Schneider Electric LUFP9 user manual Outputs, Output data area, General data area

7. Appendix A: Technical Characteristics

Structure of the	• 2 bytes for the activation or inhibition of the downstream network by the gateway
LUFP9 gateway’s memory:	(see chapter 5 Gateway Initialization and Diagnostics, page 33).
	• 510 bytes accessible by the DeviceNet master in the form of output data (see
Outputs	chapter 8.2.2 Output Data Memory Area, page 85, for the default use of this
	output data).
	Addresses	Output data area
	16#0200	DeviceNet master command word
	16#0201	(unless “Control/Status Byte” = “Disabled”)
	16#0202	Outputs accessible through the DeviceNet master
	:	510 bytes
	16#03FF	1 output data area
Structure of the	• 1,024 bytes inaccessible through the DeviceNet master.
LUFP9 gateway’s memory:	Addresses	General data area
General data	16#0400	Input area reserved for the Mailboxes
	16#051F	(288 bytes)
	16#0520	Output area reserved for the Mailboxes
	16#063F	(288 bytes)
	16#0640	Internal area reserved for the management
	. . . . . . .	of the upstream network (384 bytes)
	16#07BF	(input area / output area / bi-directional area)
	16#07C0	Internal area reserved for the control registers
	. . . . . . .	(62 bytes / MSB first for 16-bit data)
	. . . . . . .	(data accessible via instance 16#01
	16#07FD	of class 16#AA: “Diagnostic Object”)
	16#07FE	Gateway status / DeviceNet master control
	16#07FF	(2 bytes)
	You can use the general data area for Modbus input data (from Modbus
	responses) if you do not want the DeviceNet master to have access to them. In
	this case, always use 16{#4000 as the starting address. If you use multiple times
	the same addresses in this area, the corresponding memory locations will be
	displayed in red in the “General Area” section of the “Sub-network Monitor”
	window (see page 51 for an example). However, this will have no consequences
	on the gateway during run-time.
Data transfer order	• DeviceNet network: LSB first and MSB last.
(swapping)	• Modbus RTU network: MSB first and LSB last.
	• LUFP9 gateway: MSB stored in the lowest memory address.
	→ In most cases, the option which should be chosen for Modbus data stored in
	the gateway’s memory is “Swap 2 bytes”. This option relates to all “Data” fields
	for Modbus queries and responses frames.

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