User`s guide

C: Packet Exchange Quick Reference

DC 900-1343D 69

C.3 attach-packet

Packet Description

This packet is used to attach an application to the protocol and retrieve the protocol’s

session ID.

Packet Header

Freeway (DLI only):

usFWPacketType = FW_DATA

usFWCommand = FW_ICP_WRITE

usFWStatus = 0

ICP:

usICPClientID = 0

usICPServerID = 0

[usLength = 16 (used for non-DLI only)]

usICPCommand = DLI_ICP_CMD_ATTACH

iICPStatus = 0

usICPParams[0] = 0

usICPParams[1] = 0

usICPParams[2] = 0

Protocol:

usProtCommand = DLI_ICP_CMD_ATTACH

iProtModifier = 0

usProtLinkID = port number

usProtCircuitID = 0

usProtSessionID = 0 - returned with protocol session number

usProtSequence = 0

usProtXParms[0] = 0

usProtXParms[1] = 0

Note

The Freeway header is used only with DLI (it is not applicable for

DLITE), and the

usLength ﬁeld of the ICP header is used only

without DLI.

Data

None

Packet Exchanges

usProtCommand sent usProtCommand received

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