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Micro automation platform
Functions (continued),
references
0
OFS data Server software
Setup (continued)
Development of Client applications
OFS software has 2 interfaces:
/ OPC Automation interface
Particularly suitable for “end” users and enables the development of OPC Client applications in Visual Basic, in Visual
Basic under Excel, but also in C++.
/ OPC Custom interface
Used primarily by “suppliers” of control system or industrial communication products. It enables the development of
applications in C++ in order to access the OFS software OPC Server. This interface is more suitable for software
development experts so that they can integrate the Client application into their standard products. This is more high-performance interface, in terms of access time to the data stored in the OPC Server but requires, for its programming,
a good knowledge in C++ programming.
OFS software services
The various OFS software services enable:
/ Access to the Server in local or remote mode
/ Access to variables in the form of addresses or symbols
/ Reading and writing of variables to one or more PLCs present on the communication network connected to the PC
supporting the OFS software. These variables can be :
- system variables (OPC System Group : PLC status, diagnostics, etc)
- internal variables representing the PLC words or registers (OPC User Group)
/ Use of a notification mechanism which transmits change of state values to the Client. Communication between the OPC
Server and the PLC is polling or can be, on the initiative of the PLC to decrease the flow of exchanges (“push data”)
/ Definition of dead bands for measurement noise filtering (floating variables).
Communication with PLCs
The various variables contained in the PLCs are accessed via Uni-TE and Modbus protocols using the following:
/ Uni-Telway bus and Fipway, Uni-TE networks on TCP/IP as well as ISAway when using a PCX coprocessor
/ Modbus serial link, Modbus Plus and Modbus networks on TCP/IP.
The various corresponding communication drivers are supplied in the OFS software (except Modbus Plus driver which is
supplied with its PC Modbus Plus card).
The link with PL7 or ProWORX variable symbols is created by means of export files for these variables generated by PL7
or ProWORX development software.
Concept variables are accessed directly with the Concept application. In addition, the OFS Server dynamically ensures
the consistency of data between the Concept databases and OPC Client applications.
References
The OFS offer comprises:
/ An OPC Server software, compatible with the OPC Data Access 2.0 standard
/ An OPC Server simulator (for debugging the application when no PLCs are present)
/ A tool for configuring the Server on the PC
/ A example of OPC Client for setting up applications.
/ The drivers for connection to X-Way and Modbus networks TSX DRV 12M
/ The setup documentation on CD-Rom.
Supplied on CD-Rom, this software operates autonomously on a PC. Nevertheless, export files for variables generated
by PL7 or ProWORX development software need to be present. The direct link with Concept applications requires
Concept software (version 2.1) to be installed on the same station.
OFS software for PC compatibles (minimum configuration: Pentium 266 MHz processor, 64 Mb of RAM memory) is
compatible with Windows 95 (with Service Pack 1 and DCOM), Windows 98, Windows NT 4.0 (with Service Pack 5) or
Windows 2000 operating systems.
Description
Function
Reference
Weight
kg
OFS data
Server
software
Enables the development of Client applications,
accessing PLC data (Micro/Premium/Momentum/
Quantum/TSX Serie 7/April) via the OFS Server
TLX CD /OFS 25M (1)
0.160
OFS software
update
Enables the update for previous version of OFS data
Server software
TLX UCD /OFS 25M (1)
0,160
User’s manual
Setting multilingual manual (FR, EN and DE) for OFS data TLX DM OFS 25M
Server software (paper format)
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(1) To order a site licence for 1 station replace / by : none character, licence 10 stations: 10, licence 20 stations: 20,
licence 200 stations: UN.
43105-EN.fm/3