IEEE 80005-2-2016 pdf free.Utility connections in port – Part 2: High and low voltage shore connection systems – Data communication for monitoring and control.
The connection of the communication control unit onshore to offshore is a point to point connection, see 7.3.4., A.2.7 of IEC/ISO/IEEE 80005-1:2012, except as noted in A.4.1 for cruise ships.
4.4 Protocol and lP-address
The ModbusTCP/lP protocol is specified for the communication between shore and ship.
The shore side polls the ship side with every cycle of the communication module (as fast as possible) with a single Modbus data packet request of 125 registers. The content of the data packet is specified in Clause 6.
The ship side also polls the shore side with every cycle of the communication module (as fast as possible) with a single Modbus data packet request of 125 registers. The content of the data packet is specified in Clause 5.
Both the shore side and the ship side will make the requests with a single Holding Register Block Read utilizing Modbus function code 0x03 with the Modbus Unit ID.
It is required that both shore side and ship side have a dedicated and reserved data block to make available information for the other side. This data block starts at the absolute register address 0 and is 125 registers long. Data blocks registers configuration shall be as described in Clauses 5 and 6 and Annex A and Annex B.
The alarms indicate a critical condition onshore, which trips the shore and ship system, see Table 7, The ship side identifies and displays the information to the operator. The alarm is set if a basic subsystem (transformer, protection relay or converter) gives an alarm signal. Alarms are deactivated as soon as the monitored system returns to normal operating conditions and, if required, additionally acknowledgement on the subsystem. Additional special alarms may be indicated in the Shore Summary Alarm (see 5.8.1). but these alarms are not specified in detail within this data block. The ship side will trip after receiving of an alarm (via pilot loop and this interface). If the fault or the alarm is active, the bit is set to 1.IEEE 80005-2 pdf free download.