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- The originator ASDU address is not present.
- ASDU address is 1 byte, it is defined as the station address. ASDU addresses of all stations on one line must be different.
- The cause of transmission is 1 byte (does not contain the Originator ASDU address).
- The information object address is 2 bytes, it is defined as an I/O tag address.
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- Communication protocol "IEC 870-5-101 balanced", "IEC 870-5-101 unbalanced primary (Master)" or "IEC 870-5-101 unbalanced secondary (Slave)".
- The station address is a decimal number in the range 0 - 255 and is used in the protocol as the ASDU address. It can be specified as a decimal number or as a hexadecimal number with a hash at the beginning (e.g. #0A).
- The synchronization of the station real-time may be enabled also for the protocols "master" and "balanced - station A (controlling)". Set the synchronization period to a nonzero value. The synchronization is executed by ASDU 103 "Clock synchronization command" in the local time according to settings of the D2000 System.
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I/O tag address is a numerical address of data object IOA (in range 0 - 65535).
The I/O tag with an address starting with %IGNORE will be ignored.
In the case of command direction in master or balanced mode is necessary to configure a proper ASDU type:
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