Switch settings ld-63, Selection of v or y function, Selection of retiming function – Westermo LD-63 HV User Manual
Page 10: Selection of bits
10
6072-2005
Selection of V or Y function
Y
S1
ON
1 2 3 4 5 6 7 8 9
V
S1
ON
1 2 3 4 5 6 7 8 9
Selection of retiming function
Retiming
S1
ON
1 2 3 4 5 6 7 8 9
Retiming of
S1
ON
1 2 3 4 5 6 7 8 9
Selection of bits
9
S1
ON
1 2 3 4 5 6 7 8 9
10
S1
ON
1 2 3 4 5 6 7 8 9
11
S1
ON
1 2 3 4 5 6 7 8 9
*
S1
ON
1 2 3 4 5 6 7 8 9
V-function and Y-function are described
on page 11.
*) Use this setting for synchronous
protocols.
The transmitter will be active from the
start bit to 10 bit-times after the last
high databit
(see example below).
The speed shall be set to
≅10 times
the required communication speed.
The retiming function calculates the exact bit-
length based on the speed set and recreates
the signal. This allows for more units in series.
The retiming works only for the indicated
speeds. For other speeds (e g 1.2 Mbit/s)
retiming can not be used.
Set the speed to 187.5 kbit/s
Start bit
1 bit = 52μs
1 bit: 1/19-200 = 52μs
Data rate 19-200
Transmitter active
10x52μs = 520μs
↵
Example 19-200 bit/s
Retiming
possible
Turning/Transmission/
Number of units connected in serie
Number*
of units
Switch settings LD-63
S1
ON
1 2 3 4 5 6 7 8 9
20
0.4 ms
2-400 bit/s
Turning-
time
Transmission
rate
S1
ON
1 2 3 4 5 6 7 8 9
20
0.2 ms
4-800 bit/s
S1
ON
1 2 3 4 5 6 7 8 9
20
0.1 ms
9-600 bit/s
S1
ON
1 2 3 4 5 6 7 8 9
20
75 μs
14-400 bit/s
S1
ON
1 2 3 4 5 6 7 8 9
20
50 μs
19-200 bit/s
S1
ON
1 2 3 4 5 6 7 8 9
20
37 μs
28-800 bit/s
S1
ON
1 2 3 4 5 6 7 8 9
20
25 μs
38-400 bit/s
S1
ON
1 2 3 4 5 6 7 8 9
20
16 μs
62-500 bit/s
S1
ON
1 2 3 4 5 6 7 8 9
20
11 μs
93-750 bit/s
S1
ON
1 2 3 4 5 6 7 8 9
15
9 μs
115.2 kbit/s
S1
ON
1 2 3 4 5 6 7 8 9
10
6 μs
187.5 kbit/s
S1
ON
1 2 3 4 5 6 7 8 9
5
3 μs
375 kbit/s
S1
ON
1 2 3 4 5 6 7 8 9
20
2 μs
500 kbit/s
S1
ON
1 2 3 4 5 6 7 8 9
10
1 μs
1.0 Mbit/s
4
S1
ON
1 2 3 4 5 6 7 8 9
0,7 μs
1.5 Mbit/s
When using RS-232 interface it is not necessary to
select number of bits and transmission rate. The RS-232
inter face can handle transmission rates from 0 up to
115.2 kbit/s.
*) For additional units
please contact
Westermo