Rockwell Automation 1336T PLC Comm. Adapter, Series B, FRN 2.xx-3.xx - Manual (Page 190)

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Publication 1336 FORCE–5.13 –– September, 1998
The Real Time Clock Data Read message is provided to allow the
drive to read the specified real–time clock. The slave device can
read the time in seconds, minutes, and hours as well as the day, date,
month, and year.
PLC Block Transfer Instruction Data
BTW instruction length: 3 words
BTR 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
0
PLC Decimal Value
2816
Clock Time
Seconds
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 –– Block Transfer Write
10ths of MS
Drive Response –– Block Transfer Read
Message Operation
The Real Time Clock Data Read function reads the real–time clock
data from the drive. The Clock Time is returned in the order shown
in the header message. You should view this information as ASCII
text.
The Time is based on a 24–hour clock.
Clock Data
Real Time Clock Data Read