# Connection EVCS to Cerbo **URL:** \ **Category:** EVCS\ **Tags:** gx\_device, vrm, cerbo\_gx, diy\ **Created:** [14 July 2025 08:28 UTC](https://community.victronenergy.com/t/connection-evcs-to-cerbo/39368 "2025-07-14T08:28:13Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![Heidehaas](https://avatars.discourse-cdn.com/v4/letter/h/e99b99/32.png) [@Heidehaas](https://community.victronenergy.com/u/Heidehaas)\ **Post date:** [14 July 2025 08:28 UTC](https://community.victronenergy.com/t/connection-evcs-to-cerbo/39368/1 "2025-07-14T08:28:13Z")
I purchased a Victron EVCS NS and installed it to mij WiFi. So far so good. I cannot connect it to my existing Cerbo GX. Same wifi, latest sw versions, modbus on. All boxes are ticked imo. Cannot find a GX device in settings. Received a w-104 warning, but Cerbo IP and VRM ID are correct. Any advise is welcome, because I am out of options. ---
**Author:** ![Nicolas](https://avatars.discourse-cdn.com/v4/letter/n/67e7ee/32.png) [@Nicolas](https://community.victronenergy.com/u/Nicolas)\ **Post date:** [14 July 2025 11:39 UTC](https://community.victronenergy.com/t/connection-evcs-to-cerbo/39368/2 "2025-07-14T11:39:22Z")
Hello @Heidehaas . Can you check if ModbusTCP activated on the Cerbo side. Settings-\>Integrations-\>Modbus TCP Server in the new interface or Settings-\>Services-\>Modbus TCP in the Clasic UI. ---
**Author:** ![Heidehaas](https://avatars.discourse-cdn.com/v4/letter/h/e99b99/32.png) [@Heidehaas](https://community.victronenergy.com/u/Heidehaas)\ **Post date:** [14 July 2025 12:11 UTC](https://community.victronenergy.com/t/connection-evcs-to-cerbo/39368/3 "2025-07-14T12:11:07Z")
Hi Nicolas, thanks for the quick reply. In remote console the modbus TCP server is activated. ![image](https://europe1.discourse-cdn.com/victron/original/3X/6/1/61e8f8d4cf1a3021cd8108359221e6702ea8b42c.jpeg) ---
**Author:** ![Nicolas](https://avatars.discourse-cdn.com/v4/letter/n/67e7ee/32.png) [@Nicolas](https://community.victronenergy.com/u/Nicolas)\ **Post date:** [14 July 2025 12:26 UTC](https://community.victronenergy.com/t/connection-evcs-to-cerbo/39368/4 "2025-07-14T12:26:01Z")
Could you please do the following: 1. Provide a screenshot of **EVCS General → GX device settings**. 2. Share the **GX Wi-Fi or Ethernet settings** , so we can compare IP addresses. 3. Try using the **“Check”** button in **EVCS General → GX device settings** and let us know the result. Thanks in advance! ---
**Author:** ![Heidehaas](https://avatars.discourse-cdn.com/v4/letter/h/e99b99/32.png) [@Heidehaas](https://community.victronenergy.com/u/Heidehaas)\ **Post date:** [14 July 2025 13:59 UTC](https://community.victronenergy.com/t/connection-evcs-to-cerbo/39368/5 "2025-07-14T13:59:23Z")
EVCS: GX device settings ![image](https://europe1.discourse-cdn.com/victron/original/3X/c/9/c9d2aa65f1cf6652778f29f6007427cc45afe485.png) Cerbo settings ![image](https://europe1.discourse-cdn.com/victron/original/3X/d/b/dba871486a071416a8a59dca77c2b7320207c67e.png) ![image](https://europe1.discourse-cdn.com/victron/original/3X/b/3/b3f38fdd1caece84eeb3b789a1d94b9a3d4cd0db.png) ---
**Author:** ![Heidehaas](https://avatars.discourse-cdn.com/v4/letter/h/e99b99/32.png) [@Heidehaas](https://community.victronenergy.com/u/Heidehaas)\ **Post date:** [15 July 2025 13:46 UTC](https://community.victronenergy.com/t/connection-evcs-to-cerbo/39368/6 "2025-07-15T13:46:26Z")
Do you need further information? ---
**Author:** ![Nicolas](https://avatars.discourse-cdn.com/v4/letter/n/67e7ee/32.png) [@Nicolas](https://community.victronenergy.com/u/Nicolas)\ **Post date:** [16 July 2025 10:25 UTC](https://community.victronenergy.com/t/connection-evcs-to-cerbo/39368/7 "2025-07-16T10:25:10Z")
Thanks for the screenshots. It looks like the GX device IP address is 192.168.2.31, but in the EVCS settings, you’re trying to connect to 192.168.2.5. Could you try setting the GX IP address in the EVCS settings to 192.168.2.31? ![b3f38fdd1caece84eeb3b789a1d94b9a3d4cd0db_2_229x500](https://europe1.discourse-cdn.com/victron/original/3X/6/f/6f9d63ed1b5889aa48a6798f1ae1d4906abf3915.png) ---
**Author:** ![Heidehaas](https://avatars.discourse-cdn.com/v4/letter/h/e99b99/32.png) [@Heidehaas](https://community.victronenergy.com/u/Heidehaas)\ **Post date:** [16 July 2025 10:48 UTC](https://community.victronenergy.com/t/connection-evcs-to-cerbo/39368/8 "2025-07-16T10:48:27Z")
Hi Nicolas, Thanks for the reply. It has found 2 IPs. 2.5 and 2.31. I changed to 2.31now. ![image](https://europe1.discourse-cdn.com/victron/original/3X/1/e/1ef85980596563fe5842724d31539b9fe9384096.png) I still don’t see it in VRM though. May be off-topic, but I do see the Energy meter twice… ![image](https://europe1.discourse-cdn.com/victron/original/3X/d/d/dd0f94cdc9f6aedc66136e5d135e52b6552e4c23.jpeg) ---
**Author:** ![M\_Lange](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/m_lange/32/16_2.png) [@M\_Lange](https://community.victronenergy.com/u/M_Lange)\ **Post date:** [16 July 2025 17:33 UTC](https://community.victronenergy.com/t/connection-evcs-to-cerbo/39368/9 "2025-07-16T17:33:53Z")
I think now you need to activate it in the settings of the GX device Settings → Modbus TCP devices → discovered devices > **[5. Setup, configuration & operation](https://www.victronenergy.com/media/pg/EV_Charging_Station_NS/en/setup,-configuration---operation.html#UUID-a5b3df40-5a60-184f-b5b4-a3465a6ad69b)** ---
**Author:** ![Heidehaas](https://avatars.discourse-cdn.com/v4/letter/h/e99b99/32.png) [@Heidehaas](https://community.victronenergy.com/u/Heidehaas)\ **Post date:** [17 July 2025 14:33 UTC](https://community.victronenergy.com/t/connection-evcs-to-cerbo/39368/10 "2025-07-17T14:33:16Z")
Yes it works, thanks so much Matthias. Only now, during charging, no Amps are shown.. Tomorrow I wil continue the quest. Now Tour de France Sander