This is the third episode of the Opto22 series. Last Time, we introduced how to access IO via Modbus TCP with the OPTO22 EPIC Controller, and next time, we will introduce how to use the OPTO22 with MQTT Protocol. Let’s get started! Reference Link MQTT? groov EPIC and groov RIO include MQTT communication can  improve communication efficiency and reduce dependency on IT. mqtt is a pub-sub (publish-subscribe) protocol suitable for … Continue reading Opto22#Let’s use MQTT function in your Groov EPIC Controller