YOKOGAWA Vnet/IP, Техническая информация

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2. Vnet/IP Network Configuration
2-10
TI 30A10A05-01E
2.2.3 Connection with Existing Systems
You can connect an existing V net or VL net system to Vnet/IP by using a V net router. You cannot
connect existing control networks such as HF Bus or RL Bus to Vnet/IP directly. However, you
can do so by using a BCV on V net.
n
Connection types
Use bi-directional or hierarchical connection when integrating Vnet/IP and V net projects.
l
Bi-directional connection
Both upper-level and lower-level projects can operate and monitor each other. The HISs in both
projects can operate and monitor the other project. You can apply bi-directional connection only
for CENTUM VP or CENTUM CS 3000 systems that are connected to each other.
020205E.ai
CENTUM VP
CENTUM CS 3000
(Vnet/IP)
CENTUM VP/
CENTUM CS 3000
(V net)
Upper-level project
Lower-level project
Figure Bi-directional connection
l
Hierarchical connection
The HIS from the upper-level project can operate and monitor the lower-level project. However,
the lower-level project cannot run or monitor the upper-level project. The following figure shows
an available configuration for a hierarchical connection. (*1)
*1: To connect Vnet/IP and V net projects that use CENTUM CS 3000 R3.04 or earlier, set Vnet/IP as the upper-level project.
020206E.ai
CENTUM VP
(Vnet/IP)
CENTUM VP/
CENTUM CS 3000
(V net)
Upper-level project
Lower-level project
CENTUM VP/
CENTUM CS 3000
(V net)
CENTUM VP
(Vnet/IP)
CENTUM VP
(Vnet/IP)
CENTUM VP
(Vnet/IP)
Figure Hierarchical connection
TIP
When connecting a Vnet/IP domain to an existing V net domain, the V net HIS has the following functional
limitations:
• If the Vnet/IP bus has an abnormal status, a message appears, indicating that there is a control bus
communication failure in all Vnet/IP domains.
To connect Vnet/IP domains with existing V net domains, the HIS function running in CENTUM CS 3000 R3.04 or
earlier has the following restrictions.
• The network type appears as “V net” on the Vnet/IP side.
• The System Status Overview window of Vnet/IP domains calls up a window by window name specification.
There are no limitations for the Vnet/IP HIS.
Aug.19,2011-00