Operator dialogue terminals - Trinet

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Setup 3 Softwares and Web servers 3 OFS data server software Setup Ethernet TCP/IP 7 4 OFS Station (V3.0) 1 Databases 7 2 5 symbols.xvm (Unity Pro) symbols.prj (Concept) symbols.scy (PL7) Ethernet TCP/IP 3 Quantum 6 Premium 8 Unity Pro project station 3 Momentum TSX Micro OFS software can be integrated into control system architectures such as the one shown above: 1 PC running OFS software including the OPC Server. 2 PC running the Client application, which accesses the PLC data via OFS. 3 Communication networks linking the PC, running OFS software, with the PLCs. 4 OPC communication protocol. 5 Modbus on TCP/IP communication protocol. 6 Uni-TE on TCP/IP communication protocol. 7 OFS software program accesses Unity Pro project variables directly. Additionally, it conducts a check to verify that these variables are consistent with those of the Premium or Quantum PLC. Depending on the usage, the Client application and OFS software can be located on the same PC or on two different PCs 1 and 2, linked by a TCP/IP Ethernet network 7. Nota : Depending on the software used for Modicon PLCs: - PL7 software generates PLC variable symbol export files. These export files (symbols.scy) should be integrated in the OPC Server. - Concept: the variables can be accessed directly in the project (file.prj) of the Concept application. This direct link requires Concept (version > V2.0) to be installed on the OFS station 1. - Unity Pro programming software generates export files from PLC variable symbols. These export files (.xvm symbols) should be integrated into the OPC Server when the Unity Pro project development station 8 is not accessible via the OFS station. If the Unity Pro project station is permanently accessible via the OFS station, the former exchanges directly with the variables of the Unity Pro project (via P. server). Presentation: page 3/38 Functions: page 3/40 Reference numbers: page 3/41 3/39
Functions 3 Softwares and Web servers 3 OFS data server software Functions Development of Client applications OFS software has two interfaces: 3 b OPC Automation interface. Particularly suitable for “end” users, it enables the development of OPC Client applications in Visual Basic, in Visual Basic for Excel, but also in C++. b OPC Custom interface. Used primarily by “suppliers” of automated control system or industrial IT products. It enables the development of applications in C++ in order to access the OFS software OPC Server. This interface is aimed at software development experts in particular, so that they can integrate the Client application into their standard products. This is the interface with the highest performance, in terms of access time, to data stored in the OPC Server but it requires extensive knowledge of C++ programming. OFS software services The various OFS software services enable: b Access to the Server in local or remote mode. Symbols are accessed either: v viaan.xvm/.prj/.scy-formatexportfile(dependingonthesoftwareused), v or via direct access to the Unity Pro project in the case where it is accessible via the OFS station. b With Unity Pro software, when accessing the Unity Pro project directly, the OFS software program transparently manages the consistency of the Unity Pro project symbol database with that of the Premium or Quantum PLC. In the event of inconsistency, three types of operation are possible: v "strict" mode, which stops exchanges, v "symbolic" mode, which signals an alert to the user, v "debug" mode, which does not hold up debugging of the architecture. b Access to variables in the form of addresses or symbols. b Reading and writing of variables to one or more PLCs present on the communication network connected to the PC running the OFS software. These variables can be: v the sum of all variables belonging to the Unity Pro projects (bits, words, spreadsheets, DDT/IODDT-type compound data), v system variables (OPC System Group: PLC status, diagnostics, etc.), v internal variables representing the PLC words or registers (OPC User Group). b Use of a notification mechanism that transmits change of status values to the Client. Communication between the OPC Server and the PLC uses polling or can be initiated by the PLC in order to decrease the volume of exchanges (“push data”). b Definition of dead bands for measurement noise filtering (floating variables). Communication with PLCs The various variables contained in the PLCs are accessed via standard Telemecanique communication protocols using the following: b Uni-Telway bus and Ethernet/Fipway networks, Uni-TE protocol on TCP/IP, as well as the PCIway communication driver when TSX PCI 57 Atrium coprocessors (with Unity Pro) are used. b Modbus serial link, Ethernet/Modbus Plus networks and Modbus protocol on TCP/IP. The various corresponding communication drivers are supplied in the OFS software (exceptModbusPlusdriver,whichissuppliedwiththePCModbusPluscard). Presentation: page 3/38 3/40 Setup: page 3/39 References: page 3/41
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