ProSoft Technology MVI56-104S - Manual (Page 74)

MVI56-104S ♦ ControlLogix Platform Ladder Logic
IEC 60870-5-104 Server Communication Module User Manual
Page 74 of 188
ProSoft Technology, Inc.
November 18, 2009
3.3.3 Read Module’s Time to Processor (9970) Block
Block 9970 reads the module’s current time.
9970 Read Time Write Block Format
The following table shows the block format for write:
Word Offset in Block Data Field(s) Description
0 Write Block ID This field contains the value of 9970 identifying the
block type to the module.
9970 Read Time Read Block Format
The module responds to a valid 9970 request with a block containing the
requested date and time. The block format is shown in the following table.
Word Offset in Block Data Field(s) Description
0 Reserved Reserved
1 Write Block ID Block ID of next write block.
2 Year This field contains the four-digit year for the new time
value.
3 Month This field contains the month value for the new time.
Valid Values: 1 to 12.
4 Day This field contains the day value for the new time. Valid
Values: 1 to 31.
5 Hour This field contains the hour value for the new time.
Valid Values: 0 to 23
6 Minute This field contains the minute value for the new time.
Valid Values: 0 to 59.
7 Seconds This field contains the second value for the new time.
Valid Values: 0 to 59.
8 Milliseconds This field contains the millisecond value for the new
time. Valid Values: 0 to 999.
9 to 248 Reserved Reserved
249 Read Block ID This field contains a value of 9970