Schneider Optics Modicon Quantum Ethernet manual Write CTE Config Extension Table Mstr Operation

The MSTR Instruction

3.2.12Write CTE (Config Extension Table) MSTR Operation

The Write CTE operation (type 12 in the displayed register of the top node) reads an indicated number of bytes from PLC memory, starting at a specified byte address, to an indicated Ethernet configuration extension table at a specified offset. The content of the Ethernet CTE table is displayed in the middle node of the MSTR block.

Control Block	The registers in the MSTR control block (the top node) contain the Write CTE
Utilization	information as described in the following table:
	Register	Function		Content
	Displayed	Operation Type		12
	First implied	Error status		Displays a hex value indicating an MSTR error,
				when relevant.
	Second implied	Not applicable
	Third implied	Not applicable
	Fourth implied	Low byte		Quantum backplane slot address of the NOE
				module.
	Fifth ... Eight	Not applicable
	implied
CTE Display
	The values in the Ethernet configuration extension table (CTE) are displayed in a
Implementation	series of registers in the middle node of the MSTR instruction when a Write CTE
	operation is implemented. The middle node contains the first of 11 contiguous 4x
	registers. The registers display the following CTE data:
	Parameter		Register		Content
	Frame type		Displayed		1 = 802.3
					2 = Ethernet
	IP Address		First implied		First byte of the IP address
			Second implied		Second byte of the IP address
			Third implied		Third byte of the IP address
			Fourth implied		Fourth byte of the IP address
	Subnetwork mask		Fifth implied		Hi word
			Sixth implied		Low word
	Gateway		Seventh implied		First byte of the gateway
			Eighth implied		Second byte of the gateway
			Ninth implied		Third byte of the gateway
			Tenth implied		Fourth byte of the gateway

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