ProSoft Technology PTQ-101M - Manual (Page 137)

Reference PTQ-101M ♦ Quantum Platform
IEC 60870-5-101 Master Communication Module
ProSoft Technology, Inc. Page 137 of 181
May 14, 2008
Word Offset Definitions Description
2 COT This field contains the COT for the event message
received from the IED. If the size of the COT is a
single byte, the originator address will always be zero.
The COT is in the LSB and the originator address is in
the MSB.
3 Reserved This field is reserved for future use and is added here
to keep the structure double-word aligned for all
platforms.
4 to 5 Point Index This field contains the point index in the remote device
that generated the event.
6 ASDU Type This field contains the ASDU type code for the data
contained in the message.
7 Milliseconds
and Seconds This word contains the seconds and milliseconds
when the event occurred.
8 Minutes and
Hours This field contains the minutes and hours the event
occurred.
9 Month and Day This field contains the month and day of the month the
event occurred.
10 Year This field contains the year the event occurred.
11 Qualifier This field contains the point qualifier, quality or
sequence value as described in the protocol
specification.
12 to 13 Value This field contains the a double word value for the
point associated with the event message.
Command List Error Data Block (9950)
Block 9950 identification code is used to request the Command List Error Table
from the module. The format for the block is shown below:
Block Format from Processor (4x Register Data)
Word Offset in Block Data Field(s) Description
0 Sequence
Counter This field contains a new value each time the user
wishes to request a new command block.
1 Block ID This field contains the value of 9950 identifying the
block type to the module.
2 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.
3 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.
4 to 63 Spare Not Used
Response to a block 9950 request: The module will respond to a valid request
with a block containing the requested error information. The format for the block
is shown below: