FINS Omron on TCP/IP

Transcription

1 Headquarters Subsidiaries France applicom international s.a. 43, rue Mazagran Caudebec-lès-Elbeuf International contact tel: + 33 (0) fax: + 33 (0) infointl@applicom-int.com National contact tel: + 33 (0) fax: + 33 (0) infofr@applicom-int.com Germany applicom international GmbH Im Gässle Leinfelden-Echterdingen tel: / fax: / infode@applicom-int.com United States applicom international, Inc 4340 Redwood Hwy, Suite D-309 San Rafael, CA tel: + 1 (415) fax: + 1 (415) infousa@applicom-int.com Benelux Euro View Services s.a. 273, Chaussée de Lodelinsart 6060 Gilly / Belgique tel: + 32 (0) fax: + 32 (0) infobe@applicom-int.com Italy I.M.A. S.r.l. (Italia Manutenzione Automatismi Piazza della Vittoria, 10 int.6 I Genova tel: fax: infoit@applicom-int.com FINS Omron This document is for informational purposes only and is not contractual. applicom international reserve the right to improve their products at any moment without notice. applicom international, applicom the associated logos and the phrases opening up the industrial communication universe are all trademarks of applicom international and/for its subsidiaries. All other products or trademarks mentioned in this document are the property of their respective owners. applicom international - july 2000

2 Messaging The OMRON PLCs C,CV and CS series use TCP/IP for communication on Ethernet. The messaging used is FINS (Omron application layers). All layers produced for this protocol can therefore be represented according to the following OSI model : / page 2/11 applicom, open industrial communication concept 108

3 The Transport TCP and Network IP layers allow the communication, i.e. the data transport between the various peripherals presents on the network (PLCs, sensors, devices ). The application layer, here the FINS messaging, defines the data format of exchanges. The FINS protocol authorizes a frame length of 1534 bytes. However, the size of the frames carried on the network can be limited to a smaller size depending on the path taken in the OMRON network architecture to access this device : " TCP/IP : 1534 bytes. " Sysmac Net: 1534 bytes. " Controller Link: 542 bytes. The FINS messaging on applicom interface handles exchanges in the Omron architecture with PLC couplers such as: System Range Sysmac C200 HX, HG, HE, HZ Sysmac CV2000-CPU01-EV1 Sysmac CV500-CPU01-EV1 Sysmac CV1000-CPU01-EV1 Sysmac CVM1-CPU01-EV1 Sysmac CVM1-CPU11-EV1 sysmac CVM1-CPU21-EV1 Sysmac series CS1 Please contact us for other supported CPU/couplers.. Ethernet driver C200 HW-PCU01 (Ethernet PCMCIA board: RJ45) CV500-ETN01 (AUI interface) CS1W-ETN01 (AUI interface) The applicom interface provides in standard the following functionality: " Multi-request client mode to OMRON SYSMAC C,CV and CS, reading and writing variables in the various PLC memory areas. " Server mode for Omron SYSMAC CS PLCs, access to the applicom database and device monitoring. The use of FINS messaging is available on applicom interface simultaneously with the other TCP/IP messagings from applicom offer TCP/IP multi-messagings. / page 3/11 applicom, open industrial communication concept 109

4 Mode client In client mode, the applicom interface takes the communication initiative to the server equipments. The applicom client mode can be used to send several requests simultaneously to an equipment before having received the first response: this operation is called multirequest. To send several requests simultaneously, several connections are used. Each request is sent on a virtual communication channel (UDP channel). The applicom interface manages 128 connections. Only 32 of them can be used simultaneously for all equipments. The applicom interface can read and/or write major PLC data types thanks to applicom library/dll, DDE server, OPC server and ActiveX control: / page 4/11 applicom, open industrial communication concept 110

5 C serie Device data type Input/ Hold Auxiliary Link Memory Timer/ Output Relay Relay Relay Data Counter (Present value) Type applicom Bit CIO HR AR LR Word (16 bit) standard format D, DM, E TC BCD format double word (32 bit) DD, DDM,DE flotting word (32 bit) IEEE format FD, FDM, FE CV serie Device data type Input/ Memory Output Data Timer Counter applicom Data Bit CIO TN, G, A, ST T C Word (16 bit) Standard format CIO D, DM, E, G, A PVT PVC BCD format Double word (32 bit) DCIO DD, DDM, DE, DG, DA Flotting word (32 bit) IEEE format FCIO FD, FDM, FE, FG, FA / page 5/11 applicom, open industrial communication concept 111

6 CS serie Device data type Input/ Memory Output Data Timer Counter applicom Data Bit CIO HR, A, W T C Word (16 bit) " standard format CIO D, DM, PVT PVC " BCD format E, A, W double word (32 bit) DCIO DD, DDM, DE, DA, DW flotting word (32 bit) FCIO FD, FDM, FE, FA, FW IEEE format OMRON services supported for C,CV,CS series [1] Equipment identification Run Stop [1]:Only available via applicom library/dll Maximum number of variables per request with OPC server [2] Variable type Read Write [3] C,CV,CS series C,CV,CS series Bit Word double word flotting word Timer/Counter [2]:Frame length of 1534 bytes setup in the applicom configurator. [3]:Maximum quantity in write is always 1 if you are using PCDDE application. / page 6/11 applicom, open industrial communication concept 112

7 SRTP Messaging - Client mode performance The applicom interface must provide feedback variables coming from 10 stations (Omron CS series) with a cycle time of 30ms. No inter-plc exchange is active. Amount of data per station 3 tables of 765 words 1 table of bits applicom Data-Base retrieval time (out of application and scada) to get data from 10 stations, i.e words and bits, 40 requests are necessary: with 1 simultaneous request by station 40 (requests) / 150 (requests /s) = 0,267 second with 2 simultaneous requests by station 40 (requests) / 260 (requests /s) = 0,153 second / page 7/11 applicom, open industrial communication concept 113

8 Server Mode The FINS server on applicom interface provides, for client CS PLCs using Omron network architecture, a database of 32K Words and 32K Bits. With no prior configuration, the FINS clients have direct access to the applicom database by targeting the port number 9600 (UDP port) of the applicom station. The access mode is identical to that of an OMRON PLC. This data base, called applicom Data-Base, could be access in Read and Write modes. applicom Data-Base management for PLC clients Supported FINS operations Type of data in applicom Data-Base Name Code Zone Type of data Max. number Memory area read 0101h 00h bit area h bit area h word area h word area 765 Memory area write 0102h 80h bit area h word area h word area 763 / page 8/11 applicom, open industrial communication concept 114

9 The Omron server functionality on the applicom database can be used to optimize information feedback. Rather than permanently polling the equipments to monitor variables which change status occasionally, the equipments can store the information to be feed back in the applicom database only on status changes (alarm feedback). This operating mode results in: " PLC processors less solicited. " Network architecture less heavily loaded. " Minimized information feedback time. This principle can be made reliable by using a monitoring mechanism of PLC client connections : " You can define in the configurator a global maximum time between the accesses of the client equipment to the applicom Omron server. After this interval, the absence is indicated to the application by an "ACCESS STATUS WORD" in the applicom Data- Base. " Your application can read (or write to reset) a counter word which is located in the applicom Data-Base words area "ACCESS INDICATOR WORD" to inform about the current number of writes made by the client device in the applicom Data-Base. / page 9/11 applicom, open industrial communication concept 115

10 Diagnostics The applicom package includes, free of charge, a set of diagnostic tools to test your communication without developing any kind of application. Those tools are an essential help to valid the good running of your industrial communication. You can use them in the same time than your applications. They are sorted in two categories: Diagnostic tools for network analysis Depending of the protocol used, thus on the transport type, these tools are specialised in the network analysis. They inform you about the traffic and this in real time (load rate, emitted requests number, flow / seconds...). Two modes are available : normal or advanced. The screen is displayed through a graphic tree representation. The object symbols inform on equipment current state (connected, active, error, not configured...). / page 10/11 applicom, open industrial communication concept 116

11 Data access utilities These utilities enable you to access in read and write modes to PLC data's and to applicom Data-Base. Each access returns a status word and a text comment giving feedback result. You can used,constently, the applicom diagnostic tools.these tools cohabit with your applications compatible applicom board ISA Bus PCI Bus PC/104 Bus PCI2000ETH / page 11/11 applicom, open industrial communication concept 117