User`s guide

3: ADCCP NRM DLI Functions
DC 900-1317J 75
the final address octet must be set to one. This requirement ensures that the basic and
extended address field formats are compatible.
3.4.20.3 Third Variant
The client must configure basic link and station parameters prior to enabling the link or
station. However, the third variant of the
DLI_PROT_CFG_LINK packet allows the client to
adjust station timer and retry limit parameters whether or not a configured station is
active. The client must specify
DLI_PROT_CFG_LINK, iProtModifier field (–1), the
usProtXParms[0] field (station ID), the usProtXParms[1] field (data size=10), and the data
area (see Ta bl e 3 – 8 ).
Word 0 in the data area contains the retry limit parameter value. This parameter speci-
fies the number of retransmissions (not counting the initial transmission) that the ICP
may attempt while in the information transfer state without sending an ICP Station
Exception packet to the client to report the retry limit exceeded. If any retransmission
attempt succeeds, the ICP resets the retry count to zero.
Word 1 in the data area contains the retry timer parameter value. For NRM primary
stations, this parameter specifies the number of seconds within which a polled NRM
secondary station must respond; for NRM secondary stations, this parameter is
ignored. The value chosen for retry timer length should be long enough to allow the
remote station an opportunity to acknowledge I-frame receipt before the timer expires.
Table 3–8: DLI_PROT_CFG_LINK Packet Data Area (Third Variant)
Third Variant:
Argument < 0
and
Station > 0
(Size = 10)
(Adjusts station timers)
Word 0: Ret r y limit
Word 1: Retry timer (in seconds)
Word 2: Poll timer (in seconds)
Word 3: Flag timer (in seconds)
Word 4: Poll delay (in milliseconds)