Schneider Electric Processor Adapter MB+ ACT Flash, Patterns, Status of the Modbus Plus node

Option Adapters

Front Panel Components, Continued

MB+ ACT Flash	This table provides the patterns that the MB+ ACT indicator will flash to indicate the
Patterns	status of the Modbus Plus node.
	Pattern	Meaning
	6 flashes/s	This is the normal operating state for the node. It is
		receiving and passing the network token. All nodes on a
		healthy network flash this pattern.
	1 flash/s	The node is offline just after power-up or after exiting the
		6 flashes/s mode. In this state, the node monitors the
		network and builds a table of active nodes. After being in
		this state for 5s, the node attempts to go to its normal
		operating state, indicated by 6 flashes/s.
	2 flashes, then OFF for 2s	The node detects the token being passed among the other
		nodes, but never receives the token. Check the network for
		an open circuit or defective termination.
	3 flashes, then OFF for 1.7s	The node is not detecting any tokens being passed among
		the other nodes. It periodically claims the token but cannot
		find another node to which to pass it. Check the network for
		an open circuit or defective termination.
	4 flashes, then OFF for 1.4s	The node has detected a valid message from a node using
		a network address identical to its own address. The node
		remains in this state for as long as it continues to detect the
		duplicate address. If the duplicate address is not detected
		for 5s, the node changes to its 1flash/s mode.
	ON	Indicates an invalid node address.
	OFF	Possible fault with Modbus Plus Option Adapter.

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