Technical data

Parameter Explanation
The address area between the local station
address of an active station and the address
of the next active station is known as the GAP.
The GAP addresses are checked cyclically
to obtain the status of stations in the GAP
address area ("not ready", "ready" or "passive").
If the status is "ready", the station is a new
active station and the token is passed to it.
The GAP update factor "G" is a factor for
calculating the time = (G*TTR) after which the
You must select this factor to match the
requirements of your bus system.
GAP Update
Factor
HSA
(highest L2 station
address)
Range: 2....126.
Default SAP
Bus characteristics
If an L2 frame is received without a destination
SAP number, the layer 2 firmware automatically
selects the default SAP.
If you want to use FDL services, you must
select the number of the default SAP in the
range 2 to 54, since the FDL service only
only accesses these DAPs.
RS 485
station with the lower address checks whether
a further station is requesting to enter the
ring.
Range 1 to 100
* Times are entered as bit times. This is the time required
to send one bit (reciprocal of the data rate in bps)
Table 17.13 Overview: INIT Parameters (continued)
B8976060/02 Appendix
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