8 Data Transmission by Accessing Layer 2 Services
8.1 Characteristic Features of Layer 2 Access Data Transmission . . . . 8 - 2
8.2 Types and Characteristic Features of the Layer 2 Services . . . . . . 8 - 5
8.3 Assigning the S5-95U Parameters for Data Communications . . . . . 8 - 9
8.4 FBs for Managing All Layer 2 Services . . . . . . . . . . . . . . . . . . . . 8 - 11
8.5 Sending Data to a Station (SDA Service) . . . . . . . . . . . . . . . . . . . 8 - 15
8.6 Sending Data to Several Stations (SDN) . . . . . . . . . . . . . . . . . . . 8 - 19
8.7 Holding Data for Fetching Once Only by a Station
(RUP_SINGLE Service) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 - 23
8.8 Holding Data Ready for Fetching Several Times Over by One
or More Stations (RUP_MULTIPLE) . . . . . . . . . . . . . . . . . . . . . . 8 - 26
8.9 Sending Data and Fetching Data from a Station (SRD Service) . . . 8 - 29
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EWA 4NEB 812 6112-02
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