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Adjusting the Communications Load Section 10-2

Example Conditions

Connections

In this example, there are 10 CS1W-EIP21 Units and 10 CJ1W-EIP21 Units

for a total of 20 devices connected in the network. Each device has one 100-

word tag for transmission and nineteen 100-word tags for reception, so that

the Units exchange data mutually.

By default, the packet intervals (RPI) are set to 10 ms for all of the connec-

tions. The devices’ IP addresses range from 192.168.250.1 to

192.168.250.20.

Checking the Device

Bandwidth Usage

When the Detail Button is clicked in the Usage of Device Bandwidth Area, it is

apparent that the percentage of the allowed tag data link bandwidth being

used by each device’s tag data link (Usage of Capacity) is 39.67%, as shown

in the following dialog box.

IP address:

1 92 .16 8. 250.1 19 2.1 68 .2 50.2 1 92.168. 250.3

CS1W-EIP 21 CS 1W-EIP2 1

100 words

Transmit

192.168.250.20

CJ1W-EIP21

10 CS1W-EIP21 Units + 10 CJ1W-EIP21 Units = 20 Units total

The RPI is 10 ms (ethernet default) for all connections.

Tag data link area with

100 words × 20 Units

CS1W-EIP 21

100 words

Omron CJ1W-EIP21 - 10-2010 User Manual

Questions and Answers: