Rpi Setting Examples - Omron NJ501-1300 User Manual

13 Communications Performance and Communications Load

13-2-5 RPI Setting Examples

The following examples explain how to calculate the packet intervals (RPIs) in the following network
configuration.
Conditions
• Connections:
Example:Seventeen NJ501-1300 Units are connected to the network.
Each device has one 100-word tag for transmission and sixteen 100-word tags for recep-
tion, so that the Units exchange data mutually. By default, the packet intervals (RPIs) are
set to 120 ms for all of the connections. The devices' IP addresses range from
192.168.250.1 to 192.168.250.17.
192.168.250.1
IP address:
NJ501-1300
Send
100CH
Out_01_a
100CH In_01_b
100CH In_01_c
100CH In_01_t
13-16
192.168.250.2 192.168.250.3
NJ501-1300 NJ501-1300
In_02_a In_03_a
Send
In_03_b
Out_02_b
Send
In_02_c
Out_03_c
In_02_t In_03_t
NJ501-1300: 17 Units
Connection RPI: 120 ms
NJ-series CPU Unit Built-in EtherNet/IP Port User's Manual (W506)
192.168.250.17
NJ501-1300
In_17_a
In_17_b
17 network variables,
In_17_c
100 words each
Send
Out_17_t