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Switch settings ld-63 profibus, Description of y/v-mode, Selection of data rate number of units – Westermo LD-63 User Manual

Page 4: Selection of retiming, Selection y/v-mode

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Switch settings LD-63 Profibus

Selection of data rate

Number of units

ON

1 2 3 4 5 6 7 8 9

S1

Selection of retiming

ON

1 2 3 4 5 6 7 8 9

S1

Retiming
activated

ON

1 2 3 4 5 6 7 8 9

S1

Retiming
inactivated

Retiming implies that the incoming data on fibre side will be
retimed to an exact bitlength depending on configured
transmission speed. This gives the possibility to connect an
increased number of units in serie. Retiming is only possible
at adjustable speeds and not at ”auto detect mode”.

Selection Y/V-mode

ON

1 2 3 4 5 6 7 8 9

S1

Y-mode

ON

1 2 3 4 5 6 7 8 9

S1

V-mode

Number of units is depending on the data rate and the
total system. Retiming (see S1:2) increases the number of
possible units but also introduces a delay in the system.
”Number of units” means a typical value that can be
changed depending on the structure of the total system.

Number

of units

Data

rate

20

auto detect

ON

1 2 3 4 5 6 7 8 9

S1

20

9.6 kbit/s

ON

1 2 3 4 5 6 7 8 9

S1

20

19.2 kbit/s

ON

1 2 3 4 5 6 7 8 9

S1

20

93.75 kbit/s

ON

1 2 3 4 5 6 7 8 9

S1

20*)

187.5 kbit/s

ON

1 2 3 4 5 6 7 8 9

S1

20*)

500 kbit/s

ON

1 2 3 4 5 6 7 8 9

S1

20*)

1 500 kbit/s

S2:1-5

S1:1-9

*) With retiming

LA-01 Y

OR

OR

OR

LA-01 V

OR

F/O

V-function

channel 1

channel 2

channel 1

channel 2

Y-function

F/O

F/O

F/O

Profibus-DP/FMS

Profibus-DP/FMS

Description of Y/V-mode