Switch settings ld-63, Selection of v or y function, Selection of retiming function – Westermo LD-63 AD User Manual
Page 10: Selection of bits
10
6072-2004
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.
Start bit
1 bit = 52µs
1 bit: 1/19 200 = 52µs
Data rate 19 200
Transmitter active
Set the speed to 187.5 kbit/s
10x52µs = 520µs
↵
Example 19 200 bit/s
Retiming
possible
Turning/Transmission/
Number of units connected in serie
S1
ON
1 2 3 4 5 6 7 8 9
S1
ON
1 2 3 4 5 6 7 8 9
S1
ON
1 2 3 4 5 6 7 8 9
S1
ON
1 2 3 4 5 6 7 8 9
S1
ON
1 2 3 4 5 6 7 8 9
S1
ON
1 2 3 4 5 6 7 8 9
S1
ON
1 2 3 4 5 6 7 8 9
S1
ON
1 2 3 4 5 6 7 8 9
S1
ON
1 2 3 4 5 6 7 8 9
S1
ON
1 2 3 4 5 6 7 8 9
S1
ON
1 2 3 4 5 6 7 8 9
S1
ON
1 2 3 4 5 6 7 8 9
S1
ON
1 2 3 4 5 6 7 8 9
S1
ON
1 2 3 4 5 6 7 8 9
20
Number*
of units
20
20
20
20
20
20
20
20
15
10
5
20
10
4
S1
ON
1 2 3 4 5 6 7 8 9
Switch settings LD-63
0.4 ms
2 400 bit/s
Turning-
time
Transmission
rate
0.2 ms
4 800 bit/s
0.1 ms
9 600 bit/s
75 µs
14 400 bit/s
50 µs
19 200 bit/s
37 µs
28 800 bit/s
25 µs
38 400 bit/s
16 µs
62 500 bit/s
11 µs
93 750 bit/s
9 µs
115.2 kbit/s
6 µs
187.5 kbit/s
3 µs
375 kbit/s
2 µs
500 kbit/s
1 µs
1.0 Mbit/s
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
interface can handle transmission rates from 0 up to
115.2 kbit/s.
*) For additional units
please contact
Westermo