Rockwell Automation DeviceNet Communications Module - Manual (Page 96)

8-22 DeviceNet Communications Module
The Class Code is “ f ” for the Parameter Object and the Instance
Attribute is “1” to select retrieving the parameter value. See
Appendix C for more information. The Instance value is “17447” to
access parameter 39 (Accel Time 1).
The Explicit messages for Drive 1 to Drive 4 are identical except for
the Instance values:
• Drive 1 Instance = 18471 (18432 + 39)
• Drive 2 Instance = 19495 (19456 + 39)
• Drive 3 Instance = 20519 (20480 + 39)
• Drive 4 Instance = 21543 (21504 + 39)
8.8 Additional Information
• When the MD65 drive with the MDCOMM-DNET (Drive 0) is
powered up, all configured daisy-chained drives must be present
before an I/O connection is allowed on DeviceNet (i.e., before the
drives can be controlled).
• If the MD65 drive with the MDCOMM-DNET module (Drive 0) is
powered down, communications with the four daisy-chained
drives (Drive 1 to Drive 4) are disrupted and the drives will fault.
• If any of the daisy-chained drives (Drive1 to Drive 4) are powered
down, the respective Input Image (Logic Status and Feedback)
sent to the scanner will be zeros, and the NET A and PORT LEDs
on the MDCOMM-DNET module will flash red. Status information
from the scanner will not indicate there is a fault at the node.