Rockwell Automation GV3000/SE AC Drive ControlNet Network Communication Board, M/N 2CN3000 - Manual (Page 70)

4-8 GV3000/SE AC Drive ControlNet Network Communication Option Board
To configure the MSG instruction, you must enter information about the data’s
location, size etc. Use table 4.6 to help you.
4.3.2 About MSG Instruction Timing
When a Typed Read message is sent to the drive, the response is sent to the PLC-5
programmable controller in under 20 msec. When a Typed Write message is sent to
the drive, the message is first processed by the drive. Therefore, 100-200 msec may
elapse before the response is returned to the PLC-5 programmable controller. These
times are applicable only when the network update time and unscheduled traffic
bandwidth are not limiting factors.
4.3.3 About the Files You Can Access
When you send an unscheduled message to the drive, the data table address you
specify for the target device determines what drive information you want to access.
The data table address is in the form of:
Nff:eee
where: N specifies the file type as integer, ff is the file number, and eee is the
element number (word).
The GV3000/SE ControlNet Option Board supports these file numbers:
• N10 – Drive parameters (read and write)
• N11 – Drive display data (read only)
• N12 – Drive reference and feedback data (read and write)
• N20 – Status of the most recent write parameter command (read only)
Table 4.6 – MSG Configuration Information
In this field: Do this:
PLC-5 Configuration
Communication Command To read information from the drive, enter PLC5
Typed Read.
To write data to the drive, enter PLC5 Typed Write.
Data Table Address When reading information from the drive, enter the
file in which you want to store the data received
from the drive.
When writing information to the drive, enter the file
that will contain the data you want to send to the
drive.
Size in Elements Enter the number of words to read or write. The
largest size you can use depends upon which file is
being accessed.
Port Number Enter 2 to select ControlNet communication.
Target Device Configuration
Data Table Address Enter the file in the drive where you want to read
data from or write data to. See section 4.3.3
ControlNet Path Enter the node number of the drive.