Omron CJ1W-EIP21 User Manual

12-1
CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)
12
12-1 Communications System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-2
12-1-1 Tag Data Link Communications Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-2
12-1-2 Calculating the Number of Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-4
12-1-3 Packet Interval (RPI) Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-5
12-2 Adjusting the Communications Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-6
12-2-1 Checking Bandwidth Usage for Tag Data Links . . . . . . . . . . . . . . . . . . . . . . . 12-7
12-2-2 Tag Data Link Bandwidth Usage and RPI . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-8
12-2-3 Adjusting Device Bandwidth Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-9
12-2-4 Changing the RPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-10
12-2-5 RPI Setting Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-16
12-3 I/O Response Time in Tag Data Links . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-21
12-3-1 Timing of Data Transmissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-21
12-3-2 EtherNet/IP Unit Data Processing Time . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-22
12-3-3 Effect of Tag Data Links on Task Periods . . . . . . . . . . . . . . . . . . . . . . . . . . 12-24
12-3-4 Maximum Tag Data Link I/O Response Time . . . . . . . . . . . . . . . . . . . . . . . 12-25
12-4 Message Service Transmission Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-27
Communications Performance
and Communications Load

Omron CJ1W-EIP21 Specifications

General

Brand	Omron
Model	CJ1W-EIP21
Category	Controller
Language	English