Westermo LD-64 - Manual (Page 17)

17 6073-2002
Turning Time/Data rate/
Connected units
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
15
10
5
Selection of 2- or 4-wire
4-wire S1
ON
1 2 3 4 5 6 7 8 9
2-wire S1
ON
1 2 3 4 5 6 7 8 9
Selection of Master/Slave
Slave S1
ON
1 2 3 4 5 6 7 8 9
Master 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
Selection of 2-wire RS-485 or 4-wire RS-422.
For RS-232 S1:1 can be ignored.
Switch settings LD-64
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
50 µs 19 200 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
* Use this setting for synchronous or other
asynchronous protocols.
The transmitter will be active from the
startbit to 10 bit-times after the last high
databit (see example below). The speed
shall be set to
≅
10 times the required
communication speed.
Please note that only one master can be
used per system.
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 *) For other speeds please contact
Westermo
**) For additional units please contact
Westermo
S1:3 not used