6 Configuration 6.1 Configuration of redundant optical rings
32
Version 2.4 04/07
The calculation of the slot time only takes into considera-
tion the optical network and the connection of bus sub-
scribers to the OZD Profi via an RS 485 bus segment
with a respctive length of max. 20 m. Longer RS 485 bus
segments must be allowed for by adding them to the
Length
OF
.
Note:
When the slot time is configured with a too small value
the OZD Profi 12M … will, through it’s fault function and
fault indications, indicate such. The System-LED will
blink red/green.
1)
Using the OZD Profi 12M G11-1300 (EEC) and … G12-
1300 (EEC) at data rates of 12 MBit/s, 6 MBit/s, 3 MBit/s
and 1.5 MBit/s the minimum slot times according to the
following table must be met.
Data rate Minimum slot time
12 MBit/s 3800 t
Bit
6 MBit/s 2000 t
Bit
3 MBit/s 1000 t
Bit
1.5 MBit/s 530 t
Bit
Table 4: Minimum slot time on OZD Profi 12M G11-1300
(EEC) and OZD Profi 12M G12-1300 (EEC)
Use the values from Table 4 if the calculated slot time
is smaller than the minimum slot time indicated in the
table.
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