ProSoft Technology 5201-DFNT-104C - Manual (Page 71)

104C Version 3 ♦ ProLinx Gateway Mailbox Feature (x201-DFNT-104C)
IEC 60870-5-104 Client (Firmware v3.xx) Protocol Manual
ProSoft Technology, Inc. Page 71 of 139
August 4, 2011
The following fields are used for each word record in the command list:
Word Offset Definitions Description
0 Database Index Address in module to associate with the
command
1 Session Index Session index defined in the module to
associate with the command (0 to 3).
2 Sector Index Sector index for session as defined in the
module (0 or 1).
3 Data Type ASDU data type associated with the
command.
4 Point Index Information object address for the point on
which command operates.
5 Qualifier Qualifier as defined for the command list.
This parameter is data type dependent.
Mailbox Response
Word Offset in
Block Data Field(s) Description
0 Mailbox ID This field contains the identification code of -9901 or
9901 for the block.
1 Command Count This field defines the number of user commands
added to the command queue
2 to 62 Spare Not Used
63 Mailbox ID This field contains the identification code of -9901 or
9901 for the block.