level2:communication_between_2_webhmis_via_internet
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level2:communication_between_2_webhmis_via_internet [2022/02/08 13:59] – emozolyak | level2:communication_between_2_webhmis_via_internet [2022/02/09 15:16] (current) – [Option 2. VPN and Modbus TCP] emozolyak | ||
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With the WebHMI and Level2 connectivity options it is done with ease: | With the WebHMI and Level2 connectivity options it is done with ease: | ||
- | ==== Option 1. VPN and Modbus TCP ===== | + | ==== Option 1. Using MQTT protocol ==== |
+ | |||
+ | - Connect both WebHMIs to the Level2 IoT | ||
+ | - Subscribe the pump station WebHMI to the topic with level that far WebhMI publish onto the Level2 MQTT broker. | ||
+ | |||
+ | ==== Option 2. VPN and Modbus TCP ===== | ||
-[[level2: | -[[level2: | ||
Line 15: | Line 20: | ||
-Enable [[: | -Enable [[: | ||
-Create Modbus TCP connection on the pump side WebHMI using IP address from (1) | -Create Modbus TCP connection on the pump side WebHMI using IP address from (1) | ||
- | |||
- | ==== Option 2. Using MQTT protocol ==== | ||
+ | <WRAP center round tip 60%> | ||
+ | __Option 1__ Is preffered due to the nature of the MQTT protcol which saves traffice for communication while Modbus TCP will create constant polling process. | ||
+ | </ | ||
level2/communication_between_2_webhmis_via_internet.1644328762.txt.gz · Last modified: 2022/02/08 13:59 by emozolyak