{"id":346,"date":"2025-09-02T10:58:25","date_gmt":"2025-09-02T10:58:25","guid":{"rendered":"https:\/\/docs.qilowatt.eu\/docs\/goodwe-et-et-plus\/"},"modified":"2025-10-30T10:03:26","modified_gmt":"2025-10-30T10:03:26","password":"","slug":"goodwe-et-et-plus","status":"publish","type":"docs","link":"https:\/\/docs.qilowatt.eu\/en\/docs\/goodwe-et-et-plus\/","title":{"rendered":"GoodWe ET \/ ET Plus"},"content":{"rendered":"\n

Introduction<\/h2>\n\n
GoodWe ET and ET Plus hybrid inverters can be connected to the Qilowatt system via Modbus communication. This guide explains the necessary preparations, RS485 wiring, inverter settings, and operating modes. <\/div>\n\n

Prerequisites<\/h2>\n\n
\u2022 Inverter and battery firmware are updated (latest version must be used)\u2022 A Modbus module is available\u2022 Required tools and a communication cable (CAT5 or CAT6)\u2022 A Qilowatt account has been created and the app is ready for adding devices \u2192 Creating a user account<\/a><\/div>\n\n

Step-by-step Guide<\/h2>\n\n

1. Preparation<\/h3>\n\n
\u2022 Update the inverter and battery firmware<\/strong> before connecting.\u2022 Ensure the device has the latest firmware<\/strong>, since Qilowatt always relies on the newest Modbus protocol.<\/div>\n\n

2. RS485 connections<\/h3>\n\n
\n
GoodWe ET 5\u201310 kW hybrid inverter (COM port):<\/strong>\u2022 Pin 1 \u2192 RS485 A1\u2022 Pin 2 \u2192 RS485 B1Use Pin 1 (A) and Pin 2 (B) to connect the Qilowatt device. Note: Before installation, make sure the device has a Data port.<\/strong> <\/div>\n\n\n\n
\"\"<\/div>\n<\/div>\n\n
\n
GoodWe ET 15\u201330 kW hybrid inverter (EMS port):<\/strong>\u2022 Pin 1 \u2192 RS485 A\u2022 Pin 2 \u2192 RS485 B\u2022 Pin 4 \u2192 GND\u2022 Pin 5 \u2192 CAN_L\u2022 Pin 6 \u2192 CAN_HUse Pin 1 (A) and Pin 2 (B) to connect the Qilowatt device. <\/div>\n\n\n\n
\"\"<\/div>\n<\/div>\n\n

3. Inverter settings<\/h3>\n\n
\u2022 Modbus address:<\/strong> 247 (default)\u2022 Baud rate:<\/strong> 9600 (default)If needed, the Modbus address can be changed via the GoodWe SEMS<\/strong> or Solar-Go<\/strong> apps.<\/div>\n\n

4. Operating modes<\/h3>\n\n
\u2022 Set the inverter to Self-use<\/strong> mode (in older systems called General<\/em>).\u2022 Disable all modes that prevent external control:TOU<\/strong> (time-of-use)ECO<\/strong>Peak Shaving<\/strong>All remote controls<\/div>\n\n

5. Why is a firmware update necessary?<\/h3>\n\n
Qilowatt always uses the manufacturer\u2019s latest Modbus protocol. If the inverter or battery firmware is not updated, control may not work correctly. <\/div>\n\n

Result<\/h2>\n\n
The GoodWe ET \/ ET Plus inverter is successfully configured and connected to the Qilowatt system. The module transmits data and enables inverter control and energy optimization. <\/div>\n\n

If it Doesn’t Work<\/h2>\n\n
\u2022 If communication does not work, check the RS485 connections and confirm that the port is available.\u2022 If control does not function, make sure the inverter is in Self-use mode and that all other modes (TOU, ECO, Peak Shaving) are disabled.\u2022 If the Modbus address is incorrect, change it using the SEMS or Solar-Go app.\u2022 If the issue persists, contact our team: support@qilowatt.eu<\/a>. <\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_gspb_post_css":"#gspb_heading-id-gsbp-44f305d,#gspb_heading-id-gsbp-ec3d15b{font-size:var(--wp--preset--font-size--medium)!important}#gspb_heading-id-gsbp-44f305d{margin-top:20px}#gspb_heading-id-gsbp-f45fa70{font-size:var(--wp--preset--font-size--medium)!important;margin-top:20px}#gspb_image-id-gsbp-7b2d1dd img,#gspb_image-id-gsbp-c958d97 img{vertical-align:top;display:inline-block;box-sizing:border-box;max-width:100%;height:auto}#gspb_heading-id-gsbp-01271fd,#gspb_heading-id-gsbp-8bc6974,#gspb_heading-id-gsbp-903e541,#gspb_heading-id-gsbp-9342a3d,#gspb_heading-id-gsbp-97cb393{font-size:18px;margin-top:20px;margin-bottom:10px}#gspb_heading-id-gsbp-0e81270,#gspb_heading-id-gsbp-bfa484e{font-size:var(--wp--preset--font-size--medium)!important;margin-top:20px}.gspb_text-id-gsbp-620919e{margin-top:0!important}","footnotes":""},"doc_category":[190,145],"doc_tag":[128,153,139,146,127,126,133],"class_list":["post-346","docs","type-docs","status-publish","hentry","doc_category-3-inverter-installation-pick-the-right-one","doc_category-inverter-installation","doc_tag-connection","doc_tag-goodwe","doc_tag-installation","doc_tag-inverter","doc_tag-modbus-r1","doc_tag-modbus-r2","doc_tag-setup"],"blocksy_meta":[],"year_month":"2026-04","word_count":343,"total_views":0,"reactions":{"happy":0,"normal":0,"sad":0},"author_info":{"name":"Qilowatt Support","author_nicename":"birgit-ertelqilowatt-eu","author_url":"https:\/\/docs.qilowatt.eu\/en\/author\/birgit-ertelqilowatt-eu\/"},"doc_category_info":[{"term_name":"3. Inverter Installation - pick the right one","term_url":"https:\/\/docs.qilowatt.eu\/en\/dcategory\/3-inverter-installation-pick-the-right-one\/"},{"term_name":"Inverter installation","term_url":"https:\/\/docs.qilowatt.eu\/en\/dcategory\/inverter-installation\/"}],"doc_tag_info":[{"term_name":"connection","term_url":"https:\/\/docs.qilowatt.eu\/en\/dtag\/connection\/"},{"term_name":"goodwe","term_url":"https:\/\/docs.qilowatt.eu\/en\/dtag\/goodwe\/"},{"term_name":"installation","term_url":"https:\/\/docs.qilowatt.eu\/en\/dtag\/installation\/"},{"term_name":"inverter","term_url":"https:\/\/docs.qilowatt.eu\/en\/dtag\/inverter\/"},{"term_name":"modbus R1","term_url":"https:\/\/docs.qilowatt.eu\/en\/dtag\/modbus-r1\/"},{"term_name":"modbus R2","term_url":"https:\/\/docs.qilowatt.eu\/en\/dtag\/modbus-r2\/"},{"term_name":"setup","term_url":"https:\/\/docs.qilowatt.eu\/en\/dtag\/setup\/"}],"_links":{"self":[{"href":"https:\/\/docs.qilowatt.eu\/en\/wp-json\/wp\/v2\/docs\/346","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/docs.qilowatt.eu\/en\/wp-json\/wp\/v2\/docs"}],"about":[{"href":"https:\/\/docs.qilowatt.eu\/en\/wp-json\/wp\/v2\/types\/docs"}],"author":[{"embeddable":true,"href":"https:\/\/docs.qilowatt.eu\/en\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.qilowatt.eu\/en\/wp-json\/wp\/v2\/comments?post=346"}],"version-history":[{"count":1,"href":"https:\/\/docs.qilowatt.eu\/en\/wp-json\/wp\/v2\/docs\/346\/revisions"}],"predecessor-version":[{"id":347,"href":"https:\/\/docs.qilowatt.eu\/en\/wp-json\/wp\/v2\/docs\/346\/revisions\/347"}],"wp:attachment":[{"href":"https:\/\/docs.qilowatt.eu\/en\/wp-json\/wp\/v2\/media?parent=346"}],"wp:term":[{"taxonomy":"doc_category","embeddable":true,"href":"https:\/\/docs.qilowatt.eu\/en\/wp-json\/wp\/v2\/doc_category?post=346"},{"taxonomy":"doc_tag","embeddable":true,"href":"https:\/\/docs.qilowatt.eu\/en\/wp-json\/wp\/v2\/doc_tag?post=346"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}