ProSoft Technology MVI69-103M - Manual (Page 85)

Reference MVI69-103M ♦ CompactLogix or MicroLogix Platform
IEC 60870-5-103 Master Communication Module
ProSoft Technology, Inc. Page 85 of 131
November 3, 2008
Word Offset Definitions Description
3 Fault Number This is the fault number for the event if applicable. Only
valid for ASDU types 2 and 4.
4 Sec/milliseconds This word contains the seconds and millisecond values
with a range of 0 to 59999 time at which the message
was generated by the slave device.
5 Hr/Min. This word contains the hour and minutes the message
was generated by the slave. The MSB contains the
hour and the LSB contains the minute value.
6 Invalid/DST This word contains two bits that relate to the time value
recorded in the slave device for the message. Bit 0
corresponds to the validity of the time (0=valid,
1=invalid) and Bit 1 defines if daylight savings time is
used in the time (0=no, 1=yes).
7 Relative Time This field contains the relative time value if applicable to
the object. Only valid for ASDU types 2 and 4.
8 to 9 Value This double-word value contains the value for the point
index/function code in the event message. For ASDU
types 1 and 2, this value is only 2 bits wide. For ASDU
type 4, this double-word value contains the floating-
point number (short circuit location).
In order for this feature to be activated, the event pass-through parameter must
be set. When a master driver receives an event message from a controlled
station, it will build an event message corresponding to the event in the event
buffer of the module. This buffer is then sent to the processor when any
messages are present. Therefore, these blocks are sent to the processor on a
high priority. After the block is sent, the event message is removed from the
module's event buffer.
If too many events are present in the buffer (>200), the module will set the event
message overflow flag in the error/status data area of the normal read data
block. There is no response block to be received by the module from the
processor.
Command List Error Data Block (9950)
Block 9950 identification code requests the Command List Error Table from the
module for the 1000 user configurable commands. The format for the block is
shown below:
Word Offset in
Block Data Field(s) Description
0 Block ID This field contains the value of 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 200.
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 n Spare Not Used
where
n = 60, 120, or 240 depending on the Block Transfer Size parameter (refer to the
configuration file).