OPTO 22 SNAP-PAC-R1, Руководство пользователя

Страница: 41 / 96

CHAPTER 3: SYSTEM INFORMATION
SNAP PAC R-Series Controller User’s Guide
33
33
Network Segmenting: Ethernet Connections to Host and I/O Units
The following diagram shows two Opto 22 I/O units connected together over an Ethernet
network and controlled by a SNAP PAC R-series controller running a PAC Control strategy.
The network shown in this diagram requires PAC Project Professional.
The controller is also connected to a larger, separate enterprise Ethernet network to provide
data to PCs running Opto 22’s PAC Display HMI software, OptoOPCServer, and
OptoDataLink. Sitting between the two networks, the SNAP PAC R-series controller
segments enterprise traffic from the control network.
PC running
OptoOPCServer
and OptoDataLink
PC running PAC
Display
Professional
Ethernet switch,
network #1
Additional I/O units are controlled
by the R- series controller on an
isolated network.
Ethernet switch
SNAP PAC R-series
SNAP PAC R-series controller communicates with host computers through one network
interface and controls I/O both directly on the rack and through the other Ethernet interface.
Control Network
Field devices
location #1 Field devices
location #2
Enterprise Network