Applies To:
  • CitectSCADA

How do I use the maximum block size for the S7NT driver?

There are four protocols that are available to choose from according to your device: S7NT, S7NT300 and S7NT400 from the S7NT driver version The maximum block size of the protocols are set to 512, 1776 and 1904 bits respectively to boost performance of the system.

S7NT is compatible with all devices, so the block size is set to the lowest.

The changes are at the IO device level, therefore, the different IO device can be used on the same IO port.