Rockwell-automation 22-COMM-C ControlNet Adapter User Manual Page 104

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7-36 Using Multi-Drive Mode
When the adapter — mounted in a PowerFlex 40/400 drive (Drive 0)
or a DSI External Comms Kit — is powered up, all configured
daisy-chained drives must be present before an I/O connection is
allowed on the network (i.e., before the drives can be controlled).
When the PowerFlex 40/400 drive with the internal-mounted adapter
(Drive 0) is powered down, communications with the daisy-chained
drives is disrupted and the drives will take their respective Comm
Loss Actions. When the adapter is used in a DSI External Comms Kit
(22-XCOMM-DC-BASE), communications will not be disrupted
when a daisy-chained drive is powered down.
When any of the daisy-chained drives are powered down, the
respective Input Image (Logic Status and Feedback) sent to the
scanner will be zeros, and the PORT and MOD LEDs on the adapter
will alternately flash red. The I/O connection will not be dropped until
the last drive is disconnected or powered down.
Important: Status information from the scanner will not indicate
there is a fault at the node, and the I/O connection will
not be dropped. If your application requires an action to
be taken when DSI communication is lost with one or
more drives, monitor adapter Parameter 13 - [DSI I/O
Act] to verify that the adapter is communicating with all
connected drives.
Additional Information
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