Rockwell Automation 1395 Multi-Comm Hardware/Software - Manual (Page 67)

Chapter 3
Configuration & Interfacing
3–56
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 in the BTR message.
PLC Block Transfer Data –
BTW Instruction Length: 4
BTR Instruction Length: 6
PLC DH+ Data –
Write Read
Size In Elements: 4 6
Processor Type: PLC–5 PLC–5
Destination Address N15:0–3 N15:0–5
Message Structure –
Message Header Information:
Word 1: 0
Word 2: 0
Function Code, Word 3: 525
Write Message Length, Word 4: 8 bytes
WORD
0
0
525
8
BTW BTR
0
0
525
See Note
1
2
3
4
NOTE: Word 4 of the BTR instruction is broken down into
two bytes. The High byte contains the status bits
per table 3–H. The low byte contains the Drive
message length in bytes.
Parameter 613
Parameter Data
5
6
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 in the BTR message.