last will - PLC Programming & Automation

An MQTT Broker for Plant Data: Topics, QoS, Retained Messages and Last Will

The topic string plant2 slash pack slash carton1 slash tr14 slash belt1 slash amps drawn as six boxes labelled site, area, line, machine, device and signal, above a table of five subscriptions including the hash wildcard and the plus wildcard with what each one brings back and a warning on the bare hash

An MQTT Broker for Plant Data: Topics, QoS, Retained Messages and Last Will The topic string plant2/pack/carton1/tr14/belt1/amps is 42 bytes. The float it carries is four. Every publish of the motor current on one belt of the carton transfer therefore spends ten times as much on saying where the number came from as on the … Read more