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PI Interface for Modbus Ethernet PLC

Example 1

  • Last UpdatedNov 17, 2022
  • 1 minute read

If the 100 tags have data offsets of 1 to 20, 101 to 120, 201 to 220, 301 to 320 and 401 to 420 respectively, the tags will be represented by four tag groups: tag groups 1, 2, 3 and 4. The following table represents how the tags will be located in the four groups:

Tag group

Tag offsets

1

1 to 20, 101 to 120

2

201 to 220

3

301 to 320

4

401 to 420

In this case four requests will have to be made to read the values for the 100 tags.

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