User Manual

4–58 Using Unscheduled Messaging
Publication 1336 FORCE–5.18 ––March, 1999
The Reference Time Stamp message is provided to allow the drive to
write the specified real-time clock. This allows the drive to write a
new reference stamp.
PLC Block Transfer Instruction Data
PLC Message Write instruction length: 7 words
PLC Message Read instruction length: 3 words
Header
Word 1
Header
Word 1
Header
Word 2
Header
Word 2
Header
Word 3
0
Message Structure
Message Length
7
Header
Word 3
0
PLC Decimal Value
-29952
Clock Time
Seconds 10ths of MS
Clock Time
Hour Minute
PLC Decimal Value
2816 –– Message OK
-29952 –– Message Error
Clock Time
Date Day
Clock Time
Year Month
Data
Word 4
Data
Word 5
Data
Word 6
Data
Word 7
0
PLC Request –– PLC Message Write
Drive Response –– PLC Message Read
Message Operation
The Reference Time Stamp Data Write allows you to define a
specific time stamp to be used in the drive.
The Time is based on a 24-hour clock.
This field:
Indicates:
Seconds The seconds and tenths of milliseconds.
Date The date of the month in ASCII.
Day
The day of the week, where 1 is Sunday and 7 is
Saturday.
Year
The number of the year. 1990 is referenced as 0.
Therefore, the year 1995 would return a value of 5.
Month
The month of the year, where 1 is January and 12 is
December.
Time Stamp
Reference Time Stamp Data
Write