Omron CS1W-ETN21 operation manual Default Setting, Unit Setup, Operation status, +98 +99

Basic Settings Section 2-9

Default Setting

The Ethernet Unit operates using the default IP address when the Unit is mounted to the PLC and initially registered in the I/O tables (i.e., when the Unit settings have not been made and the IP Address Display/Setting in the CPU Bus Unit Words Allocated in the DM Area is still all zeros).

The default IP address is determined as follows:

Default IP address = 192.168.250.FINS node address

The FINS node address is set by the rotary switch on the front of the Ethernet Unit. If the defaults are used for the IP address and the Unit settings, the set- tings will be as shown below.

Item	Operation status
IP address	192.168.250.FINS node address
Subnet mask	255.255.255.0 (Class C mask)
Broadcast settings	4.3BSD
Baud rate	Auto
TCP/IP keep-alive	120 min.
IP router table	None (IP router not enabled)

Setting the IP Address in the CPU Bus Unit Words Allocated in the DM

Area

This method sets the IP address in the IP Address Display/Setting Area in the CPU Bus Unit Words Allocated in the DM Area, when the IP address is not set in the Unit Setup. When the IP address is set in the Unit Setup, the IP Address Display/Setting Area becomes the area for displaying the settings.

To make settings in the IP Address Display/Setting Area, use the CX-Pro- grammer or Programming Console to write the values. In order for the new settings to go into effect, either the Ethernet Unit must be restarted or the power must be turned ON again to the PLC.

15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
m+98	(1)				(2)				(3)					(4)
m+99	(5)				(6)				(7)					(8)

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

If only the IP address is set, according to the IP Address Display/Setting Area, and the defaults are used for all other Unit settings, the settings will be as shown below.

Item	Status
IP address	Words allocated for CPU Bus Unit (m+98 to m+99)
Subnet mask	Uses value corresponding to IP address class.
Broadcast settings	4.3BSD specifications
Baud rate	Auto
TCP/IP keep-alive	120 minutes
IP router table	Not set. (IP routing not supported.)

Unit Setup

This method sets the IP address by first selecting the Ethernet Unit from the CX-Programmer's I/O Table Window while connected online, and then setting the IP address from the Unit Setup.

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