Centum VP maintenance training part3

June 2012

Yokogawa Electric Corporation

<ISD-MASP-S10097>
YOKOGAWA
VIETNAM
Copyright
© Yokogawa
Electric CO.LTD
Corporation
<ISD-MASP-S10097>
<1/7/2011>
Copyright
©
Yokogawa
Electric Corporation
SERVICE DEPARTMENT


Maintenance Course

Yokogawa Vietnam Co. Ltd
Service Department

YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation

SERVICE


Maintenance Course
Schedule for the day:
Session Starts:

9:00 – 10:30 am

Tea Break:

10:30 – 10:45 am

Lunch:

12:00 – 1:00 pm

Session Resume:
Tea Break:
Sessions Ends:

YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE

1:00 – 3:00

3:00 – 3:15
5:00

pm
pm

pm


Agenda

CENTUM VP
Maintenance Course
Day 3

Network operation
Vnet TCP/IP Communication Function
Vnet/IP Network Utility
Vnet Utility Commands
Troubleshooting of overall windows
Hands-on Exercises

YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE

Flow Chart of Installation Procedure
Start

Installation of Windows

Settings of Networ

Installation of Windows
Service Pack

Installation of Centum
VP Software

Installation of Windows
Security patch

Setting of IT Security

Settings of Windows

Setting after Installation

YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE

VP maintenance

Network Operation

YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE


Communication Function Overview
Vnet is the core bus of the CENTUM VP communication function.
Vnet is real time system control bus used to connect the component units: it main
functions are to perform HIS-FCS control data communication and data equalization
between HIS’s at high speed.
This special protocol (Vnet protocol) is mainly related to FCS. The timing must be
accurate. Communication handled by CS3000/Centum VP Vnet protocol are:

Read/write of FCS data (FCS-FCS and HIS-FCS)

Broadcast of FCS messages (FCS-HIS)

Broadcast of HIS messages (HIS-HIS)

Time equalization


Communication for operating status display

On-line maintenance communication

YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE


Information Communication Flow
The general-purpose (Open Communication)protocol is used for communicating
a large volume of data, file exchange and communication using a general-purpose
interface.
Communication handed by General Protocol (TCP/IP) are:
 Equalizing communication
 Acquisition of status display data
 Other station trend
 “Download”, “IOM download” and “Tuning parameter save” in
operation status display window
 Recipe equalization between HISs
 Server client processing of process control function.
 Open data interface
 Recipe loading

YOKOGAWA

VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE


Network specification

Both Vnet and Ethernet are mandatory
Ethernet is always used for communications in HIS-HIS. If a failure occurs on
Ethernet, communication do not switch to Vnet (this is to protect the control bus and
FCS in a large scale system
TCP/IP socket communications in HIS/FCS are made via Vnet
YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE


Control Communication and Open Communication

Vnet/IP is designed as a duplexed network. In Vnet/IP, a duplexed bus is
configured with independent subnets of bus 1 and bus 2.
If both buses are normal, bus 1 is used for control communication, and bus 2 is
used for open communication.

If bus 1 fails, control communication is performed using bus 2. In this case,
because open communication is also performed using bus 2, control
communication and open communication coexist. Therefore, to secure the band for
control communication, the band for open communication will be restricted.

YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE


Control Communication and Open Communication
: Yokogawa

BUS 2

OPC
Open Vnet

PIMS
Open

HIS
Open Vnet

HIS
Open Vnet

Open communications

hardware

PLC communications

Communications
　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　
between HIS

Control communications
(for backup)

Control communications
(for regular use)

BUS 1
YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE

Vnet
FCS

Open

Vnet

APCS

Vnet

Open

GSGW

Open
PLC


Switching Mechanism
HIS02
HIS01-SW2 FAIL
Bus1

Bus2

SW1

HIS01

SW4

SW2

SW5

SW3

SW6

FCS01

YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE

HIS01-HIS02: Bus2


Switching Mechanism
HIS02
HIS01-SW2 FAIL
Bus1
SW1

HIS01

Bus2
SW4

SW2

SW5

SW3

SW6

YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE

HIS01-FCS01: Bus2


Switching Mechanism
HIS02
HIS01-SW2 FAIL
Bus1

Bus2

SW1

HIS01

SW4

SW2

SW5

SW3

SW6

FCS01

YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE

HIS02-FCS01: Bus1


Switching Mechanism
HIS02
HIS01-SW2 Recover
Bus1

Bus2
SW4

SW1

HIS01-HIS02: Bus1
HIS01-FCS01: Bus1
HIS02-FCS01: Bus1

HIS01

SW2

SW5

SW3

SW6

FCS01

YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE


Specification when Connecting Devices in a Vnet/IP Domain
The specification when connecting devices in a Vnet/IP domain is as follows:

• Number of Vnet/IP stations connected: Max. 64 units Vnet/IP stations including
V net router
• Other general-purpose Ethernet communication devices
(PCs, routers, etc.): Max. 124 units
• Levels of layer 2 switches: Max. 7 levels
• Distance between layer 2 switch and station: Max. 100 m (when UTP is used)
• Connection distance between layer 2 switches: Max. 5 km (when optical fiber is
used)

YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE


Vnet/IP Communication Function Overview
• 1 Gbps Ethernet (1000Base-T) redundant bus
Allows the use of commercially-available network devices.
• Compatible with Vnet driver I/F.
No modification of Vnet drivers is required.
Same system scale: 16 domains (31 by special order), 64 STN/domain
• Supports both control communications and open communications.
Secures communications bandwidth for control communications by means of
bandwidth restrictions, and by restricting the inflow from external open devices.

YOKOGAWA
VIETNAM CO.LTD

<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE


Vnet/IP Communication Function Overview
Vnet/IP communications functions allow functional compatibility with Vnet.

YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE


VP maintenance

Time Management Function

YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE

Overview of Time Synchronization
Time synchronization in a Vnet/IP network is performed in time group units. Define a time
group in domain units. To synchronize each station in a Vnet/IP network with UTC, connect an
SNTP server in each time group.

SNTP: Simple Network Time Protocol
UTC: Universal Time of Convention
Time Group is set in the domain properties of the FCS
YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE


Accuracy of Time Synchronization
The Time Management function of a Vnet/IP station is the same as the V net system
of the CENTUM CS 3000. Time management is performed via a control bus. The
hardware of Vnet/IP performs time synchronization in the entire Vnet/IP network.
This time is referred to as the network time. The relative time accuracies of the
network time are shown below:

YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE


Time Group
The time group denotes a range in which time synchronization is performed. The
entire Vnet/IP network can be defined on one time group. On the other hand, by
separating domains in the same Vnet/IP network into time groups, the range in
which time synchronization is performed can be limited. For example, if the
deviation in relative time due to variations in transmission delay time between
Vnet/IP domains cannot be ignored, separate time synchronization between domains
by defining time groups, and connect an SNTP server to each time group. By this,
the deviation in relative time between domains can be suppressed to 1 msec, the
deviation in absolute time of an SNTP server.
Specify a time group using a number from 0 to 7. The default time group number is
1. To perform time synchronization only in a domain, set the time group number to
0. If an SNTP server does not exist in a time group, one of Vnet/IP stations in a time
group will act as a time master, and other stations in the same time group will
synchronize with the network time of the time master.

YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE

Simple Network Time Protocol (SNTP) Server
To synchronize the network time of a Vnet/IP station with a UTC, connect an
SNTP server in each time group. Only one SNTP server can be connected to each
bus within the same time group. Generally, connect an SNTP server to bus 1 of
Vnet/IP. To duplex SNTP servers, add one SNTP server to bus 2 of Vnet/IP.
The IP address of an SNTP server connected to Vnet/IP is as follows:
IP address of an SNTP server connected to bus 1 of Vnet/IP
192.168.<domain number>.254
IP address of an SNTP server connected to bus 2 of Vnet/IP
192.168.<128 + domain number>.254

YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE


Time Synchronization after Powering On a Station

After a station is powered on, the time of that station gradually approaches
the network time of the same time group. Within 5 seconds after system
startup, the relative time accuracy reaches 1 second, and within 5 minutes,
the relative time accuracy reaches 1 msec.

YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE


VP maintenance

HIS communication
Function Troubleshooting

YOKOGAWA
VIETNAM CO.LTD
<ISD-MASP-S10097>

CopyrightDEPARTMENT
© Yokogawa Electric Corporation
SERVICE