S5-115F Manual Communications Capabilities
Note the different contents of the master and slave mailboxes in the S5-115F.
The following four tables show the mailbox contents for master traffic.
• Master-PLC with CP 530 sends to slave S5-115F
• Master-PLC without CP 530 sends to slave S5-115F
• Slave S5-115F sends to master PC with CP 530
• Slave S5-115F sends to master PC without CP 530
Table 7-1. Mailbox Contents, Master PLC with CP 530 Sending to Slave S5-115F
Master PLC with CP 530 Sends to Slave S5-115F
Byte Contents of master PLC Send Byte Contents of slave PLC Receive
mailbox mailbox
(shared) (source-specific)
0 Status Byte Send
1 not used
2 Net data1 0 Net data 1
3 Net data 2 1 Net data 2
:: ::
:: ::
64 Net data 63 62 Net data 63
65 Net data 64 63 Net data 64
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Note
If you are using a master PLC with CP 530, you must allow for the entire contents of the
mailbox (net data plus 2 bytes) when assigning parameters to "FB SEND".
Table 7-2. Mailbox Contents, Master PLC without CP 530 Sending to Slave S5-115F
Master PLC without CP 530 Sends to Slave S5-115F
Byte Contents of master PLC Send Byte Contents of master PLC Receive
mailbox mailbox
(shared) (source-specific)
0 Length
1 Destination
2 Net data 1 0 Net data 1
3 Net data 2 1 Net data 2
:: ::
:: ::
64 Net data 63 62 Net data 63
65 Net data 64 63 Net data 64
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EWA 4NEB 811 6148-02
7-7
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