Westermo LD-63 HV - Manual (Page 10)

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