Communication Interface Units. CIU Prime & CIU Plus

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1 Communication Interface Units CIU Prime & CIU Plus

2 The Tank Gauging People COMMUNICATION INTERFACE UNITS Tank inventory information in liquid storage terminal and refinery automation is increasingly critical for operational and environmental reasons. The primary requirement is high reliability and uninterrupted availability of data. Enraf offers fast data access for environmentally conscious operation of liquid bulk storage sites. CIU Prime and CIU Plus (rack mounted) In the past it was quite normal to run all functions like data acquisition, data processing, alarmhandling and communication to third party systems via the same Tank Inventory Management System on one PC. All these functions, together with the demanding graphical display requirements, limited the speed and efficiency of information availability. The unique Enraf Three layer concept To create an open system and to improve the data availability and easy interfacing, the tasks have been separated into three layers including: The primary layer - CIU Prime The extensive real-time data scanning and acquisition tasks now runs in the CIU Prime. In this way time critical scanning can run smoothly without delay. Concurrent polling and parallel processing of the field data guarantees data throughput independent of the PC activities. The secondary layer - CIU Plus The complex and specialized real-time inventory calculations now run independently in the CIU Plus. This guarantees fast availability of inventory information. The top layer - Entis Pro Today s Tank gauging systems are required to provide a Windows NT based Graphic User Interface (GUI). Entis Pro creates clear and detailed graphical displays of tank inventory data. Kernel activities, like hard disk and network access and the increased number of graphical tasks, run smoothly. For detailed information see our Entis Pro brochure. Time synchronization is one of the many new features CIU Prime and CIU Plus features 19" Rack mounting Wall mounting Table top model Hinged cover for service Sealing facilities Configurable connections Full Year 2000 compliance Of course the CIUs are fully Year 2000 compliant. The internal hardware clock, used for time stamping all field data in the database, supports the full date and time format. Any PLC or DCS can synchronize date and time via either one of the host ports. Time synchronization Automatic and transparent time synchronization over the whole system (Entis Pro, CIU Plus & CIU Prime) is an important new feature. Rugged and reliable The use of dedicated hardware, without cooling fans and spinning hard disks, assures a reliable operation. Continuous recalculation of all inventory data and flow rates in synchronous data sets on a per tank basis prevents potentially misleading and out of phase data presentation.

3 From FIELD DATA to MANAGEMENT INFORMATION Management information All data from plant control for management Plant control All data from Entis Pro Inventory Management System All data from CIU Plus Inventory presentation and reporting Alarm handling Trending and logging Hot standby management Calculated Data All data from CIU Prime Volume calculations Mass calculations Flow rate CIU Plus Host protocol Open connectivity ODBC/5QL Enraf 45 E host protocol OLE automation Up to 4 host ports SCADA PLC MODBUS DCS Entis Pro 2 Field ports CIU Prime (Full redundancy) Collected Field Data Level Temperature Pressure Observed/dipped density Alarm status Interface/water level(s) Vapor temperature Vapor pressure Gauge status Field Data from SmartRadar Level Gauges Advanced Servo Tank Gauges HTG HIMS CIU Prime Communication guarding Watchdog Host reset relays (CIU Plus) Service Configuration Gauge commands 2 Host ports PLC DCS CIU Plus MODBUS Up to 50 field instruments inputs EN Fieldbus RS232C / RS485 CIU (series 858) Converted Microlect Information Level Available data Communication Protocol

4 The Tank Gauging People CIU Prime The CIU Prime is the interface between the field instruments (tank gauging instruments) and the control room. Up to 50 tanks can be connected to a single CIU Prime. Main task The new CIU Prime offers the ideal tank scanning and data acquisition unit for all tanks in both storage terminals and refineries. All measured field data from the connected gauges will be scanned continuously. For this task, the CIU Prime can be equipped with a maximum of four Field ports. Each of these boards has its own processor and interface to field wiring. Parallel operation of these processors allows concurrent scanning to achieve a very high update rate of the field database. All scanned data is stored in a local real-time database for access by higher level computerized systems. Separate boards are available for interfacing to various physical layers. Interface (in) Boards are available for connecting directly to the Enraf tank gauge range via the Enraf Fieldbus: serial ASCII coded, Bi-Phase Mark modulated (BPM). Interfacing for third party tank gauging systems will become available in the future. PLC connectivity The PLC interfacing capabilities makes the CIU Prime ideal for very high reliability in alarm processing. In older tank gauging systems, all alarm processing was done at one of the higher system levels, with a lower inherent reliability. It is now possible to link hardware alarms directly to the unit scanning all tank data. Any PLC can retrieve all primary measured data via MODBUS and compare them with own set points to generate alarms on pre-programmed conditions. Independent alarm functionality has finally become reality Nerefco Connectivity with existing Enraf inventory systems An RS-232C / RS-485 input board and CIU emulation allows connectivity to existing Entis + and Microlect tank inventory systems Interface (out) The CIU Prime offers two completely independent Host Ports for connectivity to Programmable Logic Controllers (PLCs), Distributed Control Systems (DCS) or Enraf s CIU Plus. The communication is standardized on MODBUS with a fully memory mapped configuration. Connectivity Connectivity is a prime requirement for any new tank gauging system. The use of the worldwide known MODBUS standard for communication guarantees compatibility with your system. Dual host connections allow a simultaneous connection for local or remote service via a modem. Support of programmable modem initialization strings even allows for automatic dial-in and connect at start-up.

5 The Primary Layer Intelligent Management System Entis Pro Enraf offers a quantum leap forward with the CIU Prime, CIU Plus and Windows NT based Entis Pro. This is a totally new concept based on the field proven Enraf CIU (858 series) and developed with more than 50 years experience in Tank Gauging. The CIU Prime is ideal for interfacing to any PLC, DCS or SCADA system Supervisory Control And Data Acquisition (SCADA) Distributed Control and Supervision (DCS) CIU Plus Programmable Logic Controller (PLC) CIU Prime

6 The Tank Gauging People CIU Plus The CIU Plus is a standalone inventory calculation unit, for use in combination with the CIU Prime. Tank inventory of up to 50 tanks can be monitored by a single CIU Plus. Main task The main task includes inventory calculation of volumes (TOV, GOV, GSV, NSV), flow rate and mass (both total mass and vapor mass if applicable) using the appropriate formulas according to the international standards of API and ASTM. Any Distributed Control System (DCS )or Supervisory Control And Data Acquisition (SCADA) system can interface to a CIU Plus and retrieve all inventory data of all 50 tanks. Host communication is fully standardized on MODBUS with a memory mapped configuration per port. Full redundancy Hot standby & Redundancy Both CIU Prime and CIU Plus are completely prepared for hot standby & redundant operation. In a redundant configuration, secondary communication links or even hot standby CIUs optimize availability and routing of tank inventory data. Redundancy can be constructed at any or all of the CIU levels.

7 The Secondary Layer Interface (in) The CIU Plus has standard two Field ports for interfacing to one or more CIU Primes. The serial link between the CIU Plus and the CIU Prime can consist of a simple null-modem connection, but can also make use of line-drivers, long haul or dial-in, or even fiber optic modems. This flexibility makes it possible to install CIU Plus and CIU Prime at separate locations, which is ideal for connecting to off-site tanks or pump control rooms. Interface (out) The CIU Plus can be equipped with a maximum of four RS-232C / RS-485 output boards. Each of these boards has its own processor and offers truly independent host communication. Parallel processing of these processors allows high Baud-rates of up to 38k4 baud. Connectivity Enraf has given extra attention to provide a high level of connectivity to the CIU Plus. The unit is equipped with up to four host connections allowing simultaneous connection to PLC, DCS or SCADA systems. Also, remote service communication via a modem allows configuration and diagnostic support. Programmable modem initialization strings allow automatic dial-in and connect capability. The use of the worldwide known MODBUS standard for communication guarantees compatibility with your system. The CIU Plus is ideal for interfacing to any PLC, DCS or SCADA system Designed for the future The new CIU Plus offers the ideal tank calculation unit both for terminals and refineries. Connected to a CIU Prime, it offers the superior solution for all modern tank inventory applications. Safeguarding the host link An external watchdog capability is available via relays (per host port) that are activated when a host link failure is detected by the CIU Plus. Easy configuration with Ensite Pro Ensite Pro Configuration of the CIU Plus is simple and straightforward with the Ensite Pro program. Ensite Pro is a Windows based service utility, which can be used for local or remote configuration and diagnostics of CIUs and all connected gauges.

8 Enraf B.V. Röntgenweg 1, 2624 BD Delft, The Netherlands P.O. Box 812, 2600 AV Delft, The Netherlands Tel.: +31 (0) , Fax: +31 (0) China: Enraf B.V. (Shanghai Rep. Office) # 18-01, Suncome Liauw's Plaza, 738 Shangchen Road, Pudong, Shanghai Tel.: , Fax: France: ENRAF S.a.r.l. ZAC Les Beaudottes, 15 rue Paul Langevin, SEVRAN Tel.: +33 (0) , Fax: +33 (0) Germany: Enraf GmbH Obere Dammstrasse 10, Solingen Postfach , Solingen Tel.: +49 (0) , Fax: +49 (0) Singapore: Enraf B.V. (Singapore Rep. Office) Lam Soon Industrial Building 63 Hillview Avenue, # 05-03, Singapore Tel.: , Fax: United Kingdom: Enraf Ltd. Unit 11, Sandridge Park, Porters Wood St. Albans, Herts AL3 6PH Tel.: +44 (0) , Fax: +44 (0) USA: ENRAF Inc. 500 Century Plaza Drive, Suite 120 Houston, Texas Tel.: , Fax: Russia: Enraf B.V. (Moscow Rep. Office) c/o Nucletron - Oldelft 2nd Donskoy Proezd, Building 6/ Moscow Tel.: Fax: vw-us v1 The Tank Gauging People vw-in v1