User`s guide

114 DC 900-1317J
ADCCP NRM Programmer’s Guide
usFrameID: This field of the Frame Abstract contains a code for the frame ID in the
frame’s Control field. A code of 0 indicates that the Control field did not yield an recog-
nized frame type; in this case, the usILen, usNS, usNR, and usPF are set to 0. The rec-
ognized frame types are:
1: I 6: SNRM 11: SABME 16: RSET 21: FRMR
2: RR 7: SARM 12: SIM 17: XID 22: RD
3: RNR 8: SABM 13: DISC 18: UA
4: REJ 9: SNRME 14: UI 19: DM
5: SREJ 10: SARME 15: UP 20: RIM
usILen: This field of the Frame Abstract contains the length of the frame’s Information
field, if any; 0 is stored otherwise.
usNS: This field of the Frame Abstract contains the N(S) subfield of the frame’s Con-
trol field. This pertains only to Information Frames; 0 is stored otherwise.
usNR: This field of the Frame Abstract contains the N(R) subfield of the frame’s Con-
trol field. This pertains only to Information and Supervisory Frames; 0 is stored other-
wise.
cPF: This field of the Frame Abstract contains the Poll/Final subfield of the frame’s
Control field, as indicated by an ASCII ’P’, ’F’, or blank. This pertains to all frames.
usFCS[2]: This field of the Frame Abstract contains the frame’s FCS field, for all
received frames. 0 is stored for transmitted frames, since no FCS is available for those.
6.4 Detaching and Closing the Monitor Session
A standard Detach command detaches a Monitor Session. Any links that happen to still
be configured for monitoring at that time are automatically unconfigured, so that if the
Monitor Session is later reattached, that ICP’s links will be initially not configured for
monitoring. The
usProtLinkID field is not used. The rest of the Optional Arguments are
set per Figure 3–1 on page 51. A standard
dlClose call closes a Monitor Session.