The Ewon Flexy can publish its tag values as Modbus TCP registers. These tags are published in the analog input register range, so a register of 500 in the tag settings will be polled as 30500 by the client. Additionally, the Flexy defaults to a unit address of 100.
APPLICABLE PRODUCTS
- Ewon Flexy line
PRE-REQUISITES
- Ewon Flexy with one or more tags set up to publish as Modbus TCP registers
IN THIS ARTICLE
Poll Modbus TCP Tag
- Use the Ewon's LAN IP address, Modbus TCP unit address/slave ID, and the tag's register
- Remember to add 30000 to offset the register since it's in the analog input register range
- The Ewon's unit address defaults to 100 and can be found in Tags -> IO Servers -> Modbus
Fig 3. Polling a tag value on the Ewon published in a Modbus TCP register using Simply Modbus TCP Client