ProSoft Technology 5201-DFNT-104C - Manual (Page 81)

104C Version 3 ♦ ProLinx Gateway Mailbox Feature (x201-DFNT-104C)
IEC 60870-5-104 Client (Firmware v3.xx) Protocol Manual
ProSoft Technology, Inc. Page 81 of 139
August 4, 2011
4.6 Command List Error Data Mailbox (9950)
Mailbox ±9950 identification code is used to request the Command List Error
Table from the module. The format for the block is shown below:
Mailbox Request
Word
Offset in
Block Data Field(s) Description
0 Mailbox ID This field contains the value of -9950 or 9950
identifying the block type to the module.
1 Number of
Commands to
report This field contains the number of commands to
report in the response message. The value has
a range of 1 to 60.
2 Start Index of First
Command This parameter sets the index in the command
list where to start. The first command in the list
has a value of 0. The last index in the list has a
value of MaxCommands - 1.
3 to 62 Spare Not Used
63 Mailbox ID This field contains the value of -9950 or 9950
identifying the block type to the module.