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9 Setting Up Slave Terminals

NX-series EtherNet/IP Coupler Unit User’s Manual (W536)

9-5 Setting Tag Data Links

9-5-6 Connection Settings

2 After you make all of the settings, click the OK button.

Precautions for Correct Use

If you set a tag data link with a short packet interval (RPI) when many NX Units are connected

to the EtherNet/IP Slave Terminal, a Tag Data Link Timeout may occur depending on the load

conditions on the EtherNet/IP Slave Terminal. If that occurs, increase the length of the packet

interval (RPI) or reduce the number of NX Units that are mounted.

Originator Variable Select and allocate the originator node’s tag set.

• In: Select the originator’s input (consume) tag set.

• Out: Select the originator’s output (produce) tag set.

Connection Type Select whether the data is sent in multi-cast or unicast (point-to-point) form.

The default setting is multi-cast.

• Multi-cast connection:

Select when the same data is shared by multiple nodes. This setting is usually

used.

• Point-to-point connection:

Select when the same data is not shared by

multiple nodes. In a unicast connection, other

nodes are not burdened with an unnecessary

load.

Note: Refer to 8-2-2 Creating Tag Data Links on page 8-7 for details on using

multi-cast and unicast connections.

RPI Set the data update cycle (i.e., the packet interval) of each connection between

the originator and target.

• Minimum RPI for the EtherNet/IP Coupler Unit is 4 ms.

• The default setting is 50 ms (i.e., data is updated once every 50 ms).

• The interval can be set to an even number of ms (4, 6, 8,...)

• The interval can be set to between 4 and 1000 ms for the CJ2M-EIP21 and 0.5

and 10,000 ms for other CPU Units in 0.5-ms increments.

Timeout Value Set the time until a connection timeout is detected. The timeout value is set as a

multiple of the packet interval (RPI) and can be set to 4, 8, 16, 32, 64, 128, 256,

or 512 times the packet interval. The default setting is 4 times the packet interval

(RPI).

Setting Description

Omron NX-EIC202 User Manual

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