ProSoft Technology 5201-DFNT-104C User Manual
Page 82
Mailbox Feature (x201-DFNT-104C)
104C Version 3 ♦ ProLinx Gateway
Protocol Manual
IEC 60870-5-104 Client (Firmware v3.xx)
Page 82 of 139
ProSoft Technology, Inc.
August 4, 2011
Mailbox Response
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
reported
This field contains the number of commands
contained in the block that need to be
processed by the PLC. This field will have a
value of 1 to 60.
2
Start Index of First
Command
This field contains the index in the command list
for the first value in the file. This field will have a
value of 0 to MaxCommands-1.
3 to 62
Command List
Errors
Each word of this area contains the last error
value recorded for the command. The
command index of the first value (offset 4) is
specified in word 3 of the block. The number of
valid command errors in the block is set in word
2 of the block. Refer to the command error list
to interpret the error codes reported.
63
Mailbox ID
This field contains the value of -9950 or 9950
identifying the block type to the module.