Communication
11.2 PROFINET
S7-1200 Programmable controller
866 System Manual, V4.2, 09/2016, A5E02486680-AK
1 80A1 Communications error:
• The specified connection has not yet established (TSEND and TRCV).
• The specified connection is currently being terminated. Transmission or a receive
job over this connection is not possible (TSEND and TRCV).
• The interface is being reinitialized (TSEND).
• The interface is receiving new parameters (TRCV).
1 80C3 Internal lack of connection (Page 828) resources: A block with this ID is already being
processed in a different priority class.
1 80C4 Temporary communications error:
• The connection to the communications partner cannot be established at this time.
• The interface is receiving new parameter settings, or the connection is currently
being established.
Connection Ethernet protocols
Every CPU has an integrated PROFINET port, which supports standard PROFINET
communications. The TSEND_C, TRCV_C, TSEND and TRCV instructions all support the
TCP and ISO on TCP Ethernet protocols.
Refer to "Device Configuration: Configuring the Local/Partner connection path (Page 807)"
for more information.
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