Schneider Electric Processor Adapter Modbus Plus Addresses, Will be passed from device to device

Using the Modbus Plus Ports

Modbus Plus Addresses

Introduction	Modbus Plus devices function as peers on a logical ring. Each device accesses the
	network by acquiring a token frame that is passed in a rotating address sequence.
	Each device on a Modbus Plus network needs a unique address in the range
	1...64. The device address determines the logical order in which the network token
	will be passed from device to device.

CAUTION

COMMUNICATION ERRORS MAY RESULT

Do not install a Modbus Plus Option Adapter before you have set its Modbus Plus address for your application. See your network administrator to get the Modbus Plus node address for this module.

Failure to observe this precaution can result in injury or equipment damage.

Address	The assignment of addresses does not have to map to the physical layout of the
Sequence	network–e.g., device 17 is placed physically before device 3. This is important to
	understand because the network's token rotation is defined by device addresses-
	e.g., device 2 will pass the token to device 3, device 3 to device 4, etc.

Illegal Addresses If you set the node address to 00 or to a value greater than 64:

λThe COM LED will go ON steadily to indicate an illegal address assignment.

λThe Run LED will flash 4 times.

λThe Processor Adapter will not run until you set a valid, unused address on the Option Adapter and cycle power.

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