January-19th-2018, 02:19 PM
The current source code example implementation in Node-RED does not allow to look closer to the error that happened. It is of course possible to extened the source code.
But I know this error very well and know when it happens. You have to know that once started the netX51 network controller runs a watchdog to monitor its user application - in our case Node-RED - if it is still running. If now during normal operation Node-RED crashed by any reason, or you slowed down Node-RED too much, or you simply call a "kill $PID" with $PID as process ID of Node-RED then Node-RED and the fieldbus node does not have any chance to trigger the watchdog in time and netX51 automatically goes into this fail state. This is the only error that can happen.
Node-RED is an application that is running in a single thread. So once you program an infinite loop in javascript for example with no return, this will lead to such an error.
What else can you tell us when you see this error happened? Was it happening during experimentation phase, during complex data aggregations in Node-RED? When did it happen in your case?
But I know this error very well and know when it happens. You have to know that once started the netX51 network controller runs a watchdog to monitor its user application - in our case Node-RED - if it is still running. If now during normal operation Node-RED crashed by any reason, or you slowed down Node-RED too much, or you simply call a "kill $PID" with $PID as process ID of Node-RED then Node-RED and the fieldbus node does not have any chance to trigger the watchdog in time and netX51 automatically goes into this fail state. This is the only error that can happen.
Node-RED is an application that is running in a single thread. So once you program an infinite loop in javascript for example with no return, this will lead to such an error.
What else can you tell us when you see this error happened? Was it happening during experimentation phase, during complex data aggregations in Node-RED? When did it happen in your case?
„You never fail until you stop trying.“, Albert Einstein (1879 - 1955)
