Technical data

Fig. 8.13 illustrates how all the stations assigned a default SAP in the range
2..54 can receive a multicast frame.
☞
COM 5430 TF/COM 5431 FMS automatically assigns the same
default SAP number to all CP 5430 TF/CP 5431 FMS stations.
Station 2 Station 3 Station 4 Station 1
SAP SAP
SAP
Default Default
Default
SDN frame with DSAP/RSAP FF and address 7F
H
H
Fig. 8.13 Receiving Multicast Messages using the Default SAP
Free Layer 2 Communication B8976060/02
Volume 1 8 - 30