10/3/2006 9:13 AM | |
Joined: 4/6/2006 Last visit: 2/5/2024 Posts: 604 Rating: (56) |
Dear Gromit, For more information about WDS you can have a look at the following FAQ: How do you set up a WDS connection between SCALANCE W modules? |
Best regards, |
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1/30/2008 11:31 PM | |
Posts: 9 Rating: (0) |
If you use 2.4GHz WLAN 802.11 a,b,g in ranges above 100m outdoor you have to think about the availibility of the radiolink. WLAN is very very sensitiv for interferences. If you use profinet IOwireless connection you will have a lot of buserrors. If you use TCP/IP may be you feel only some timedelays when TCP has to resend lost data. Profinet will cut the internal connection immediatly if you have smallest interferences of some100ms, which will be normal by this distances. Maybe 1km can work in some applications which are not time critical, line-of-sight, no other WLAN transmitters in the area. With my experiance of about 2000 wireless project this are about 1 per 100. We use wireless profibus also with 868/900MHz moduleswith more transmitting power up to 4 km, which runs on theprofibus cableside with 1.5Mbit and are really transparent. www.schildknecht.info AttachmentGB_DE_3x0x.pdf (521 Downloads) |
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