There is experience polling the siemens 1500 controller with the output of information on a dashboard. If anyone is interested in such an experience, ask questions, I will gladly share the experience.
In coal mining, I manage an automated process control system. Node Red gives very great opportunities in connecting different protocols such as SNMP, MODBUS and others. I ask the Siemens 1500 controller: the status of the units and the number of hours of operation of each device. I also poll some devices using SNMP in order to count the number of hours worked by the equipment. Also through node red I connect to the SQL database, read data from it, and also write to it after certain calculations performed inside Node red.
I hope there are people with whom we can exchange interesting experience in the field of automation of production, I wish everyone a good mood and before communication.