User`s guide

52 DC 900-1317J
ADCCP NRM Programmer’s Guide
3.4 Client/ICP Control Packet Formats
The ADCCP NRM protocol software running on an ICP is controlled by a set of control
packets sent by the DLI or by the client application using Raw
dlWrite and dlRead
requests. This section describes all control packets in detail and lists the optional argu-
ments fields required by each packet.
Note
The use of Normal dlRead requests (that is, without the optional
arguments parameter) is not recommended for ADCCP NRM
since error reports would be indistinguishable from data received
from the remote application.
Ta ble 3 –5 shows the dlWrite usProtCommand and iProtModifier fields for packets sent to
the ICP. Tab le 3 –6 shows the same information for packets received from the ICP using
dlRead.
The dlWrite usProtLinkID field is optional in most control packets; however, under some
conditions, the client must specify this field. This occurs when the client:
• sets a multipoint list
• enables a physical link
• disables a physical link
• reconfigures a link or configures a station on a link
• requests link statistics
• signals an idle link
• sends data via selective or global broadcast