FMI Message Summary

This section lists each of the messages used at the FMI and gives a reference to a topic in the section where each message is described. The formats of the messages are given in FMI Message Formats.

For each message the direction of flow is indicated; IN means from the application to the local node, and OUT means from the local node to the application. The connection on which the message flows is also given.

Message Direction Connection Reference
Open(SSCP) Request IN SSCP Opening the SSCP Connection
Open(SSCP) OK Response OUT SSCP Opening the SSCP Connection
Open(SSCP) Error Response OUT SSCP Opening the SSCP Connection
Open(PLU) Request OUT PLU Opening the PLU Connection
Open(PLU) OK Response IN PLU Opening the PLU Connection
Open(PLU) Error Response IN PLU Opening the PLU Connection
Open(PLU) OK Confirm OUT PLU Opening the PLU Connection
Open(PLU) Error Confirm OUT PLU Opening the PLU Connection
Close(SSCP) Request IN SSCP Closing the SSCP Connection
Close(SSCP) OK Response OUT SSCP Closing the SSCP Connection
Close(PLU) Request IN/OUT PLU Closing the PLU Connection
Close(PLU) OK Response IN/OUT PLU Closing the PLU Connection
Data-FMI IN/OUT SSCP/PLU Data Flow
Status-Acknowledge(Ack) IN/OUT SSCP/PLU Data Flow, Confirmation and Rejection of Data
Status-Acknowledge(Nack-1) IN/OUT SSCP/PLU Data Flow, Confirmation and Rejection of Data
Status-Acknowledge(Nack-2) OUT SSCP/PLU Inbound Data
Status-Control(CLEAR) Request OUT PLU Recovery
Status-Control(CLEAR) Ack IN PLU Recovery
Status-Control(CLEAR) Nack-1 IN PLU Recovery
Status-Control(SDT) Request OUT PLU Status-Control Message
Status-Control(RQR) Request IN PLU Recovery
Status-Control(RQR) Ack OUT PLU Recovery
Status-Control(RQR) Nack-1 OUT PLU Recovery
Status-Control(RQR) Nack-2 OUT PLU Recovery
Status-Control(STSN) Request OUT PLU Recovery
Status-Control(STSN) Ack IN PLU Recovery
Status-Control(STSN) Nack-1 IN PLU Recovery
Status-Control(CANCEL) Request IN/OUT PLU Outbound Chaining, Inbound Chaining
Status-Control(CANCEL) Ack IN/OUT PLU Outbound Chaining, Inbound Chaining
Status-Control(CANCEL) Nack-1 IN/OUT PLU Outbound Chaining, Inbound Chaining
Status-Control(CANCEL) Nack-2 OUT PLU Inbound Chaining
Status-Control(LUSTAT) Request IN/OUT PLU LUSTATs
Status-Control(LUSTAT) Ack IN/OUT PLU LUSTATs
Status-Control(LUSTAT) Nack-1 IN/OUT PLU LUSTATs
Status-Control(LUSTAT) Nack-2 OUT PLU LUSTATs
Status-Control(SIGNAL) Request IN/OUT PLU Direction
Status-Control(SIGNAL) Ack OUT PLU Direction
Status-Control(SIGNAL) Nack-1 OUT PLU Direction
Status-Control(SIGNAL) Nack-2 OUT PLU Direction
Status-Control(RSHUTD) Request IN PLU Application-Initiated Termination
Status-Control(RSHUTD) Ack OUT PLU Application-Initiated Termination
Status-Control(RSHUTD) Nack-1 OUT PLU Application-Initiated Termination
Status-Control(RSHUTD) Nack-2 OUT PLU Application-Initiated Termination
Status-Control(BID) Request OUT PLU Brackets
Status-Control(BID) Ack IN PLU Brackets
Status-Control(BID) Nack-1 IN PLU Brackets
Status-Control(CHASE) Request IN/OUT PLU Confirmation and Rejection of Data
Status-Control(CHASE) Ack IN/OUT PLU Confirmation and Rejection of Data
Status-Control(CHASE) Nack-1 IN/OUT PLU Confirmation and Rejection of Data
Status-Control(CHASE) Nack-2 OUT PLU Confirmation and Rejection of Data
Status-Control(SHUTC) Request IN PLU Shutdown and Quiesce
Status-Control(SHUTC) Ack OUT PLU Shutdown and Quiesce
Status-Control(SHUTC) Nack-1 OUT PLU Shutdown and Quiesce
Status-Control(SHUTC) Nack-2 OUT PLU Shutdown and Quiesce
Status-Control(SHUTD) Request OUT PLU Shutdown and Quiesce
Status-Control(RTR) Request IN PLU Brackets
Status-Control(RTR) Ack OUT PLU Brackets
Status-Control(RTR) Nack-1 OUT PLU Brackets
Status-Control(RTR) Nack-2 OUT PLU Brackets
Status-Control(QC) Request IN/OUT PLU Shutdown and Quiesce
Status-Control(QC) Ack IN/OUT PLU Shutdown and Quiesce
Status-Control(QC) Nack-1 IN/OUT PLU Shutdown and Quiesce
Status-Control(QC) Nack-2 OUT PLU Shutdown and Quiesce
Status-Control(QEC) Request IN/OUT PLU Shutdown and Quiesce
Status-Control(QEC) Ack OUT PLU Shutdown and Quiesce
Status-Control(QEC) Nack-1 OUT PLU Shutdown and Quiesce
Status-Control(QEC) Nack-2 OUT PLU Shutdown and Quiesce
Status-Control(RELQ) Request IN/OUT PLU Shutdown and Quiesce
Status-Control(RELQ) Ack OUT PLU Shutdown and Quiesce
Status-Control(RELQ) Nack-1 OUT PLU Shutdown and Quiesce
Status-Control(RELQ) Nack-2 OUT PLU Shutdown and Quiesce
Status-Error OUT SSCP/PLU Status-Error Message
Status-Resource IN PLU Pacing and Chunking
Status-Session OUT SSCP/PLU Status-Session Message, Status-Session Codes
Status-RTM OUT SSCP RTM Parameters

The following messages are used for LUA only:

Message Direction Connection Reference
Status-Acknowledge(ACKLUA) OUT SSCP/PLU Inbound Data from LUA Applications
Status-Control(...) ACKLUA OUT PLU Inbound Data from LUA Applications
Status-Control(CRV) Request OUT PLU Status-Control Message
Status-Control(CRV) Ack IN PLU Status-Control Message
Status-Control(CRV) Nack-1 IN PLU Status-Control Message
Status-Control(BIS) Request IN/OUT PLU Status-Control Message
Status-Control(BIS) Ack IN/OUT PLU Status-Control Message
Status-Control(BIS) Nack-1 IN/OUT PLU Status-Control Message
Status-Control(SBI) Request IN/OUT PLU Status-Control Message
Status-Control(SBI) Ack IN/OUT PLU Status-Control Message
Status-Control(SBI) Nack-1 IN/OUT PLU Status-Control Message