Omron CS1W-ETN21 IP Address Display/Setting Area, Application Setting device Setting area Remarks

DM Area Allocations Section 4-2

IP Address Display/Setting Area

m+98

m+99

15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
	(1)				(2)					(3)				(4)
	(5)				(6)					(7)				(8)

IP address: (1)(2).(3)(4).(5)(6).(7)(8) (Hex)

If the local IP address in the CPU Bus Unit System Setup is set to a value other than 0.0.0.0, this area (words m+98 and m+99) will act as an IP Address Display Area and the local IP address set in the CPU Bus Unit System Setup will be read and stored here when the power is turned ON or the Unit restarted. If the local IP address in the CPU Bus Unit System Setup is set to

0.0.0.0(the default setting), this value is read by the Ethernet Unit when the power is turned ON or the Unit restarted and is used as the local IP address.

Note	Choose the method used to set the local IP address as follows:
	Set the local IP address in the CPU Bus Unit System Setup when making
	other settings in the CPU Bus Unit System Setup. The settings are made with
	CX-Programmer.
	Set the local IP address in the allocated words in the DM Area when using the
	CPU Bus Unit System Setup at its default settings (i.e., for simple operation).
	The setting is usually made with a Programming Console.
Application	Setting device	Setting area	Remarks
Simple operation (i.e., The CPU	Programming Con-	Allocated words in	The setting in the allocated words in
Unit Bus System Setup is used at	sole (CX-Program-	the DM Area	the DM Area is enabled only when the
its default settings. Only the IP	mer can also be		IP address in the CPU Unit Bus Sys-
address is set.)	used.)		tem Setup is set to 0.0.0.0.
			If the IP address in the CPU Unit Bus
			System Setup is set to a value other
			than 00.00.00.00, this value is stored in
			the allocated words in the DM Area.
Operation with the CPU Unit Bus	CX-Programmer	CPU Unit Bus Sys-	The IP address set in the CPU Unit Bus
System Setup set as desired (i.e.,		tem Setup	System Setup is stored in the allocated
The default settings are not used.)			words in the DM Area.
Replacing the previous CS1W-	---	---	The IP address is set using a rotary
ETN01/CS1W-ETN11 and using			switch in the previous CS1W-ETN01/
the previous settings.			CS1W-ETN11 Ethernet Units. In the
			new Ethernet Units, the IP address set
			with the rotary switch is displayed in the
			DM Area. This area is backed up by the
			battery, so the IP address can be used
			without resetting.

Note (1) If a value other than 00.00.00.00 is set as the local IP address in the CPU Bus Unit System Setup, even if an IP address is set in the allocated words in the DM Area, it will be overwritten with the setting in the CPU Bus Unit System Setup.

(2)It is not possible to set the following IP addresses. If any of these values are set, the ERH indicator will flash.

•IP addresses where all network number bits are 0 or 1.

•IP addresses where all host number bits are 0 or 1.

•IP addresses where all subnet number bits are 1.

•IP addresses that start with 127 (7F hexadecimal, e.g., 127.35.21.16).

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