Ovation Ethernet Link Controller Module Features: Provides native Ethernet connectivity capability at the I/O level Enables faster, more efficient integration of robust data from third-party devices Dedicated processor increases the number and type of supported devices Easily add new communication protocols without a full system upgrade Simplifies link configuration Provides full communication redundancy Offers hot-swapping capability to streamline maintenance activities Provides bidirectional data throughput CE Mark certified Offers an extra measure of information isolation and security RS232 serial interface for third-party devices Ethernet Link Controller Module Emerson Process Management Power & Water Solution s Ovation Ethernet Link Controller (ELC) is a flexible, redundant I/O module that offers I/O-level Ethernet interface capability that is tightly coupled with the Ovation control system. This translates into a number of benefits for power, wastewater, and water utilities that utilize Ovation technology. The expanded capabilities of the Ovation ELC give plant operators additional insight for making better informed decisions to optimize plant availability, efficiency, and reliability. The dedicated ARM processor on the module significantly expands the number and types of third-party devices and systems that can be supported by an Ovation Controller, as well as the increasingly sophisticated data they provide. The module, which offloads all communications protocol processing previously handled by the controller, also offers faster access to the data from these devices and more efficiently integrates the information into the Ovation system. The ELC uses a standard Ovation I/O base and utilizes the built-in bus communications to the Ovation Controller. An RJ45 port interfaces the module to the third-party device or system. The Ovation Controller directly reads the module s memory area allowing transferred data from a third-party device to be included in the Ovation system database. With the module, data exchanged with other devices can be easily applied to Ovation control schemes and displayed in graphics. The ELC includes diagnostics to detect adverse conditions. The state of the module can be determined by reading the diagnostic LEDs Emerson Process Management Power & Water Solutions, Inc. - 1 -
located on the front, or at any Ovation Workstation connected to the system. The ELC can send point information to the Ovation Controller using either the network or the backplane bus. Configuration Standard Ovation Developer Studio engineering tools are used to configure the ELC. The base software that contains the specific infrastructure for the configuration of the ELC is loaded into the Ovation system with an application protocol package that includes configuration details for the specific communication protocol being applied. The ELC base software and application protocol packages are independent from the Ovation version, and new communications protocols can be added at any time without having to upgrade the Ovation system. The tool s plug-in environment provides significantly easier and faster link configuration. Redundancy The ELC supports module as well as port redundancy. Module redundancy is configured with the Ovation Developer Studio and allows one ELC to perform as the primary module, while a second module is the backup. Whenever failure of the primary module is detected, the backup module assumes control. Port redundancy is configured at the line level within the protocol configuration tool. A primary port and an optional backup port may be defined. If the primary port fails, communication can proceed through the backup port. Ethernet Link Controller Protocols Application protocol packages can be loaded onto the ELC, extending the Ovation system beyond traditional plant boundaries. The protocol can be easily deployed on diverse Ovation platforms in either the ELC itself or, for example, the Ovation Supervisory Control and Data Acquisition (SCADA) server, which supports a wide range of protocols and physical communications layers, including dial-up, leased lines and wireless. The local processing power and memory of the ELC make it ideal for protocol handling applications including interfacing with various systems such as: Turbine supervisory vibration Certified burner management PLC, safety, electrical, SCADA Chemical analyzer Process analyzer Substation IEDs Support is provided for some individual standards as defined in the protocol s conformance documents for basic functions including reading and writing data structures, status, time, diagnostics, registers, bits, or blocks of registers. Also included is support for client/server, publisher/subscriber, master/slave, poll/response, report by exception, as well as other mechanisms as required by the protocols. Standard application protocol packages that are available for the ELC include: IEC 61850 MMS Protocol Client Modbus/TCP Master/Slave DNP3 Server/Client both IEC 60870-5-101 Client and Server via Serial (supports both balanced and unbalanced communications) IEC 60870-5-104 Client and Server via Ethernet (supports both balanced & unbalanced communication) GE GSM Client (GE Mark V- VI-VIe turbine control systems) Turbine Control Interface Client Protocol Allen Bradley DF1 Client Protocol Allen Bradley EIP protocol (PCCC and Native line both) Allen Bradley CSP Client protocol Sequence of Events Millisecond time stamps can be a useful feature when an event/alarm happens quickly or in a chain reaction. The time stamp is crucial in determining what happened first in a sequence of events (SOE). The ELC can generate SOE points that are time stamped by the ELC if the protocol used supports time stamping (such as DNP3). The millisecond time stamp provided by Emerson Process Management Power & Water Solutions, Inc. - 2 -
the ELC module can be used for SOE and alarm purposes. Ethernet Link Controller Communication Media Two types of media can be used for ELC Communication TCP Ethernet Port Digi Terminal Server Port The TCP Ethernet port type is used to communicate directly with devices using one of the many Ethernet protocols that are supported by the ELC. In this case, the ELC would communicate with the third-party device using one of the Ethernet protocols that are supported by the ELC, and the third-party device would communicate with the end device using RS- 232/422/485. The third-party device would handle the translation of the protocol between Ethernet and Serial. The Digi Terminal Server port type can be used when the ELC needs to communicate with a device using RS-232/422/485. Ethernet Link Controller Communication Lines There are two basic types of communications lines: Master line (also called the Client or Controlling line) Slave line (also called the Server or Controlled line) Physical Interfaces Two types of physical interfaces are available to communicate with third-party devices. RJ45 Port: TCP/IP Interface RS232 Terminals: Serial Interface Cybersecurity The ELC also has important cybersecurity implications for users. The North American Electric Reliability Corporation s (NERC) Standards CIP-002 through CIP-009 provide a cybersecurity framework for the identification and protection of Critical Cyber Assets to support reliable operation of the Bulk Electric System. As part of complying with these standards, power generators need to define their security perimeter. The Ovation Controller communicates with the ELC over the Ovation I/O bus using a nonroutable protocol. By using the Ovation I/O bus, the security perimeter stops at the module and does not extend to remote devices, thereby providing an extra measure of information isolation and security for power generators. For applications that require large data throughput, the option exists to use Ethernet to allow communications between the Ovation Controller and the ELC using routable protocols. A master line initiates communication with slave RTU. In this scenario, the ELC is configured to be the master and its RTUs are the slaves. A slave line accepts requests from a master device. In this scenario, a device is configured to be the master and thus initiates requests to the slave ELC module. Emerson Process Management Power & Water Solutions, Inc. - 3 -
The following table includes module-specific specifications. Additionally, as part of Ovation, the module adheres to the common industry standards used by the overall system. Item General Module Specification Description ARM9 processor 32Mb RAM 32Mb flash VxWorks V6.x S/W Environment Applications Ports One RJ45 100BaseT Ethernet ports, RS232 port Protocol Specific Specific protocol implementation packages are available. Time and SOE synchronization capability at Ethernet Link Controller Performance Dependent on protocol package, data quantity, and OEM system capability Redundancy Redundancy support using two modules Capacity Maximum 25 RTU/third-party devices can communicate with Single ELC on TCP/IP Ethernet. Points per ELC module are dependent on link design. Capacity for the Ethernet communication between the Ovation controller and ELC is up to 20000 points when using Ethernet between them. Each ELC to controller interface can supports up to 2048 points when using the Local I/O bus. Controller Support Each controller supports up to 18 Ovation bus or ELC modules in total, in any combination within its I/O systems. If these are all ELC modules, this would represent a total of 18 Ethernet ports. The use of any other bus or ELC modules would decrease these quantities proportionately. System Support Ovation local I/O system Ovation remote I/O system (Future Implementation) ELC configuration capability Time synchronization capability with SOE with GPS derived NTP time distribution Power 70mA typ, 85mA max @ 24VDC Diagnostics Microcontroller 168 milliseconds Watchdog timer I/O bus Watchdog 1.6 seconds nominal. 1.1 sec min, 2.1 sec max. Timer LED - P (green) Power OK LED - C (green) Module to Controller Communications OK LED - E (red) External Fault LED - I None LED - ACT (green) Ethernet activity LED - FDX (yellow) Full Duplex Ethernet communications Electromagnetic Capability General Note ELC is CE Mark compliant according to the test data provided in the following table and when housed in an Ovation CE Mark cabinet EN55011 Meets the requirements of the Competent Body for CE Mark approval EN61000-4-2 EN61000-4-3 Meets the requirements of the Competent Body for CE Mark approval Criteria A EN61000-4-4 Emerson Process Management Power & Water Solutions, Inc. - 4 -
Item EN61000-4-5 EN61000-4-6 ANSI C37.90-11989, SWC Safety EN 61010-1 Specification Description Meets the requirements of the Competent Body for CE Mark approval Criteria A Meets the specification Meets the requirements of the Competent Body for CE Mark approval Environmental Temperature 0ºC - 60ºC Storage -40ºC - 85ºC Humidity 0% to 95% RH, NC, max wet bulb 35ºC Vibration IEC 68-2-6 0.15mm displacement from 10 to 57 Hz and 2G s from 57 to 500 Hz when attached to a properly mounted DIN rail Shock IEC 68-2-27 15G s for 11mS and ½ sine wave Altitude (above sea level) Power Supply- Primary & Secondary Operational 300m to 3,000m Storage: 300m to 12,000m Nominal 24V, Range 21 to 25V DC. for both Primary & Secondary auctioneered on board module Application Notes Protocol Package Example The IEC (International Electrotechnical Commission) 61850 protocol package has emerged as a global standard for Substation Automation (SA). Integrating data from electrical devices used in generators, switchgear, transmission lines, transformers and substations drives more-informed decision making throughout the organization. A typical IEC 61850 protocol architecture is shown in Figure 1. This example depicts an electrical substation system using a number of Intelligent Electrical Devices (IED) for protection and control that are connected together on an Ethernet-based Station Bus. The main protocols for processed data transfer used within this example are: MMS for vertical communications with a host system such as an Ovation system GOOSE for inter IED communications SMV for sharing process data on another Ethernet-based Process Bus network The ELC provides a physical connection point on the host Ovation control system. The IEC 61850 protocol application package provides bidirectional communication by converting the MMS data into Ovation data, and communicating Ovation commands and status back to the third-party device. Figure 1 - Typical IEC 61850 Structure Emerson Process Management Power & Water Solutions, Inc. - 5 -