Packet Interval (Rpi) Accuracy - Omron Sysmac NJ-series User Manual

14-1-3 Packet Interval (RPI) Accuracy

The send processing delay occurs in the built-in EtherNet/IP port when data packets are sent once
each packet interval (RPI). This delay varies with the RPI error shown in the following graph, so the
send processing delay time is the maximum value for each RPI.
0.5 ms to 1,000 ms (NX701 CPU Unit), 2 ms to 1,000 ms (NX1P2 CPU Unit),1
ms to 1,000 ms (NJ-series CPU Unit)*1
1,000 to 10,000 ms
*1 RPI is 10 ms to 1,000 ms on NJ-series CPU Units with unit versions 1.00 to 1.02.
16
14
12
10
8
6
4
2
0
0 1000
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User's Manual (W506)
14 Communications Performance and Communications Load
Packet interval (RPI)
2000 3000 4000 5000
RPI [ms]
15 - (RPI [ms]/100)
5% of the RPI
6000 7000 8000 9000
RPI error (±) (%)
10000
14-5
14