20.09.2020, 17:57
Two days ago my bus power supply decided to quit delivering power.
I restarted the power supply and it was fine again (probably some error mode). But I decided to swap out the powersupply altogether for a new one.
However, since the swap, the LogicMachines (I have two in this system) both function and can Tx (transmit) to the bus... but they both do not receive any KNX telegram anymore. I viewed the KNX bus status, and it only counts Tx, no Rx in days on both of them.
All other KNX devices in the system (there are 50) still work Tx and Rx. Only the LogicMachines stopped. It's a LM 5 Power, and some LM2 or 3 rebranded for HVAC control.
There are no errors in error log. Voltage log from all devices has been normal throughout. No spikes or anything.
What is going on? Can these be a polarity issue? I am pretty sure the polarity is correct.
Can it be the LM's are damaged? Then why did the LM's die and all other devices work?
I restarted the power supply and it was fine again (probably some error mode). But I decided to swap out the powersupply altogether for a new one.
However, since the swap, the LogicMachines (I have two in this system) both function and can Tx (transmit) to the bus... but they both do not receive any KNX telegram anymore. I viewed the KNX bus status, and it only counts Tx, no Rx in days on both of them.
All other KNX devices in the system (there are 50) still work Tx and Rx. Only the LogicMachines stopped. It's a LM 5 Power, and some LM2 or 3 rebranded for HVAC control.
There are no errors in error log. Voltage log from all devices has been normal throughout. No spikes or anything.
What is going on? Can these be a polarity issue? I am pretty sure the polarity is correct.
Can it be the LM's are damaged? Then why did the LM's die and all other devices work?