October 26, 2026

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Supported Devices Wiring RS485 - MOD 3-10K-TL3-XH RS485 - MOD 3-15K-TL3-X

RS485 Wiring

Device	EPSherpa EMS model OM1	EPSherpa EMS 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