![ICP DAS USA ET-2217CI User Manual Download Page 90](http://html1.mh-extra.com/html/icp-das-usa/et-2217ci/et-2217ci_user-manual_3586407090.webp)
ET-2200 Series Ethernet I/O Modules
Copyright © 2020 ICP DAS CO., Ltd. All Rights Reserved.
-90 -
Step 3
Try to subscribe a topic and publish a message. If the connection is operating normally,
you will receive a message related to the defined topic, as follows.
Enter a Subscribe-Topic: Test/MQTT
Enter a Publish-Topic: Test/MQTT
Enter a Publish-Message: Any text
Click to Subscribe
Click to Publish
Receive messages on the
subscribed topic