Westermo DDW-100 - Manual (Page 15)

15 6621-2202
S2 DIP-switch
Annex B enabled, manual peed selected
Factory settings
S2
ON
1 2 3 4
Annex B Enabled
ON
1 2 3 4
Reserved for Annex A
ON
1 2 3 4
ON
1 2 3 4
Reliable Mode,
Noise Margin = 6 dB
ON
1 2 3 4
High-Speed Mode,
Noise Margin = 0 dB
ON
1 2 3 4
Normal Mode,
Noise Margin = 3 dB
ON
1 2 3 4
Manual Speed Selected
(Locked Speed) see S1:5-7
Description of normal, high-speed and reliable mode
With SW2:2, 3 the DDW-100 is set to reliable, high-speed or normal mode.
Choose mode depending on your application, if you wish to transmit large
amounts of non critical data, choose high-speed mode with a noise margin 0 dB.
If the data is critical, choose reliable mode.
When choosing one of reliable, high-speed or normal modes, the DDW-100 will
automatically set the highest possible speed according to the noise margin and
distance. The algorithm for sensing highest possible speed may result in a longer
connection time because several attempts have to be done to achieve a connec-
tion.
If the connection time is critical, it is possible to discover the connection speed
using the diagnostic port, then set the unit manually according to achieved
speed.