Schweitzer Engineering Laboratories SEL-2711 Instruction Manual
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Schweitzer Engineering Laboratories SEL-2711 Instruction Manual

Schweitzer Engineering Laboratories SEL-2711 Instruction Manual

Modbus plus adapter card
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SEL-2711
MODBUS PLUS ADAPTER CARD
INSTRUCTION MANUAL
SCHWEITZER ENGINEERING LABORATORIES
2350 NE HOPKINS COURT
PULLMAN, WA USA 99163-5603
TEL: (509) 332-1890
FAX: (509) 332-7990

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  • Page 1 SEL-2711 MODBUS PLUS ADAPTER CARD INSTRUCTION MANUAL SCHWEITZER ENGINEERING LABORATORIES 2350 NE HOPKINS COURT PULLMAN, WA USA 99163-5603 TEL: (509) 332-1890 FAX: (509) 332-7990...
  • Page 2 All brand or product names appearing in this document are the trademark or registered trademark of their respective holders. Schweitzer Engineering Laboratories, Inc., , SEL , Connectorized, and Job Done are registered trademarks of Schweitzer Engineering OGIC Laboratories.
  • Page 3 Section 4, Target Type - updated information 980601 Section 4 - Added Summary Card 980420 All Sections updated to describe new features in firmware release SEL-2711-R102 971218 Appendix A - Correction Date Code 20010105 Manual Change Information SEL-2711 Instruction Manual...
  • Page 5 SEL-2711 INSTRUCTION MANUAL TABLE OF CONTENTS SECTION 1: INTRODUCTION SECTION 2: GENERAL DESCRIPTION SECTION 3: OPERATION AND NETWORK CONFIGURATION SECTION 4: OPERATION WITHIN SEL-2030 APPENDICES Appendix A: Firmware Versions in this Manual Appendix B: Error Codes and Messages Appendix C: Modbus Plus Message Example...
  • Page 7 TABLE OF CONTENTS SECTION 1: INTRODUCTION ..............1-1 References..........................1-1 Manual Overview ........................1-1 Background Information....................1-1 Section Highlights......................1-2 Conventions..........................1-2 Acronyms, Abbreviations, and Definitions ................1-2 Date Code 980420 Introduction SEL-2711 Instruction Manual...
  • Page 9 VERVIEW Background Information This manual is designed to help you make the most effective use of the SEL-2711 Modbus Plus Communications Adapter. Each section begins with a detailed table of contents followed by a short paragraph summarizing the main areas of the section. For more information on the SEL-2030 or Modbus Plus networks, please see the references listed above.
  • Page 10 • Appendix A: Firmware Versions, lists the firmware versions this manual applies to. • Appendix B: Error Codes and Messages, lists the error codes and messages the SEL-2711 generates along with a description of why they might occur. • Appendix C: Modbus Plus Message Example, illustrates how Modbus Plus application messages are constructed.

  • Page 11: Table Of Contents

    Modbus Data Access Commands ..................2-4 Modbus Data Addressing ....................2-5 Product Overview........................2-5 TABLES Table 2.1: Modbus Data Access Commands ..................2-5 FIGURES Figure 2.1: Application Overview .......................2-1 Figure 2.2: Message Frame Routing Path....................2-2 Figure 2.3: SEL-2711 Block Diagram....................2-6 Date Code 980420 General Description SEL-2711 Instruction Manual...

  • Page 13: Section 2: General Description

    SECTION 2: GENERAL DESCRIPTION This section provides overviews of Modbus Plus networks and of the SEL-2711 Modbus Plus Adapter functionality. ETWORK VERVIEW This subsection provides an overview of Modbus Plus. See Modbus Plus Network Planning and Installation Guide for a more complete description of Modbus Plus networks.

  • Page 14: Modbus Plus Message Routing

    (range: 1 ... 64). For example, the path 5.0.0.0.0 specifies a controller node at address 5 on the local network (the network to which the host is attached). General Description Date Code 980420 SEL-2711 Instruction Manual...

  • Page 15: Paths To Network Adapters

    Data Slave (DS) Path This type of path is opened for data reads and writes as they are received by the device. Date Code 980420 General Description SEL-2711 Instruction Manual...

  • Page 16: Path Quantities

    Modbus Plus frames. These commands are recognized by con- trollers for reading and writing coils and registers and for reporting status. The following Modbus commands are used: General Description Date Code 980420 SEL-2711 Instruction Manual...

  • Page 17: Modbus Data Addressing

    The SEL-2711 can be configured to send user-configurable Modbus Plus global data. The SEL-2711 captures all Modbus Plus global data from the network and stores it to a data region so it is available to the host system. The SEL-2711 accepts control operations; the host system...

  • Page 18: Figure 2.3: Sel-2711 Block Diagram

    Figure 2.3 shows a block diagram of the SEL-2711. To communicate with the host system, the SEL-2711 talks to a block of shared memory that is resident on the host system. The SEL-2711 can then operate on the data using its local CPU and memory. The Modbus Plus Peer Processor controls the Modbus Plus network operations.

  • Page 19: Table Of Contents

    SECTION 3: OPERATION AND NETWORK CONFIGURATION..... 3-1 Introduction..........................3-1 Data Access ..........................3-1 LED Usage..........................3-2 Self-Tests ..........................3-3 Device Configuration........................3-3 Network Configuration ......................3-4 TABLES Table 3.1: SEL-2711 Settings......................3-3 FIGURES Figure 3.1: SEL-2711 Panel with Label ....................3-4 Date Code 980420 Operation and Network Configuration SEL-2711 Instruction Manual...

  • Page 21: Section 3: Operation And Network Configuration

    The state of coils can be read from the SEL-2711 using the Modbus Read Coil function code (1). Using this function code, up to 2000 coils can be read at once. Coil addresses start at address 1 (0x reference).

  • Page 22: Led Usage

    LED U SAGE The SEL-2711 has three LEDs which are visible from the rear of the host device, as shown in Figure 3.1. There is a red LED associated with each connector (A and B) to indicate which cable segment has a fault. If a red LED blinks momentarily, it indicates that a message error was detected on that cable path.

  • Page 23: Self-Tests

    See Appendix B: Error Codes and Messages for details on the possible error conditions. EVICE ONFIGURATION Associated with the SEL-2711 are a number of configuration parameters. These are listed in the following table. See Section 4: Operation Within SEL-2030 for information on how to access these settings using the SEL-2030.

  • Page 24: Network Configuration

    ETWORK ONFIGURATION The SEL-2711 has two connectors which are accessible from the rear of the host device, as shown in Figure 3.1. The connectors provide for redundant Modbus Plus connections and are referred to as ports A and B. See Modbus Plus Network Planning and Installation Guide for more information on using redundant connections in a Modbus Plus network.
  • Page 25 TABLE OF CONTENTS SECTION 4: OPERATION WITHIN SEL-2030 ......... 4-1 Introduction..........................4-1 Installation ..........................4-1 Firmware Upgrades ........................4-2 SEL-2711/SEL-2030 Firmware Upgrade Instructions............4-2 Configuring SEL-2711 ......................4-3 Initial Checkout ........................4-4 Routing Paths ...........................4-5 Status Access ...........................4-5 Configuring Relay Ports ......................4-5 Configuring SEL-2711 Port....................4-12 Coil Data Mapping.........................4-16 Input Register Data Mapping....................4-20...
  • Page 26 Table 4.12: Relay Event Data Holding Register Map .................4-28 Table 4.13: Relay History Data Holding Register Map ..............4-29 Table 4.14: Relay History Record Holding Register Map..............4-30 Table 4.15: D1 Region Map ......................4-44 Operation Within SEL-2030 Date Code 20010105 SEL-2711 Instruction Manual...

  • Page 27: Section 4: Operation Within Sel-2030

    SEL-2711 and SEL-2030. NSTALLATION If you receive an SEL-2711 separate from the SEL-2030, you will need to install it. To install the SEL-2030, perform the following steps. This procedure requires that you handle components sensitive to CAUTION Electrostatic Discharge (ESD).

  • Page 28: Firmware Upgrades

    The programs (firmware) that run in the SEL-2711 are stored in Flash memory. New programs can be stored to the SEL-2711 via a file transfer to the SEL-2030. To load the new version of the SEL-2711, follow the instructions below. The SEL-2711 and SEL-2030 each have two programs that may need to be upgraded: the regular, or “executable”...

  • Page 29: Configuring Sel-2711

    There are a number of settings associated with the SEL-2711. To access these settings, use the SET P 17 or SET P 18 command in the SEL-2030. (The SEL-2711 is installed as Port 17 or 18 in the SEL-2030; examine the rear panel or use the STATUS command to determine which slot it is in.) The following screen capture shows what the setting process looks like:...

  • Page 30: Initial Checkout

    NITIAL HECKOUT The first thing you will want to check after installing the SEL-2711 is that it is properly detected by the SEL-2030 and that is reporting no self-test failures. Use the WHO command to confirm that the SEL-2711 is properly detected as Port 17 or 18. Use the STATUS command to confirm that no self-test errors are reported.

  • Page 31: Routing Paths

    SEL-2711, the last non-zero digit in your routing path must specify an application task number. This is also referred to as a Data Slave path number. The SEL-2711 supports 8 Data Slave paths, so the last non-zero digit in the routing path must be in the range 1-8. For example, if your SEL-2711 has a Modbus Plus node address of 12, then other Modbus Plus nodes on the same network should use a routing path such as 12.1.0.0.0.
  • Page 32 Item 1 message MESG1 = "" ? 20METER<ENTER> 20METER<ENTER> Item 2 trigger D2 ISSUE2 = NA ? P00:00:01<ENTER> P00:00:01<ENTER> Item 2 message MESG2 = "" ? 20TARGET<ENTER> 20TARGET<ENTER> (continued on next page) Operation Within SEL-2030 Date Code 980420 SEL-2711 Instruction Manual...
  • Page 33 Y<ENTER> Port 2 Settings Changed **>> SEL-2030 User Region data can also be read using the SEL-2711. Use SET M on the appropriate port to configure this data. ® Port remote bits can be set and cleared via Modbus Plus. Set SEL...
  • Page 34 Running Active None Once the status has been confirmed, the SEL-2711 address must be set, and the three relay ports must be configured to capture the data of interest. The following screens illustrate this process. *>>SET P 18<ENTER> SET P 18<ENTER>...
  • Page 35 A 20STATUS A 20BREAKER A 20EVENT A 20EVENTS Port Identification String PORTID ="251-3 TEST RELAY (NEGATIVE SEQUENCE)" ? END<ENTER> END<ENTER> PORT:1 DEVICE = S CONFIG = Y (continued on next page) Date Code 980420 Operation Within SEL-2030 SEL-2711 Instruction Manual...
  • Page 36 ISSUE4 = NA ? P00:02<ENTER> P00:02<ENTER> Item 4 message MESG4 = "" ? 20HISTORY<ENTER> 20HISTORY<ENTER> Size of user-defined data space in registers USER ? <ENTER> <ENTER> (continued on next page) 4-10 Operation Within SEL-2030 Date Code 980420 SEL-2711 Instruction Manual...
  • Page 37 FID=SEL-321-1-R413-V656112pb-D960731 DEVICE ID: EXAMPLE: BUS B, BREAKER 3 BAUD RATE: 2400 OPERATE SUPPORT: Binary (1 Breakers, 16 Remote Bits S-C) LEVEL 1 PASSWORD: OTTER COMMANDS SUPPORTED: (continued on next page) Date Code 980420 Operation Within SEL-2030 4-11 SEL-2711 Instruction Manual...

  • Page 38: Configuring Sel-2711 Port

    Global data from other nodes on the network are automatically placed in region D1 on the SEL-2711 port. The first 32 registers are the global data from node 1, the next 32 are from 2,… 4-12...
  • Page 39 8000h (-32768). The sixteen breaker bits on the SEL-2711 port can be used for issuing control commands to other nodes on the network. To enable this, for every control point you wish to use, you must assign a destination routing address and coil number using the SET P command.
  • Page 40 Port 18 Settings Changed *>> The SEL-2711 will now automatically send this data to all the other nodes on the network. Global data from the other nodes on the network is available in region D1. Simply VIEW this data to see what is coming from the other nodes.
  • Page 41 PATH_14 = "00.00.00.00.00" COIL_14 = 1 PATH_15 = "00.00.00.00.00" COIL_15 = 1 PATH_16 = "00.00.00.00.00" COIL_16 = 1 Save changes (Y/N) ? Y<ENTER> Y<ENTER> Settings accepted. *>> (continued on next page) Date Code 980420 Operation Within SEL-2030 4-15 SEL-2711 Instruction Manual...

  • Page 42: Coil Data Mapping

    CRB bit to be pulsed. These bits can be used within the SEL-2030 for whatever control purpose you desire. When reading control points, the SEL-2711 responds with the state corresponding to the most recent Modbus Plus operation; it does not necessarily correspond to the state of the remote bit within the SEL-2030 because it may be modified by other operations.
  • Page 43 3:RB3 6:RB7 3:RB2 6:RB6 3:RB1 6:RB5 4:RB16 6:RB4 4:RB15 6:RB3 4:RB14 6:RB2 4:RB13 6:RB1 4:RB12 7:RB16 4:RB11 7:RB15 4:RB10 7:RB14 4:RB9 7:RB13 4:RB8 7:RB12 4:RB7 7:RB11 4:RB6 7:RB10 4:RB5 7:RB9 Date Code 980420 Operation Within SEL-2030 4-17 SEL-2711 Instruction Manual...
  • Page 44 9:RB11 12:RB15 9:RB10 12:RB14 9:RB9 12:RB13 9:RB8 12:RB12 9:RB7 12:RB11 9:RB6 12:RB10 9:RB5 12:RB9 9:RB4 12:RB8 9:RB3 12:RB7 9:RB2 12:RB6 9:RB1 12:RB5 10:RB16 12:RB4 10:RB15 12:RB3 10:RB14 12:RB2 10:RB13 12:RB1 4-18 Operation Within SEL-2030 Date Code 980420 SEL-2711 Instruction Manual...
  • Page 45 14:RB3 17:RB7 14:RB2 17:RB6 14:RB1 17:RB5 15:RB16 17:RB4 15:RB15 17:RB3 15:RB14 17:RB2 15:RB13 17:RB1 15:RB12 18:RB16 15:RB11 18:RB15 15:RB10 18:RB14 15:RB9 18:RB13 15:RB8 18:RB12 15:RB7 18:RB11 15:RB6 18:RB10 15:RB5 18:RB9 Date Code 980420 Operation Within SEL-2030 4-19 SEL-2711 Instruction Manual...

  • Page 46: Input Register Data Mapping

    There is also a set of 16 coils corresponding to the 16 control commands the SEL-2711 can issue. These are based on the 16 breaker bits (BRx bits) on the port in which the SEL-2711 card is installed (17 or 18). These coils can only be read, not operated. They indicate the status of the last issued operation.

  • Page 47: Holding Register Data Mapping

    4x references) are broken into 500 register blocks with data from each port in an appropriate block. The second segment consists of 36,864 registers which correspond to the User Regions of all 18 ports. Date Code 980420 Operation Within SEL-2030 4-21 SEL-2711 Instruction Manual...
  • Page 48 SEL-2030, and the final 500 registers correspond to the first 500 registers in the User Region of the port in which the SEL-2711 is installed (Port 17 or 18). Table 4.4 shows the mapping of this first segment. To determine a 4x reference from this table, add 40000 to the given offset address.
  • Page 49 Port 14 User Region 38,673 - 40,720 Port 15 User Region 40,721 - 42,768 Port 16 User Region 42,769 - 44,816 Port 17 User Region 44,817 - 46,864 Port 18 User Region Date Code 980420 Operation Within SEL-2030 4-23 SEL-2711 Instruction Manual...

  • Page 50: Relay Type

    3. The fifth digit is the dash number, or zero if there is no dash number. For example, the SEL-587 is encoded as 58700, the SEL-251-3 is encoded as 25103, and the SEL-221G-6 is encoded as 22166. 4-24 Operation Within SEL-2030 Date Code 980420 SEL-2711 Instruction Manual...

  • Page 51: Meter Data

    VBC or VBC1 in kV/10; V4 or VBY in secondary V/100; or IBCY or IBC2 in amps VCA or VCA1 in kV/10; V6 or VCY in secondary V/100; or ICAY or ICA2 in amps Date Code 980420 Operation Within SEL-2030 4-25 SEL-2711 Instruction Manual...

  • Page 52: Demand Meter Data

    Peak IB in amps Peak IC in amps Peak IR in amps Peak P, whole part in MW Peak P, fractional part in MW/10000 Peak Q, whole part in MVAR 4-26 Operation Within SEL-2030 Date Code 980420 SEL-2711 Instruction Manual...

  • Page 53: Date/Time Stamp

    MSB first. Table 4.11: Relay Word Data Holding Register Map Relative Description Address First two bytes of target data, organized MSB first Second two bytes of target data, organized MSB first Date Code 980420 Operation Within SEL-2030 4-27 SEL-2711 Instruction Manual...

  • Page 54: Event Data

    Fault current - whole part in amps Fault current - fractional part in amps/10000 Duration - whole part in seconds; for 50 Hz relays, must multiply this value by 6/5 to get seconds 4-28 Operation Within SEL-2030 Date Code 980420 SEL-2711 Instruction Manual...

  • Page 55: History Data

    History Record 10 data - see Table 4.14 for detailed breakdown 460 - 479 History Record 11 data - see Table 4.14 for detailed breakdown 480 - 499 History Record 12 data - see Table 4.14 for detailed breakdown Date Code 980420 Operation Within SEL-2030 4-29 SEL-2711 Instruction Manual...
  • Page 56 6/5 to get seconds Duration - fractional part in seconds/10000 Fault current - whole part in amps Fault current - fractional part in amps/10000 IV Time in cycles/100 Energy in MJ/10 4-30 Operation Within SEL-2030 Date Code 980420 SEL-2711 Instruction Manual...

  • Page 57: Event Type

    ?CGT 7110 3ABG 3002 1003 2003 3ABGT 3102 1ABC 1001 2ABC 2001 3ABT 3103 1ABCT 1101 2ABCT 2101 3004 1ABG 1002 2ABG 2002 3AGT 3104 1ABGT 1102 2ABGT 2102 3006 Date Code 980420 Operation Within SEL-2030 4-31 SEL-2711 Instruction Manual...
  • Page 58 9027 4BCGT 4105 5CAG 5008 86TR Y 9028 4BCT 4106 5CAGT 5108 4007 5CAT 5109 4BGT 4107 5010 4009 5CGT 5110 ABCT 4CAG 4008 8003 4CAGT 4108 6ABC 8001 ABGT 4-32 Operation Within SEL-2030 Date Code 20010105 SEL-2711 Instruction Manual...
  • Page 59 CLS1 HBCGT 6105 RUN X 9009 CLS2 HBCT 6106 RUN Y 9010 CYCL 6007 SPC1 HBGT 6107 SPC2 6009 SPRI HCAG 6008 HCAGT 6108 START HCAT 6109 START X 9011 Date Code 20010105 Operation Within SEL-2030 4-33 SEL-2711 Instruction Manual...

  • Page 60: Target Type

    Certain relays record the front-panel target status at the time of each event. Relays of this type save the event target information as a separate field of every event record. The SEL-2711 includes these event targets as a part of Relay Data Holding Register Event and History records. The table below illustrates the possible event targets and bit associations.

  • Page 61: Example Relay Maps

    -0.9999-0.9999 MW Reactive power demand, whole part (Q) MVAR, primary -32767-32767 MVAR Reactive power demand, fractional part (Q) MVAR/10000, primary -0.9999-0.9999 MVAR Negative-sequence demand current (3I2) amps, primary 0-32767 A Date Code 20010105 Operation Within SEL-2030 4-35 SEL-2711 Instruction Manual...
  • Page 62 0 amps, primary 278-279 Unused - always 8000h event month months 1-12 event fault current, fractional part, always 0 amps, primary 498-499 Unused - always 8000h 4-36 Operation Within SEL-2030 Date Code 20010105 SEL-2711 Instruction Manual...

  • Page 63: Sel-287V

    0-59 event millisecond milliseconds 0-999 event type 268-272 Unused - always 8000h event targets 274-279 Unused - always 8000h event month months 1-12 event targets 494-499 Unused - always 8000h Date Code 20010105 Operation Within SEL-2030 4-37 SEL-2711 Instruction Manual...

  • Page 64: Sel-321-1 (Model 32111)

    0-59 event second seconds 0-59 event millisecond milliseconds 0-999 event type event fault location, whole part -32767-32767 event fault location, fractional part -0.9999-0.9999 270-271 Unused - always 8000h 4-38 Operation Within SEL-2030 Date Code 981030 SEL-2711 Instruction Manual...
  • Page 65 0-23 Minute of most recent event minutes 0-59 Second of most recent event seconds 0-59 Millisecond of most recent event milliseconds 0-999 217-219 Unused - always 8000h Event type Shot Date Code 981030 Operation Within SEL-2030 4-39 SEL-2711 Instruction Manual...
  • Page 66 Phase A, X side demand current (IAX) amps, primary 0-32767 A Phase B, X side demand current (IBX) amps, primary 0-32767 A Phase C, X side demand current (ICX) amps, primary 0-32767 A 4-40 Operation Within SEL-2030 Date Code 981030 SEL-2711 Instruction Manual...

  • Page 67: Sel-Bfr

    MW, primary -32767-32767 MW Power, fractional part (P) MW/10000, primary -0.9999-0.9999 MW Reactive power, whole part (Q) MVAR, primary -32767-32767 MVAR Reactive power, fractional part (Q) MVAR/10000, primary -0.9999-0.9999 MVAR Date Code 981030 Operation Within SEL-2030 4-41 SEL-2711 Instruction Manual...
  • Page 68 52A time cyc/100 0.00-327.67 cyc 272-277 Unused - always 8000h event IV time cyc/100 0.00-327.67 cyc event Energy MJ/10 0.0-3276.7 MJ event month months 1-12 event energy MJ/10 0.0-3276.7 MJ 4-42 Operation Within SEL-2030 Date Code 981030 SEL-2711 Instruction Manual...

  • Page 69: Outgoing Global Data

    The SEL-2030 can place user-configurable data on the network as Modbus Plus Global Data. The SEL-2711 treats the first 32 registers of its port’s User Region as the global data. This data can be configured using the SET M command within the SEL-2030. (See the SEL-2030 User’s Guide and SEL-2020/2030 Reference Manual for more information on using SET M to configure a User Region.) The SEL-2711 checks this data every ½...
  • Page 70 4-44 Operation Within SEL-2030 Date Code 981030 SEL-2711 Instruction Manual...
  • Page 71 SEL-2030/2711 D UMMARY Input Register Map Coil Map Holding Register Map if MAP_IR=Y Input Register Offset Coil Offset Address Corresponding Bits Address Corresponding Data 1 - 16 1:RB16 - 1:RB1 1 - 2048 Port 1 User Region 17 - 32 2:RB16 - 2:RB1 2049 - 4096 Port 2 User Region...
  • Page 72 Relay Data Holding Register Map Relay Type 10-30 P(whole) P(frac) Q(whole) Q(part) Dem IA Dem IB Dem IC Dem IR Dem P Dem P Dem Q Dem Q Dem 3I2 Dem 3I2Y Peak IA Peak IB Peak IC Peak IR Peak P Peak P Peak Q...
  • Page 73 Self-Test Failure Codes ......................B-1 Error Messages ........................B-2 APPENDIX C: MODBUS PLUS MESSAGE EXAMPLE ......C-1 TABLES Table B.1: SEL-2711 Software Errors ....................B-3 Table B.2: Peer Processor Internal Failures ..................B-3 Date Code 20010105 Firmware Versions SEL-2711 Instruction Manual...

  • Page 75: Appendix A: Firmware Versions

    Support changes to SEL-2711 firmware SLBT-2711R-100 Original Boot Firmware Release. To find the firmware revision number in your SEL-2711 within an SEL-2030, use the ID command on the appropriate port (17 or 18). The SEL-2711 has two firmware revision numbers, one for SEL and one for the main executable.

  • Page 77: Appendix B: Error Codes And Messages

    APPENDIX B: ERROR CODES AND MESSAGES This appendix describes the coding that the SEL-2711 uses to tell the host its status and any error conditions that may exist. See Section 4: Operation With SEL-2030 for information on how to access this information. For information on Modbus Plus error codes, see Section 3: Operation and Network Configuration.

  • Page 78: Error Messages

    Flash Bad SEL-2711 Flash failure - Bit 2 of error code will be set. Interf Bad The interface between the SEL-2711 and the host is bad - Bit 6 of error code will be set. MB+: n Modbus Plus error - Bit 4 of error code will be set.
  • Page 79 Table B.1: SEL-2711 Software Errors Hexadecimal Code Description 2.0-sec interface timeout bad interface opcode interface data error interface test error interface xfer-done error bad interface path bad transfer state bad transfer length global-data length error global-data address error global-data not present Table B.2: Peer Processor Internal Failures...
  • Page 80 Hexadecimal Code Description reserved rcv-buf error bad trans-control state bad work request bit node-queue overflow bad data-queue error empty data-path error bad path search index bad data-slave path Error Codes and Messages Date Code 980420 SEL-2711 Instruction Manual...

  • Page 81: Appendix C: Modbus Plus Message Example

    A normal response will have the following format: function code - read holding register byte count 40; number of data bytes in 20 registers data - 40 bytes (20 registers) of data Date Code 980420 Modbus Plus Message Example SEL-2711 Instruction Manual...
  • Page 83 SEL-2030/2711 D UMMARY Input Register Map Coil Map Holding Register Map if MAP_IR=Y Input Register Offset Coil Offset Address Corresponding Bits Address Corresponding Data 1 - 16 1:RB16 - 1:RB1 1 - 2048 Port 1 User Region 17 - 32 2:RB16 - 2:RB1 2049 - 4096 Port 2 User Region...
  • Page 84 Relay Data Holding Register Map Relay Type 10-30 P(whole) P(frac) Q(whole) Q(part) Dem IA Dem IB Dem IC Dem IR Dem P Dem P Dem Q Dem Q Dem 3I2 Dem 3I2Y Peak IA Peak IB Peak IC Peak IR Peak P Peak P Peak Q...

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