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Comtrol Modbus TCP User Guide User Manual

Page 107

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DeviceMaster UP Modbus/TCP User Guide: 2000447 Rev. I

Appendix B. LPBKCNCP Example Program- 107

Note: There will be no valid data in this variable array until received data is requested from the DeviceMaster

UP.

Where:

The first word contains the sequence number starting at zero.

The second word contains the length that is set to the maximum number of bytes transmitted by the
Concept software package. (100 words = 200 bytes. 196 bytes maximum transmit data size.)

Words three to 100 contain transmit data.