Specifications

Optimizing Performance
EIO0000000051 6/2010 105
5.3 Projecting Ethernet Network Performance
Network Load and Bandwidth Calculation Example
Network Devices
This example estimates the performance for an Ethernet network composed of the
following devices:
z a PLC that controls 3 remote I/O stations (A, B, and C)
z Ethernet communication module, acting as the local I/O scanner, installed in the
PLC rack
z an 8-port Ethernet managed switch
z a PC running used to obtain diagnostic data via explicit messages running the
following software:
z Unity Pro
z the Unity Pro Ethernet Configuration Tool
z 4 remote devices, acting as:
z an I/O adapter (A) for a rack of I/O modules
z a second I/O adapter (B) for a rack of I/O modules
z a remote I/O drive (C)
z a remote I/O scanner (D)
Unity Pro software running in the PC is used to configure the CPU controller.
For programming purposes you need a connection to the PLC either through the
CPU's Ethernet port or other supported programming paths.