Ethernet Communication (ISO on TCP) between SIMATIC S5 and
SIMATIC S7-1500 Controllers
Entry-ID: 109482475, V1.2, 07/2019
Activate the corresponding enable bit in the SIMATIC S5-CPU via the "BB1” watch
table.
For scenario 3, the corresponding S7-1500 program can be activated via the
enable bit E 0.1.
Now, the connection will be established by the SIMATIC S7 station.
Test and diagnostics of communication in the SIMATIC S7-1500
The bidirectional data exchange (continuous count value) can be monitored via the
output byte (AB0) of the S7-1500.
To monitor the ongoing communication and the status of the send and receive
blocks in the SIMATIC S7-1500, call the watch table "BEO_Sz3_ID7” in TIA Portal.
There, you can monitor the last error status displays of the OUC blocks TSEND (1)
and TRCV_C (2).
If the TRCV_C instruction has been executed successfully or with errors, the status
of the TRCV_C instruction will be stored in the "DB_FC_RECV”.STATUS_SAVE
variable. The status provides information on the reason why the data have not
been received successfully.
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