Rockwell Automation 1336T ControlNet Frn1.02 Rev 1.5 - Manual (Page 98)

4–56 Using Unscheduled Messaging
Publication 1336 FORCE–5.18 ––March, 1999
The Reference Time Stamp Data Read message reads the reference
time stamp value from the drive.
PLC Block Transfer Instruction Data
PLC Message Write instruction length: 3 words
PLC Message Read instruction length: 7 words
Header
Word 1 Header
Word 1
Header
Word 2 Header
Word 2
Header
Word 3
0
Message Structure
Message Length
3
Header
Word 3
Reference Number
PLC Decimal Value
2816
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
You can define the reference time stamp to monitor the time of a
specific event. This function allows this time to be read from the
device. The time stamp is returned in the order shown in the header
message. This information should be viewed as ASCII text.
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
Read