Omron NX102-12 Series User Manual

O
T
T
O
T
O
T
O
T:
Target
O: Originator
Node 3Node 2
Node 1
If multicast is specified for data transmission and the node sends out just one multicast packet to other
nodes, it requires respective connections for them.
Example)
Node 3 sends out one multicast packet to Node 1 and Node 2. Node 3 has one target connection with
Node 1, and one target connection with Node 2, requiring two connections in total.
Y
ou need to keep in mind that the number of required connections is the same, whether multicast or
unitcast is specified for the communications.
T
O
T
O
T:
Target
O: Originator
Multicast
Node 3
Multicast
Node 2
Node 1
15-1-3
Packet Interval (RPI) Accuracy
A send processing delay occurs in a built-in 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 (±) (%)
0.5 to 1,000 ms (NX701 CPU Unit)
1 to 1,000 ms (NX102 CPU Unit)
2 to 1,000 ms (NX1P2 CPU Unit)
1 to 1,000 ms (NJ-series CPU Unit)
*1
15 − (RPI [ms]/100)
1,000 to 10,000 ms 5% of the RPI
*1. Note that the RPI for a NJ-series CPU Unit with unit version 1.00 to 1.02 is between 10 ms to 1,000 ms.
15 Communications Performance and Communications Load
15-5
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
15-1 Communications System
15
15-1-3 Packet Interval (RPI) Accuracy

Omron NX102-12 Series Specifications

General

Brand	Omron
Model	NX102-12 Series
Category	Controller
Language	English