Output sample data

If a device receives an I/O sample whose address matches that set by IA (I/O Input Address), it triggers line passing. Line passing operates whether the receiving device is operating in API or Transparent mode.

By default, if the receiver is configured for API mode, it outputs the I/O sample frame in addition to affecting output pins. You can suppress the I/O sample frame output by setting IU (Send I/O Sample to Serial Port) to 0. This only suppresses I/O samples that trigger line passing, a sample generated from a device whose address does not match the IA address is sent regardless of IU.