Transcript OPC Data - Advanced Traffic Control

“Painless” Continuous Operations
System Conversions
By:
Advanced Traffic Control, Inc.
Coconut Creek, Florida
Need To Replace Your Legacy
System?
• Convert With Virtually No Downtime
HOW?
With Advanced Traffic Control, Inc.
“Painless” Conversions
• Goals
– Minimize System Downtime
– Maximize Fail-Back Options To Allow
Comprehensive Testing
– Minimize Critical Timeframe So That
Conversion Can Be Done Over As Long A
Period Of Time As Needed
• Solution – Advanced Traffic Control, Inc.!
We’ve Done This Before!
• Alcoa Aluminum Point Comfort – Modcomp to
Dec Alpha with VMS
• Hampton Roads Bridge Tunnel – Legacy to
Distributed PCs with virtually NO downtime
• Elizabeth River Tunnel – Legacy to Distributed
PCs with virtually NO downtime
• Monitor Merrimac Memorial Bridge-Tunnel –
Legacy to Distributed PCs with Virtually NO
Downtime
What is NOT “Painless”
• Converting proprietary code from a proprietary
system.
– Converting functionality that you can now purchase as
a component (such as we see in modern general
purpose Human Machine Interfaces).
– Converting custom communications code rather than
using newer communications technologies that are
available off-the-shelf.
– Converting monolithic designs to modern client/server
architectures.
Two Types Of Data To Handle
• Data only contained in an I/O Stream
– Camera Control Data (PTZ control)
– Raw Field Controller Data
• API or Open Standard Accessible Data
– ODBC Databases
– Legacy Databases (including Real-Time)
– Any Global Data Accessible To A Program
What About Direct I/O Devices?
• Some legacy applications generate their
own field protocol, not going through ANY
common API accessible data.
– Camera Controls
• Real-time field data
– Device States, Status
– Traffic Monitoring Data
Directly Controlled
Device
Switch/
Data Tap
ATC Smart Switch works great!
Off The Shelf OPC Based Control System
ATC Universal
Protocol Driver
A Switch or Data Tap
Will Allow Testing and
Parallel Operations
Caution!
• If you directly map all of the data in the field
equipment into your replacement system right
away, you might not be able to keep the systems
synchronized so that you can go back and forth
during testing without effecting the motoring
public.
• It’s better to get whatever data you can from the
existing system. That way it’ll be the same.
API or Open Standard Accessible Data
• This Data Can Be Moved To Another System By
Converting It To A Standard Format (OLE for
Process Control – OPC)
– Open Database Connectivity (ODBC) databases can be
converted through standard relational database
techniques and accessed via networking
– Create a simple program using API Subroutines or
accessing data in memory resident global common
region to send and receive data
– Use the ATC Universal OPC-to-Legacy Solution to
convert the data to OPC
OPC is OPC
Convert to Live Data Later
• If data arrives in the new system as OPC
data, the system doesn’t care where it came
from.
• Extracting data from the I/O stream is
simple using the ATC Universal OPC-toLegacy Solution, so doing it later is not a
major impact.
Existing Field Equipment
Off The Shelf OPC Based Control System
OPC
Data
Legacy System
API data
transfer
program
Raw
Data
ATC Universal
OPC-to-Legacy
Solution
Add Data Transfer Program To Send Data
To The New System
-NO
Changes to Operations
Existing Field Equipment
Data Tap
Off The Shelf OPC Based Control System
Legacy System
API data
transfer
program
OPC
Data
Raw ATC Universal
Data OPC-to-Legacy
Solution
HMI
Develop New Operator
Screens Using OPC
Tag Names
Existing Field Equipment
Data Tap
Off The Shelf OPC Based Control System
OPC
Data
Legacy System
API data
transfer
program
Raw
Data
ATC Universal
OPC-to-Legacy
Solution
Train The Operators On
The New Operator Screens
(Legacy System Stays Available)
Existing Field Equipment
Data Tap
Off The Shelf OPC Based Control System
Legacy System
API data
transfer
program
OPC
Data
OPC ATC Universal
Data OPC-to-Legacy
Solution
Move Operations,
Keeping Old Consoles As Backups
Existing Field Equipment
Control Tasks
Data Tap
Off The Shelf OPC Based Control System
Legacy System
API data
I/O Processes
transfer
program
OPC
Data
OPC ATC Universal
Data OPC-to-Legacy
Solution
Move Control Logic from
Legacy System to New System
Existing or New Field Equipment
Field
Communications
Control Tasks
OPC Data
Legacy System
API data
transfer
program
I/O
OPC
Data
ATC Universal
OPC-to-Legacy
Solution
Off The Shelf OPC
Based Control System
ATC OPC
To NTCIP
Move I/O Points And
Controllers To New System
AS TIME ALLOWS
Field Equipment
NTC/IP
Controllers
Legacy
Controllers
NTC/IP to OPC
Driver
ATC Universal
OPC-to-Legacy
Solution
OPC
Data
Control Tasks
OPC
Data
Off The Shelf OPC Based Control System
HMI
Remove Unnecessary
Components – The OLD
System!
Field Equipment
NTC/IP
Controllers
Legacy
Controllers
NTC/IP to OPC
Driver
ATC Universal
OPC-to-Legacy
Solution
OPC
Data
PC 1
Control Tasks
OPC
Data
PC 2
PC 3
HMI
PC n
ATC Tools For Conversion
• ATC Universal OPC-to-Legacy Solution
– Serial or TCP/IP based packet protocols
– Packet structure defined by the user
• ATC NTCIP to OPC Driver
– NTCIP to field equipment and OPC data to the system
• ATC Smart Serial Switch
– Will allow switching of serial lines automatically
– Onboard microprocessor can handle legacy
synchronous protocols and custom protocol
conversions.
Want To Know More?
• Write or Visit Us:
Advanced Traffic Control, Inc.
4811 Lyons Technology Parkway #7
Coconut Creek, Florida, 33073
• Call Us
Telephone: (954) 428-9100
Toll-Free 1-866-242-4487 [866-atc4its]
• Check our web site
www.atc4its.com
• Email Us.
[email protected]