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Industrial Ethernet Wireless LAN RLM Manager, CP 1515 Manager
C79000-G8976-C171-01 131
• If you suspect a “hidden” station, see RTS/CTS Medium
Reservation (page 131).
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You can also use the CP1515 Manager to analyze the link quality
between a remote station and the Access Point RLM. In that case,
you will need to have access to the “problem location” to do on-site
diagnostics.
If these options do not resolve your problem, consider one of the following
options:
• Protocol Filtering (page 118)
• Optimizing Wired Connections (page 121)
• Designing High Capacity Networks (page 146)
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It is normal behavior for SIMATIC NET IWL stations to defer transmissions
automatically when they sense that another wireless device is using the
wireless medium.
This behavior also referred to as the Carrier S ense Multiple Access/Collision
Avoidance protocol (CSMA/CA) will avoid that wireless messages would
collide in situations where two or more stations would start transmissions at
the same time.
The RTS/CTS medium reservation mechanism enables you to improve
wireless performance in network environments where the CSMA/CA