Communications Capabilities
S5-115F Manual
Figure 7-10. Mailbox Structure in the Case of a Single-Channel SINEC L1 LAN
30 bytes
40 bytes
10 bytes
Send mailboxes
Receive mailboxes
30 bytes
20 bytes
Master
SINEC L1 LAN
1
1
2
3
4
A 0
B 0
A 2
B 2
A 3
B 3
30 bytes
A 4
B 4
10 bytes
A 0
B 0
50 bytes
A 1
B 1
10 bytes
A 0
B 0
50 bytes
A 1
B 1
A 0
B 0
50 bytes
A 1
B 1
2
A
2
B
3
A
3
B
4
A
4
B
1
A
1
B
1
A
1
B
1
A
1
B
Slave 1
Slave 2
Slave 3
Slave 4
User
program
0
A
0
B
Send
mailbox
Operating
system
User
program
Receive
mailbox
Operating
system
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EWA 4NEB 811 6148-02