23.03.2026, 07:08
Hi,
We are running LogicMachine (LM1 + LM2 redundant setup) with multiple (we have 5) CANx DALI gateways (CAN-DALI-M3) in a hotel automation project. Since our on-site configuration session on March 20th, we have been experiencing intermittent issues with the CANx DALI GWs (Experienced 2 issues).
Environment
Symptoms
Questions
Any advice would be greatly appreciated. Thank you!
We are running LogicMachine (LM1 + LM2 redundant setup) with multiple (we have 5) CANx DALI gateways (CAN-DALI-M3) in a hotel automation project. Since our on-site configuration session on March 20th, we have been experiencing intermittent issues with the CANx DALI GWs (Experienced 2 issues).
Environment
- LogicMachine ×2 (for redundant)
- CANx DALI Gateway (we believe ESP32-based)
- Multiple rooms assigned per CANx DALI Gateway
- Approximately 30 DALI drivers are assigned to a single DALI gateway
- Use WAGO 787-2857 for DALI external 18V supply
- Every 15 minutes, a querystatus command is sent as a batch via sendcmds to all DALI drivers assigned to each gateway
Code:
[KNX BUS]
KNX-red ------------------+---- LM1 KNX+
|
+---- LM2 KNX+
KNX-black ------------------+---- LM1 KNX-
|
+---- LM2 KNX-
[CANx BUS]
CAN-white / CAN L -------+---- LM1 CANL
+---- LM2 CANL
+---- DGW1 CANL
+---- DGW2 CANL
+---- DGW3 CANL
+---- DGW4 CANL
+---- DGW5 CANL
CAN-yellow / CAN H -------+---- LM1 CANN
+---- LM2 CANN
+---- DGW1 CANN
+---- DGW2 CANN
+---- DGW3 CANN
+---- DGW4 CANN
+---- DGW5 CANN
[DALI]
DGW1 DALI+ / DALI- ----------------> DA-01
DGW2 DALI+ / DALI- ----------------> DA-02
DGW3 DALI+ / DALI- ----------------> DA-03
DGW4 DALI+ / DALI- ----------------> DA-04
DGW5 DALI+ / DALI- ----------------> DA-05Symptoms
- The CANx DALI GW randomly enters a hung/frozen state. The green LED stays lit solid, but LogicMachine CANx's device scan cannot find the GW ("device not found").
- When the GW hangs, lighting scenes and dimming commands from LM scripts stop working entirely. The DALI lights remain on at their last state but cannot be controlled.
- Excessive signals on the DALI BUS causing the GW to hang
- The ESP32 hanging under load
- We have confirmed that event scripts on one of the two LMs that call arc or gotoscene are disabled, so duplicate commands from the dual-LM setup are not the cause.
Questions
- Is there a known issue with the CANx DALI GW freezing under heavy DALI BUS traffic?
- Is there a safe way to remotely reboot the GW without physically accessing the panel?
- Are there any watchdog or auto-recovery settings we can configure on the GW?
- Is there a recommended way to monitor the GW or CANx status (ping, heartbeat, etc.) so we can detect hangs automatically?
Any advice would be greatly appreciated. Thank you!
