Rockwell Automation 1395 ControlNet Communication Board - Manual (Page 40)

3–26 Configuration & PLC Interfacing
Publication 1395–5.37– March, 1999
Write System Clock This function writes the system time from the PLC Controller to the
Drive.
PLC Block Transfer Instruction Data –
Write Read
Size In Elements: 10 4
Processor Type: PLC PLC-5
Destination Address: N40:0-9 N40:0-9
Message Structure –
Message Header Information:
Word 1: 0
Word 2: 0
Function Code, Word 3: 1027
Write Message Length, Word 4: 20 bytes
0
PLC Message Write PLC Message Read
NOTE: Word 4 of the PLC Message Read instruction is broken down
into two bytes. The High byte contains the status bits.
The Low byte contains the Drive message length in bytes.
Header
Word 1
0
Function Code
1027
See Note
Header
Word 2
Header
Word 3
Header
Word 4
0
Header
Word 1
0
Function Code
1027
See Note
Header
Word 2
Header
Word 3
Header
Word 4
Month
(1–12)
Data
Word 5
Year
Data
Word 6
Day
(1–31) Data
Word 7
Data
Word 8
Data
Word 10
Hour
(0–24
Second
(0–59)
Data
Word 9 Minute
(0–59
Message Operation – The WRITE SYSTEM CLOCK function sets
the time in the Drive from the PLC Controller. The Drive stores time
in the 24 hour format. The values are integer type and may need to be
scaled by the PLC Controller prior to being sent to the Drive.