- A - - B - Bus termination - C - Cabel tester - D - Data exchange DH (Function Code = Data High) DP-Master DP-V0 telegram DP-V1 telegram DSAP (Destination Service Access Point) - E - - F - CSRD (Clyclic Send and Request Data) MSRD (Send Request Data with Multicast Reply) SDA (Send Data with Acknowledge) SDN (Send Data with No acknowledge) - G - GSD file keyword - I - - L - - M - M12 connector Master MSRD (Send Request Data with Multicast Reply) - N - NR (Function Code = No Response) - P - - R - RS 485 transmission - S - SD4 (Startdelimiter 4 = Token) SDA (Send Data with Acknowledge) SDN (Send Data with No acknowledge) Simulator SSAP (Source Service Access Point) - T - TSDR (Station Delay of Responder) - U - UART (Universal Asynchronous Transmitter Receiver) UE (Function Code = User Error) - W - |