Omron NX Series - Packet Interval (RPI) Accuracy

12-1-3
Packet Interval (RPI) Accuracy
A send processing delay occurs in an EtherNet/IP port when data packets are sent based on a packet
interval (RPI).
This delay varies within the RPI error margin as shown below
, so the send processing may be delayed
for the maximum value for each RPI.
Packet interval (RPI) RPI error margin (±) (%)
1.0 to 1,000 ms 15 − (RPI [ms]/100)
1,000 to 10,000 ms 5% of the RPI
0
2
4
6
8
1
0
12
14
16
RPI [ms]
RPI error (±) (%)
0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000
12 Communications Performance and Communications Load
12-6
NX-series EtherNet/IP Unit User's Manual (W627)