Hi all,
I recently had a project using Node-RED installed on the PLC Next AXCF2152, the Flow in Node-RED is used to communicate with a server to get data and then those data are analyzed and then make decision for writing tags on PLC.
The tags are HMI tags made available for writing from node-red.
I had the system running for a day or so and everything look good, system does what it is supposed to do with the interval of http checking server is 1 min.
I then increase the frequent of checking server (http request node from Node Red) from 1min to 20 seconds and after a few hours (4-5 hours) the system seem just locked up, I can’t access to the Node Red flow running on the PLC and also can’t even access to webpage management for the PLC while PLC still connected to network and I still can go online with PLC using PLC Next Engineer software.
I then had to cycle the power of the PLC then things come back normal.
May I ask if there’s anyone experienced something like that before or could give me a lead on what can cause the system being unreachable? During the unreachable time all LED lights on PLC seem fine but the logic of the Node_RED didn’t execute correctly.
Thanks in advance!