ABB DAO01 Output expansion module

When the Exchange Type is Producer, the cast type field determines if the exchange is a unicast ("U" = point-to-point) exchange, multicast ("M"=multicast group) or a broadcast ("B" = all nodes) exchange.
Producer Unicast - produce message to another station
Producer Multicast - produce message to a group of stations. In order to use this option you need to configure the same Multicast IP address used in the exchange also at the EGD MULTICAST ADDRESS section. Important: For Multicast mode, use transmit rates of 1 or 2 for best results.
Producer Broadcast - produce message to all stations (set exchange IP address to 255.255.255.255) When the Exchange Type is Consumer, the cast type field determines how the local database area associated to this exchange will be updated in case an COMS Error (timeout) occurs.
Consumer No DB Change on COMS Error
Consumer Set DB to -1 On COMS Error

DB Reg 

The DB Reg field determines the starting register address of the module database area from which data will be produced (sent) or area into which data will be consumed (received). The validity of the entry depends on the number of registers (Reg Count) to be produced or consumed. To be valid, the sum of the DB Reg and Reg Count values cannot exceed the range of the module’s database. 2.4.4 Reg Count Number of database registers to send or receive in the exchange. 2.4.5 Swap Code 0, 1, 2 or 3 The Swap Code field sets byte and word swapping of data produced or consumed. Swapping of words and/or bytes in the message may be required for different protocol and operating systems as their representation of multi-byte values may not be the same as that of the module.

P/C Time 

For a producer exchange, P/C Time sets the number of milliseconds between consecutive produced data exchanges (produced data update interval).
For a consumer exchange, P/C Time sets the number of milliseconds to wait for a new produced message before a timeout error will occur. For produced exchanges, if this parameter is set to zero, the message will not be produced. For consumed exchanges, setting this value to approximately 4 times the produced time set on the producer device will prevent the exchange from experiencing excessive timeout errors on a busy network. Setting this value to zero will turn off timeout error checking. A zero value can also be used for exchanges that will interface with the command service port (7937) to handle data read and write requests from another device.

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