Modbus TCP / SNMP / OPCUA

Modbus TCP server

The Ewon gateway can act as Modbus TCP server. This allows the Ewon gateway to expose tags to third party applications (like SCADA, IOservers, custom developments, etc). Inside the Ewon gateway, you can associate a Modbus register for each tag.

The third party application can then read/write the value of the tag using the Modbus TCP protocol.
This will, for example, allow a third party application to interact with the PLC, even if the application does not support the PLC protocol.

SNMP server

The Ewon gateway can act as an SNMP server. This allows the Ewon gateway to expose tags to third party applications using the SNMP protocol. Inside the Ewon gateway, you can associate a unique object identifier (OID) for each tag.

The third party application can then read/write the value of the tag using the OID. The Ewon gateway can also execute SNMP traps.
These traps can be executed as alarm notification or using Basic script command sendtrap.

OPCUA server

The Ewon gateway can act as an OPCUA server. This allows the Ewon gateway to expose tags to third party applications which feature an OPC UA client (lik SCADA, reporting software,etc). Inside the Ewon gateway, you can associate the group the OPCUA will be publishing to for each tag.

The OPCUA client can then browse the tags list and read/write the value of the tags in OPC UA.
This will, for example, allow a third party application to interact with the PLCs and meters, even if the application does not support the PLC protocol.

More info for Modbus, SNMP and OPCUA publishing can be found on our Support website.