Siemens SIMATIC NET ET 200SP - Page 54

Configuration and operation
4.5 Telecontrol communication (CP 1542SP-1 IRC)
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
54 Operating Instructions, 01/2017, C79000-G8976-C426-03
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Connection establishment
Specifies the communications partner that establishes the connection (always the CP).
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Partner port
Port number of the communications partner
"Connection to redundant partner" (only with DNP3 / IEC)
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Redundancy mode
Enable the option if the communications partner is a redundant master.
For information on the other parameters see above.
"Advanced settings"
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Partner monitoring time (only with DNP3 / IEC)
If the CP does not receive a sign of life from the communications partner within the
configured time, the CP interprets this as a fault/error on the partner. If you enter 0, the
function is deactivated.
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Report partner status (connection to partner)
If the function is enabled, the CP signals the status of the connection to the
communications partner to the CPU.
– Bit 0 of "PLC tag for partner status" (data type WORD) is set to 1 if the partner can be
reached.
– Bit 1 is set to 1 if all the paths to the remote partner are OK (useful with redundant
paths).
– Bits 2-3 indicate the status of the send buffer (frame memory).
The following values are possible:
- 0: Send buffer OK
- 1: Send buffer threatening to overflow (more than 80 % full).
- 3: Send buffer has overflowed (fill level 100 % reached).
As soon as the fill level drops below 50%, bits 2 and 3 are reset to 0.
Bits 4 to 15 of the PLC tags are not used and do not need to be evaluated in the program.
DNP3-specific settings
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DNP3 level
DNP3 conformity level supported by the partner.
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Event transmission mode
Mode with which the frames in the send buffer of the CP (events) are transferred:
– Chronological transfer of individual frames
or
– Block-by-block transfer of the frames of a data point