ProSoft Technology 5201-DFNT-104C - Manual (Page 73)

104C Version 3 ♦ ProLinx Gateway Mailbox Feature (x201-DFNT-104C)
IEC 60870-5-104 Client (Firmware v3.xx) Protocol Manual
ProSoft Technology, Inc. Page 73 of 139
August 4, 2011
4.3 Event Messages from Outstations Mailbox (9903)
Mailbox ±9903 is used to request event messages received by the client driver
from outstations. In order to use this feature you must enable Pass-Through
Events parameter in the IEC-104 Client Gateway section.
Mailbox Request
Word Offset in
Block Data Field(s) Description
0 Mailbox ID This field contains the value of -9903 or
9903 identifying the block type to the
module.
1 to 62 Not Used Not Used
63 Mailbox ID This field contains the value of -9903 or
9903 identifying the block type to the
module.