SPP/IPC Packet Type

Packet type values used by SPP and "IPC Reliable Message" (set to zero by "IPC Unreliable Datagram").

01 = Data

02 = Error (IPC only)

03 = Disconnect

04 = Probe

05 = Acknowledgment

01 = Data

The current SPP/IPC packet contains process data.

02 = Error

Only IPC, not SPP: The current packet contains an error condition.

03 = Disconnect

The current SPP/IPC packet indicates a disconnection.

04 = Probe

The current SPP/IPC packet checks if the destination station is ready to communicate.

05 = Acknowledgment

The current SPP/IPC packet acknowledges the receipt of the previous packet.