Rockwell Automation 1395 ControlNet Communication Board - Manual (Page 44)

3–30 Configuration & PLC Interfacing
Publication 1395–5.37– March, 1999
Autotune Update Motor Inertia This function updates the Drives internal database with the motor
inertia (parameter 613) calculated by the autotune firmware and
provides the data to the PLC Controller.
PLC Block Transfer Instruction Data –
Write Read
Size In Elements: 4 6
Processor Type: PLC-5 PLC-5
Destination Address: N40:0-3 N40:0-5
Message Structure –
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
525
Message Length
8 bytes
Header
Word 2
Header
Word 3
Header
Word 4
0
Header
Word 1
0
Function Code
525
See Note
Header
Word 2
Header
Word 3
Header
Word 4
Data
Word 5
Data
Word 6
Parameter
613
Parameter
Data
Message Operation – The AUTOTUNE UPDATE MOTOR
VELOCITY function updates the Drives internal database with the
motor inertia (parameter 613) calculated by the autotune firmware and
provides the data to the PLC Controller.