The Multilin DGCV Voltage Regulator Controller

Transcription

1 GE Digital Energy The Multilin DGCV Voltage Regulator Controller Multilin DGCV Revision: 1.10 Manual P/N: A1 GE publication code: GEK Copyright 2011 GE Digital Energy Communications Guide GE Digital Energy 215 Anderson Avenue, Markham, Ontario Canada L6E 1B3 Tel: (905) Fax: (905) Internet: * A1* MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDEGE Multilin's Quality Management System is registered to

2 2011 GE Digital Energy Incorporated. All rights reserved. The Multilin DGCV Voltage Regulator Controller Communications Guide for revision Multilin DGCV Voltage Regulator Controller, EnerVista, EnerVista Launchpad, and EnerVista DGCV Setup are registered trademarks of GE Digital Energy Inc. The contents of this manual are the property of GE Digital Energy Inc. This documentation is furnished on license and may not be reproduced in whole or in part without the permission of GE Digital Energy. The content of this manual is for informational use only and is subject to change without notice. Part number: A1 (July 2011)

3 Table of Contents 1. COMMUNICATIONS INTERFACES 2. RS485 INTERFACE Electrical Interface... 1 MODBUS Protocol... 2 Data Frame Format and Data Rate...2 Data Packet Format...2 Error Checking...3 CRC-16 Algorithm...3 Timing...4 Multilin DGCV supported functions...4 DNP protocol settings... 5 DNP communication...5 DNP device profile...5 DNP implementation...8 DNP serial EnerVista Setup...12 DNP general USB INTERFACE MODBUS Protocol... 1 Data Frame Format and Data Rate...1 Data Packet Format...1 Error Checking...2 CRC-16 Algorithm...2 Timing...3 Multilin DGCV supported functions MODBUS MEMORY MAP MODBUS memory map... 1 Format Codes MODBUS FUNCTIONS Function Code 03H... 1 Function Code 04H... 3 Function Code 05H... 4 Function Code 06H... 5 Function Code 07H... 6 Function Code 08H... 7 Function Code 10H... 8 Error Responses... 9 Force coil commands...10 Performing Commands Using Function Code 10H...12 MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE toc 1

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5 Digital Energy Multilin DGCV Voltage Regulator Controller Chapter 1: Communications interfaces Communications interfaces The Multilin DGCV has two communications interfaces. These can be used simultaneously: RS485 USB MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE 1 1

6 CHAPTER 1: COMMUNICATIONS INTERFACES 1 2 MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE

7 Digital Energy Multilin DGCV Voltage Regulator Controller Chapter 2: RS485 interface RS485 interface Electrical Interface The hardware or electrical interface in the Multilin DGCV is two-wire RS485. In a two-wire link, data is transmitted and received over the same two wires. Although RS485 two wire communication is bi-directional, the data is never transmitted and received at the same time. This means that the data flow is half duplex. RS485 lines should be connected in a daisy chain configuration with terminating networks installed at each end of the link (i.e. at the master end and at the slave farthest from the master). The terminating network should consist of a 120 W resistor in series with a 1 nf ceramic capacitor when used with Belden 9841 RS485 wire. Shielded wire should always be used to minimize noise. The shield should be connected to all of the Multilin DGCV s as well as the master, then grounded at one location only. This keeps the ground potential at the same level for all of the devices on the serial link. NOTE: NOTE Polarity is important in RS485 communications. The '+' (positive) terminals of every device must be connected together. MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE 2 1

8 MODBUS PROTOCOL CHAPTER 2: RS485 INTERFACE MODBUS Protocol The Multilin DGCV implements a subset of the Modicon Modbus RTU serial communication standard. The Modbus protocol is hardware-independent. That is, the physical layer can be any of a variety of standard hardware configurations. This includes USB, RS485, fibre optics, etc. Modbus is a single master / multiple slave type of protocol suitable for a multidrop configuration. The Multilin DGCV is always a Modbus slave. It can not be programmed as a Modbus master. Computers or PLCs are commonly programmed as masters. Both monitoring and control are possible using read and write register commands. Other commands are supported to provide additional functions. The Modbus protocol has the following characteristics. : 1 to 254 Supported Modbus function codes: 3H, 4H, 5H, 6H, 7H, 8H, 10H Data Frame Format and Data Rate One data frame of an asynchronous transmission to or from a Multilin DGCV typically consists of 1 start bit, 8 data bits, and 1 stop bit. This produces a 10 bit data frame. This is important for transmission through modems at high bit rates. Modbus protocol can be implemented at any standard communication speed. The Multilin DGCV supports operation at 9600, 19200, 38400, 57600, and baud. The USB interface will support only baud. Data Packet Format A complete request/response sequence consists of the following bytes (transmitted as separate data frames): Master Request Transmission: SLAVE ADDRESS: 1 byte FUNCTION CODE: 1 byte DATA: variable number of bytes depending on FUNCTION CODE CRC: 2 bytes Slave Response Transmission: SLAVE ADDRESS: 1 byte FUNCTION CODE: 1 byte DATA: variable number of bytes depending on FUNCTION CODE CRC: 2 bytes SLAVE ADDRESS: This is the first byte of every transmission. This byte represents the userassigned address of the slave device that is to receive the message sent by the master. Each slave device must be assigned a unique address and only the addressed slave will respond to a transmission that starts with its address. In a master request transmission the SLAVE ADDRESS represents the address of the slave to which the request is being sent. In a slave response transmission the SLAVE ADDRESS represents the address of the slave that is sending the response. FUNCTION CODE: This is the second byte of every transmission. Modbus defines function codes of 1 to 127. DATA: This will be a variable number of bytes depending on the FUNCTION CODE. This may be Actual Values, Setpoints, or addresses sent by the master to the slave or by the slave to the master. CRC: This is a two byte error checking code. 2 2 MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE

9 CHAPTER 2: RS485 INTERFACE MODBUS PROTOCOL Error Checking The RTU version of Modbus includes a two byte CRC-16 (16 bit cyclic redundancy check) with every transmission. The CRC-16 algorithm essentially treats the entire data stream (data bits only; start, stop and parity ignored) as one continuous binary number. This number is first shifted left 16 bits and then divided by a characteristic polynomial ( B). The 16 bit remainder of the division is appended to the end of the transmission, MSByte first. The resulting message including CRC, when divided by the same polynomial at the receiver will give a zero remainder if no transmission errors have occurred. If a Multilin DGCV Modbus slave device receives a transmission in which an error is indicated by the CRC-16 calculation, the slave device will not respond to the transmission. A CRC-16 error indicates than one or more bytes of the transmission were received incorrectly and thus the entire transmission should be ignored in order to avoid the Multilin DGCV performing any incorrect operation. The CRC-16 calculation is an industry standard method used for error detection. An algorithm is included here to assist programmers in situations where no standard CRC-16 calculation routines are available. CRC-16 Algorithm Once the following algorithm is complete, the working register A will contain the CRC value to be transmitted. Note that this algorithm requires the characteristic polynomial to be reverse bit ordered. The MSBit of the characteristic polynomial is dropped since it does not affect the value of the remainder. The following symbols are used in the algorithm: >: data transfer A: 16 bit working register AL: low order byte of A AH: high order byte of A CRC: 16 bit CRC-16 value i, j: loop counters (+): logical exclusive or operator Di: i-th data byte (i = 0 to N-1) G: 16 bit characteristic polynomial = with MSbit dropped and bit order reversed shr(x): shift right (the LSbit of the low order byte of x shifts into a carry flag, a '0' is shifted into the MSbit of the high order byte of x, all other bits shift right one location The algorithm is: 1. FFFF hex > A 2. 0 > i 3. 0 > j 4. Di (+) AL > AL 5. j+1 > j 6. shr(a) MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE 2 3

10 MODBUS PROTOCOL CHAPTER 2: RS485 INTERFACE 7. is there a carry? No: go to 8. Yes: G (+) A > A 8. is j = 8? No: go to 5. Yes: go to i+1 > i 10. is i = N? No: go to 3. Yes: go to A > CRC Timing Data packet synchronization is maintained by timing constraints. The receiving device must measure the time between the reception of characters. If 3.5 character times elapse without a new character or completion of the packet, then the communication link must be reset (i.e. all slaves start listening for a new transmission from the master). Thus at 9600 baud a delay of greater than 3.5 x 1 / 9600 x 10 = 3.65ms will cause the communication link to be reset. Multilin DGCV supported functions The following functions are supported by the Multilin DGCV : FUNCTION CODE 03H - Read Setpoints FUNCTION CODE 04H - Read Actual Values FUNCTION CODE 05H - Execute Operation FUNCTION CODE 06H - Store Single Setpoint FUNCTION CODE 07H - Read Device Status FUNCTION CODE 08H - Loopback Test FUNCTION CODE 10H - Store Multiple Setpoints Refer to Chapter 4 of this guide for more details on MODBUS function codes. 2 4 MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE

11 CHAPTER 2: RS485 INTERFACE DNP PROTOCOL SETTINGS DNP protocol settings DNP communication Figure 1: DNP communication menu S1 DNP DNP GENERAL DEFAULT VARIATION DNP POINTS LIST cdr S1 DNP GENERAL DNP ADDRESS TME SYNC IIN PER. DNP MSG FRAG SIZE DEFAULT VARIATION DNP OBJECT 1 DNP OBJECT 2 DNP OBJECT 20 DNP OBJECT 21 DNP OBJECT 22 DNP OBJECT 23 DNP OBJECT 30 DNP OBJECT 32 S1 DNP POINTS LIST BINARY INPUTS BINARY OUTPUTS ANALOG INPUTS POINT 0 POINT 1 POINT 2... POINT 63 POINT 0 ON POINT 0 OFF POINT 1 ON POINT 1 OFF... POINT 15 ON POINT 15 OFF POINT 0 ENTRY POINT 1 ENTRY POINT 2 ENTRY... POINT 31 ENTRY The following path is available using the keypad. PATH: SETPOINTS > RELAY SETUP > COMMUNICATIONS > DNP PROTOCOL > DNP GENERAL To view the list of DNP Binary Inputs, please refer to section FC134B of the Format Codes table in this guide. DNP device profile DNP 3.0 Device Profile (Also see the IMPLEMENTATION TABLE in the following section) Vendor Name: General Electric Multilin Device Name: DGC-VR Highest DNP Level Supported: For Requests: Level 2 For Responses: Level 2 Device Function: Master Slave MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE 2 5

12 DNP PROTOCOL SETTINGS CHAPTER 2: RS485 INTERFACE DNP 3.0 Device Profile Notable objects, functions, and/or qualifiers supported in addition to the Highest DNP Levels Supported (the complete list is described in the attached table): Binary Inputs (Object 1) Binary Input Changes (Object 2) Binary Outputs (Object 10) Control Relay Output Block (Object 12) Binary Counters (Object 20) Frozen Counters (Object 21) Counter Change Event (Object 22) Frozen Counter Event (Object 23) Analog Inputs (Object 30) Analog Input Changes (Object 32) Analog Deadbands (Object 34) Time and Date (Object 50) Internal Indications (Object 80) Maximum Data Link Frame Size (octets): Maximum Application Fragment Size (octets): Transmitted: 292 Transmitted: configurable up to 2048 Received: 292 Received: 2048 Maximum Data Link Re-tries: Maximum Application Layer Re-tries: None None Fixed at 3 Configurable Configurable Requires Data Link Layer Confirmation: Never Always Sometimes Configurable Requires Application Layer Confirmation: Never Always When reporting Event Data When sending multi-fragment responses Sometimes Configurable Timeouts while waiting for: Data Link Confirm: None Fixed Variable Configurable Complete Appl. Fragment: None Fixed Variable Configurable Application Confirm: None Fixed at 10 s Variable Configurable Complete Appl. Response: None Fixed at Variable Configurable 2 6 MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE

13 CHAPTER 2: RS485 INTERFACE DNP PROTOCOL SETTINGS DNP 3.0 Device Profile Others: Transmission Delay: No intentional delay Need Time Interval: Configurable (default = 24 hrs.) Select/Operate Arm Timeout: 10 s Binary input change scanning period: 8 times per power system cycle Analog input change scanning period: 500 ms Counter change scanning period: 500 ms Frozen counter event scanning period: 500 ms Sends/Executes Control Operations: WRITE Binary Outputs Never Always Sometimes Configurable SELECT/OPERATE Never Always Sometimes Configurable DIRECT OPERATE Never Always Sometimes Configurable DIRECT OPERATE NO ACK Never Always Sometimes Configurable Count > 1 Never Always Sometimes Configurable Pulse On Never Always Sometimes Configurable Pulse Off Never Always Sometimes Configurable Latch On Never Always Sometimes Configurable Latch Off Never Always Sometimes Configurable Queue Never Always Sometimes Configurable Clear Queue Never Always Sometimes Configurable Explanation of Sometimes : Object 12 points are mapped to Virtual Inputs and Commands (Force Coils). Both Pulse On and Latch On operations perform the same function in the ; that is, the appropriate Virtual Input or Coil is put into the On state. The On/Off times and Count value are ignored. Pulse Off and Latch Off operations put the appropriate Virtual Input or Coil into the Off state. Trip and Close operations both put the appropriate Virtual Input or coil into the On state if a paired mapping is set, otherwise Trip will put into Off and Close will put into On. Reports Binary Input Change Events when no specific variation requested: Never Only time-tagged Only non-time-tagged Configurable Sends Unsolicited Responses: Never Configurable Only certain objects Sometimes ENABLE/DISABLE unsolicited Function codes supported Explanation: It will be disabled for RS-485 applications, since there is no collision avoidance mechanism. Default Counter Object/Variation: No Counters Reported Configurable (attach explanation) Default Object: 20 Default Variation: 1 Point-by-point list attached Reports time-tagged Binary Input Change Events when no specific variation requested: Never Binary Input Change With Time Binary Input Change With Relative Time Configurable (attach explanation) Sends Static Data in Unsolicited Responses: Never When Device Restarts When Status Flags Change No other options are permitted. Counters Roll Over at: No Counters Reported Configurable (attach explanation) 16 Bits Other Value: Point-by-point list attached MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE 2 7

14 DNP PROTOCOL SETTINGS CHAPTER 2: RS485 INTERFACE DNP 3.0 Device Profile Sends Multi-Fragment Responses: Yes No Time Sync Information: When does outstation set IIN 1.4 Maximum delay measurement error: Never Asserted at startup until first Time Synchronization request received Periodically, range to seconds Periodically, selectable from,, seconds Range 0 to minutes after last time sync (default 1440 minutes) Selectable from,, seconds after last time sync When time error may have drifted by range to ms When time error may have drifted by selectable from,, 5 ms DNP implementation Table 1: DNP Implementation OBJECT REQUEST RESPONSE OBJECT NO. VARIATION NO. DESCRIPTION 1 0 Binary Input (Variation 0 is used to request default variation) FUNCTION CODES (DEC) 1 (read) 22 (assign class) 1 Binary Input 1 (read) 22 (assign class) 2 Binary Input with Status 1 (read) 22 (assign class) 2 0 Binary Input Change (Variation 0 is used to request default variation) 1 Binary Input Change without Time 2 Binary Input Change with Time 3 Binary Input Change with Relative Time 10 0 Binary Output Status (Variation 0 is used to request default variation) QUALIFIER CODES (HEX) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 1 (read) 06 (no range, or all) 07, 08 (limited quantity) 1 (read) 06 (no range, or all) 07, 08 (limited quantity) 1 (read) 06 (no range, or all) 07, 08 (limited quantity) 1 (read) 06 (no range, or all) 07, 08 (limited quantity) 1 (read) 00, 01(start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) FUNCTION CODES (DEC) QUALIFIER CODES (HEX) 129 (response) 00, 01 (start-stop) 17, 28 (index) (see Note 2) 129 (response) 00, 01 (start-stop) 17, 28 (index) (see Note 2) (response) 130 (unsol. resp.) 129 (response) 130 (unsol. resp.) , 28 (index) 17, 28 (index) 2 8 MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE

15 CHAPTER 2: RS485 INTERFACE DNP PROTOCOL SETTINGS OBJECT REQUEST RESPONSE OBJECT NO. VARIATION NO. DESCRIPTION 2 Binary Output Status 1 (read) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 12 1 Control Relay Output Block 20 0 Binary Counter (Variation 0 is used to request default variation) 3 (select)4 (operate) 5 (direct op) 6 (dir. op, noack) 1 (read) 7 (freeze) 8 (freeze noack) 9 (freeze clear) 10 (frz. cl. noack) 22 (assign class) 1 32-Bit Binary Counter 1 (read)7 (freeze) 8 (freeze noack) 9 (freeze clear) 10 (frz. cl. noack) 22 (assign class) 2 16-Bit Binary Counter 1 (read) 7 (freeze) 8 (freeze noack) 9 (freeze clear) 10 (frz. cl. noack) 22 (assign class) 5 32-Bit Binary Counter without Flag 6 16-Bit Binary Counter without Flag 21 0 Frozen Counter(Variation 0 is used to request defaultvariation) 1 (read) 7 (freeze) 8 (freeze noack) 9 (freeze clear) 10 (frz. cl. noack) 22 (assign class) 1 (read) 7 (freeze) 8 (freeze noack) 9 (freeze clear) 10 (frz. cl. noack) 22 (assign class) 1 (read) 22 (assign class) 1 32-Bit Frozen Counter 1 (read) 22 (assign class) 2 16-Bit Frozen Counter 1 (read) 22 (assign class) 9 32-Bit Frozen Counter without Flag Bit Frozen Counter without Flag FUNCTION CODES (DEC) 1 (read) 22 (assign class) 1 (read) 22 (assign class) QUALIFIER CODES (HEX) 00, 01 (start-stop) 07, 08 (limited quantity) 17, 28 (index) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) FUNCTION CODES (DEC) 129 (response) 00, 01 (start-stop) 17, 28 (index) (see Note 2) 129 (response) echo of request (response) 00, 01 (start-stop) 17, 28 (index) (see Note 2) 129 (response) 00, 01 (start-stop) 17, 28 (index) (see Note 2) 129 (response) 00, 01 (start-stop) 17, 28 (index) (see Note 2) 129 (response) 00, 01 (start-stop) 17, 28 (index) (see Note 2) QUALIFIER CODES (HEX) 129 (response) 00, 01 (start-stop) 17, 28 (index) (see Note 2) 129 (response) 00, 01 (start-stop) 17, 28 (index) (see Note 2) 129 (response) 00, 01 (start-stop) 17, 28 (index) (see Note 2) 129 (response) 00, 01 (start-stop) 17, 28 (index) (see Note 2) MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE 2 9

16 DNP PROTOCOL SETTINGS CHAPTER 2: RS485 INTERFACE OBJECT REQUEST RESPONSE OBJECT NO. VARIATION NO. DESCRIPTION 22 0 Counter Change Event (Variation 0 is used to request default variation) 1 32-Bit Counter Change Event Bit Counter Change Event 5 32-Bit Counter Change Event with Time 6 16-Bit Counter Change Event with Time 0 Frozen Counter Event (Variation 0 is used to request default variation) 1 32-Bit Frozen Counter Event 2 16-Bit Frozen Counter Event 5 32-Bit Frozen Counter Event with Time 6 16-Bit Frozen Counter Event with Time 30 0 Analog Input (Variation 0 is used to request default variation) 1 (read) 06 (no range, or all) 07, 08 (limited quantity) 1 (read) 06 (no range, or all) 07, 08 (limited quantity) 1 (read) 06 (no range, or all) 07, 08 (limited quantity) 1 (read) 06 (no range, or all) 07, 08 (limited quantity) 1 (read) 06 (no range, or all) 07, 08 (limited quantity) 1 (read) 06 (no range, or all) 07, 08 (limited quantity) 1 (read) 06 (no range, or all) 07, 08 (limited quantity) 1 (read) 06 (no range, or all) 07, 08 (limited quantity) 1 (read) 06 (no range, or all) 07, 08 (limited quantity) 1 (read) 06 (no range, or all) 07, 08 (limited quantity) 1 (read) 22 (assign class) 1 32-Bit Analog Input 1 (read) 22 (assign class) 2 16-Bit Analog Input 1 (read) 22 (assign class) 3 32-Bit Analog Input without Flag 4 16-Bit Analog Input without Flag 32 0 Analog Change Event (Variation 0 is used to request default variation) 1 32-Bit Analog Change Event without Time FUNCTION CODES (DEC) 1 (read) 22 (assign class) 1 (read) 22 (assign class) QUALIFIER CODES (HEX) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 1 (read) 06 (no range, or all) 07, 08 (limited quantity) 1 (read) 06 (no range, or all) 07, 08 (limited quantity) FUNCTION CODES (DEC) (response) 130 (unsol. resp.) 129 (response) 130 (unsol. resp.) 129 (response) 130 (unsol. resp.) 129 (response) 130 (unsol. resp.) (response) 130 (unsol. resp.) 129 (response) 130 (unsol. resp.) 129 (response) 130 (unsol. resp.) 129 (response) 130 (unsol. resp.) , 28 (index) 17, 28 (index) 17, 28 (index) 17, 28 (index) 17, 28 (index) 17, 28 (index) 17, 28 (index) 17, 28 (index) 129 (response) 00, 01 (start-stop) 17, 28 (index) (see Note 2) 129 (response) 00, 01 (start-stop) 17, 28 (index) (see Note 2) 129 (response) 00, 01 (start-stop) 17, 28 (index) (see Note 2) 129 (response) 00, 01 (start-stop) 17, 28 (index) (see Note 2) (response) 130 (unsol. resp.) QUALIFIER CODES (HEX) 17, 28 (index) 2 10 MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE

17 CHAPTER 2: RS485 INTERFACE DNP PROTOCOL SETTINGS OBJECT REQUEST RESPONSE OBJECT NO. VARIATION NO. DESCRIPTION 2 16-Bit Analog Change Event without Time 3 32-Bit Analog Change Event with Time 4 16-Bit Analog Change Event with Time 34 0 Analog Input Reporting Deadband (Variation 0 is used to request defaultvariation) 1 16-bit Analog Input Reporting Deadband (default - see Note 1) 2 32-bit Analog Input Reporting Deadband 50 1 Time and Date (default - see Note 1) 1 (read) 06 (no range, or all) 07, 08 (limited quantity) 1 (read) 06 (no range, or all) 07, 08 (limited quantity) 1 (read) 06 (no range, or all) 07, 08 (limited quantity) 1 (read) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 1 (read) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 2 (write) 00, 01 (start-stop) 07, 08 (limited quantity) 17, 28 (index) 1 (read) 00, 01 (start-stop) 06 (no range, or all) 07, 08 (limited quantity) 17, 28 (index) 2 (write) 00, 01 (start-stop) 07, 08 (limited quantity) 17, 28 (index) 1 (read)2 (write) 00, 01 (start-stop) 06 (no range, or all) 07 (limited qty=1) 08 (limited quantity) 17, 28 (index) 129 (response) 130 (unsol. resp.) 129 (response) 130 (unsol. resp.) 129 (response) 130 (unsol. resp.) , 28 (index) 17, 28 (index) 17, 28 (index) 129 (response) 00, 01 (start-stop) 17, 28 (index) (see Note 2) (response) 00, 01 (start-stop) 17, 28 (index) (see Note 2) (response) 00, 01 (start-stop) 17, 28 (index) (see Note 2) 52 2 Time Delay Fine 129 (response) 07 (limited quantity) (quantity = 1) 60 0 Class 0, 1, 2, and 3 Data 1 (read) 20 (enable unsol) 21 (disable unsol) 22 (assign class) 06 (no range, or all) Class 0 Data 1 (read) 22 (assign class) 2 Class 1 Data 1 (read) 20 (enable unsol) 06 (no range, or all) (no range, or all) 07, 08 (limited quantity) 3 Class 2 Data 21 (disable unsol) 4 Class 3 Data 22 (assign class) 80 1 Internal Indications 1 (read) 00, 01 (start-stop) (index =7) No Object (function code only) see Note 3 No Object (function code only) No Object (function code only) FUNCTION CODES (DEC) 2 (write) (see Note 3) 13 (cold restart) 14 (warm restart) 23 (delay meas.) QUALIFIER CODES (HEX) 00 (start-stop) (index =7) FUNCTION CODES (DEC) (response) 00, 01 (start-stop) QUALIFIER CODES (HEX) MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE 2 11

18 DNP PROTOCOL SETTINGS CHAPTER 2: RS485 INTERFACE NOTE: NOTE 1. A default variation refers to the variation response when variation 0 is requested and/ or in class 0, 1, 2, or 3 scans. The default variations for object types 1, 2, 20, 21, 22, 23, 30, and 32 are selected via relay settings. This optimizes the class 0 poll data size. 2. For static (non-change-event) objects, qualifiers 17 or 28 are only responded when a request is sent with qualifiers 17 or 28, respectively. Otherwise, static object requests sent with qualifiers 00, 01, 06, 07, or 08, will be responded with qualifiers 00 or 01 (for ChangeEvent objects, qualifiers 17 or 28 are always responded.) 3. Cold restarts are implemented the same as warm restarts the Multilin DGCV is not restarted, but the DNP process is restarted. DNP serial EnerVista Setup The following tables show the settings needed to configure all the DNP 3.0 implementation parameters. Table 2: RS-485 SETTINGS PARAMETER RANGE FORMAT RS485 Baud Rate , 19200, 38400, 57600, F RS485 Comm Parity None None, Odd, Even F102 Rear 485 Protocol DNP 3.0 Modbus, DNP 3.0 F97 In order to activate DNP 3.0 at the RS485 rear port, the setting "Rear 485 Protocol" must be set to DNP 3.0. Once the setting has been changed, the relay must be switched off, then switched on. Table 3: DNP protocol SETTINGS PARAMETER RANGE FORMAT DNP Time Sync IIN Period 1440 min 1 to min F1 DNP Message Fragment Size to 2048 F1 DNP Object 1 Default Variation 2 1 ; 2 F1 DNP Object 2 Default Variation 2 1 ; 2 F1 DNP Object 20 Default Variation 1 1 ; 2, 5 ; 6 F78 DNP Object 21 Default Variation 1 1 ; 2 ; 9 ; 10 F79 DNP Object 22 Default Variation 1 1 ; 2, 5 ; 6 F80 DNP Object 23 Default Variation 1 1 ; 2, 5 ; 6 F81 DNP Object 30 Default Variation 1 1 ; 2 ;3 ; 4 F82 DNP Object 32 Default Variation 1 1 ; 2 ;3 ; 4 F MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE

19 CHAPTER 2: RS485 INTERFACE DNP PROTOCOL SETTINGS Table 4: DNP point list SETTINGS PARAMETER RANGE FORMAT Binary Input Point 0 Entry Select entry Operands F134 from a list Binary Input Point 63 Entry Select entry from a list Operands F134 Analog Input Point 0 Entry Select entry Analog parameters from a list Analog Input Point 0 Scale Factor ; 0.01 ; 0.1 ; 1 ; 10 ; 100 ; F ; ; Analog Input Point 0 Deadband to F9 Analog Input Point 31 Entry Select entry from a list Analog parameters Analog Input Point 31 Scale Factor ; 0.01 ; 0.1 ; 1 ; 10 ; 100 ; 1000 ; ; F85 Analog Input Point 31 Deadband to F9 Binary Output Point 0 ON Binary Output Point 0 OFF Select entry from a list Select entry from a list Virtual Input 1 to 32 and Force Coils Virtual Input 1 to 32 and Force Coils F86 F86 Binary Output Point 15 ON Binary Output Point 15 OFF Select entry from a list Select entry from a list Virtual Input 1 to 32 and Force Coils Virtual Input 1 to 32 and Force Coils F86 F86 DNP UNSOL RESPONSE FUNCTION should be Disabled for RS485 applications, since there is no collision avoidance mechanism. The DNP Time Sync IIN Period setting determines how often the Need Time Internal Indication (IIN) bit is set by the. Changing this time allows the to indicate that a time synchronization command is necessary more or less often Various settings have been included to configure Default Variation for the Binary Inputs, Counters and Analog Inputs Objects. The default variation refers to the variation response when variation 0 is requested, and/or in class 0, 1, 2, or 3 scans Up to 64 Binary Inputs and 32 Analog Input entries can be mapped to an item from a list of status events and metered values. Status events correspond to Function Code 134B. Each Analog Input point Deadband and Scale Factor can be set individually instead of setting a general deadband or scale for different metering groups. This will avoid scale and deadband conflicts for different meterings of the same nature. Up to 16 Binary/Control Outputs can be configured by selecting a Virtual Input or Command from a list of 32 Virtual Inputs and Commands (Force Coils). Some legacy DNP implementations use a mapping of one DNP Binary Output to two physical or virtual control points. In Order to configure Paired Control Points the source for states ON and OFF should be set to different Virtual Inputs or Commands. The DNP Technical Committee recommends using contiguous point numbers, starting at 0, for each data type, because some DNP3 Master implementations allocate contiguous memory from point 0 to the last number for each data type. MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE 2 13

20 DNP PROTOCOL SETTINGS CHAPTER 2: RS485 INTERFACE NOTE: Binary Inputs are inputs to the Master. Binary Outputs are outputs from the Master. NOTE DNP general Default variations for Object 1, 2, 20, 21, 22, 23, 30 and Object 32 will be set by settings and returned for the object in a response when no specific variation is specified in a Master request. Any change in the state of any binary point causes the generation of an event, and consequently it is returned when the Master asks for it. The same behavior will be seen when an analog value changes by more than its configured deadband limit. There can be only one Serial Master. The following Default Classes will be fixed for the different blocks of data: Binary Input Points Default Class = 1 Analog Input Point Default Class = 2 Counters Default Class = 3 Each Data Point Class can be changed by protocol function code 22 in volatile mode. If a restart is performed, the new values will be lost. DNP Object 34 points can be used to change deadband values from the default for each individual DNP Analog Input point. These new deadbands will be maintained such that in the case of a relay restart, the values are not lost. Two Binary Counters have been hardcoded such that no option can be modified by setting: Counter 1 Counter 2 Counter 3 Counter 4 Counter 5 DGC-VR N.A. VR 24h tap changes VR total tap changes N.A. N.A. Requests for Object 20 (Binary Counters), Object 21 (Frozen Counters), and Object 22 (Counter Change Events) must be accepted. Function codes Immediate Freeze, Freeze and Clear etc. are accepted as well MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE

21 Digital Energy Multilin DGCV Voltage Regulator Controller Chapter 3: USB interface USB interface Note that the USB interface supports only the Modbus protocol. MODBUS Protocol The Multilin DGCV implements a subset of the Modicon Modbus RTU serial communication standard. The Modbus protocol is hardware-independent. That is, the physical layer can be any of a variety of standard hardware configurations. This includes USB, RS485, fibre optics, etc. Modbus is a single master / multiple slave type of protocol suitable for a multidrop configuration. The Multilin DGCV is always a Modbus slave. It can not be programmed as a Modbus master. Computers or PLCs are commonly programmed as masters. Both monitoring and control are possible using read and write register commands. Other commands are supported to provide additional functions. The Modbus protocol has the following characteristics. : 1 to 254 Supported Modbus function codes: 3H, 4H, 5H, 6H, 7H, 8H, 10H Data Frame Format and Data Rate One data frame of an asynchronous transmission to or from a Multilin DGCV typically consists of 1 start bit, 8 data bits, and 1 stop bit. This produces a 10 bit data frame. This is important for transmission through modems at high bit rates. Modbus protocol can be implemented at any standard communication speed. The Multilin DGCV supports operation at 9600, 19200, 38400, 57600, and baud. The USB interface will support only baud. Data Packet Format A complete request/response sequence consists of the following bytes (transmitted as separate data frames): Master Request Transmission: SLAVE ADDRESS: 1 byte MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE 3 1

22 MODBUS PROTOCOL CHAPTER 3: USB INTERFACE Error Checking FUNCTION CODE: 1 byte DATA: variable number of bytes depending on FUNCTION CODE CRC: 2 bytes Slave Response Transmission: SLAVE ADDRESS: 1 byte FUNCTION CODE: 1 byte DATA: variable number of bytes depending on FUNCTION CODE CRC: 2 bytes SLAVE ADDRESS: This is the first byte of every transmission. This byte represents the userassigned address of the slave device that is to receive the message sent by the master. Each slave device must be assigned a unique address and only the addressed slave will respond to a transmission that starts with its address. In a master request transmission the SLAVE ADDRESS represents the address of the slave to which the request is being sent. In a slave response transmission the SLAVE ADDRESS represents the address of the slave that is sending the response. FUNCTION CODE: This is the second byte of every transmission. Modbus defines function codes of 1 to 127. DATA: This will be a variable number of bytes depending on the FUNCTION CODE. This may be Actual Values, Setpoints, or addresses sent by the master to the slave or by the slave to the master. CRC: This is a two byte error checking code. The RTU version of Modbus includes a two byte CRC-16 (16 bit cyclic redundancy check) with every transmission. The CRC-16 algorithm essentially treats the entire data stream (data bits only; start, stop and parity ignored) as one continuous binary number. This number is first shifted left 16 bits and then divided by a characteristic polynomial ( B). The 16 bit remainder of the division is appended to the end of the transmission, MSByte first. The resulting message including CRC, when divided by the same polynomial at the receiver will give a zero remainder if no transmission errors have occurred. If a Multilin DGCV Modbus slave device receives a transmission in which an error is indicated by the CRC-16 calculation, the slave device will not respond to the transmission. A CRC-16 error indicates than one or more bytes of the transmission were received incorrectly and thus the entire transmission should be ignored in order to avoid the Multilin DGCV performing any incorrect operation. The CRC-16 calculation is an industry standard method used for error detection. An algorithm is included here to assist programmers in situations where no standard CRC-16 calculation routines are available. CRC-16 Algorithm Once the following algorithm is complete, the working register A will contain the CRC value to be transmitted. Note that this algorithm requires the characteristic polynomial to be reverse bit ordered. The MSBit of the characteristic polynomial is dropped since it does not affect the value of the remainder. The following symbols are used in the algorithm: >: data transfer A: 16 bit working register AL: low order byte of A AH: high order byte of A CRC: 16 bit CRC-16 value i, j: loop counters 3 2 MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE

23 CHAPTER 3: USB INTERFACE MODBUS PROTOCOL (+): logical exclusive or operator Di: i-th data byte (i = 0 to N-1) G: 16 bit characteristic polynomial = with MSbit dropped and bit order reversed shr(x): shift right (the LSbit of the low order byte of x shifts into a carry flag, a '0' is shifted into the MSbit of the high order byte of x, all other bits shift right one location The algorithm is: 1. FFFF hex > A 2. 0 > i 3. 0 > j 4. Di (+) AL > AL 5. j+1 > j 6. shr(a) 7. is there a carry? No: go to 8. Yes: G (+) A > A 8. is j = 8? No: go to 5. Yes: go to i+1 > i 10. is i = N? No: go to 3. Yes: go to A > CRC Timing Data packet synchronization is maintained by timing constraints. The receiving device must measure the time between the reception of characters. If 3.5 character times elapse without a new character or completion of the packet, then the communication link must be reset (i.e. all slaves start listening for a new transmission from the master). Thus at 9600 baud a delay of greater than 3.5 x 1 / 9600 x 10 = 3.65ms will cause the communication link to be reset. Multilin DGCV supported functions The following functions are supported by the Multilin DGCV : FUNCTION CODE 03H - Read Setpoints FUNCTION CODE 04H - Read Actual Values FUNCTION CODE 05H - Execute Operation FUNCTION CODE 06H - Store Single Setpoint MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE 3 3

24 MODBUS PROTOCOL CHAPTER 3: USB INTERFACE FUNCTION CODE 07H - Read Device Status FUNCTION CODE 08H - Loopback Test FUNCTION CODE 10H - Store Multiple Setpoints Refer to Chapter 4 of this guide for more details on MODBUS function codes. 3 4 MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE

25 Digital Energy Multilin DGCV Voltage Regulator Controller Chapter 4: MODBUS memory map MODBUS memory map MODBUS memory map Modbus Hex Description Min Max Step Units Format Code Factory Default ACTUAL VALUES PRODUCT INFORMATION Product Device Code F22 MJ Hardware Revision F Firmware Version 0 0xFFFF F Display Software Version 0 0xFFFF F Modification Number F Boot Version 0 0xFFFF F Boot Modification Number F Serial Number F22 MJ D Order Code F22 DGC- 16 SEHSSBBAE Database Version 0 0xFFFF F Build Date F22 Unknown A Build Time F22 Unknown E Original Calibration Date 0x010107D8 0X0C1F082E F Last Calibration Date 0x010107D8 0X0C1F082E F D Platform Version 0 0xFFFF F AMBIENT TEMP STATISTIC VALUES Ambient Temperature C F Maximum Ambient Temperature Minimum C F Size in Words MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE 4 1

26 MODBUS MEMORY MAP CHAPTER 4: MODBUS MEMORY MAP Modbus Hex Description Min Max Step Units Format Code Factory Default Ambient Temperature Total C F Sum Counter Temperature < xFFFFFFFF F C B Counter -20 C < 0 0xFFFFFFFF F Temperature < 60 C D Counter 60 C < Temperature 0 0xFFFFFFFF F < 70 C F Counter 70 C < Temperature < 80 C 0 0xFFFFFFFF F Counter Temperature > 80 C 0 0xFFFFFFFF F ACTIVE DISPLAY MESSAGE Active Display Message F22 Active 40 Display Msg LEDs LED Status 0 0xFFFFFFFF FC144_V R LED Quick Setpoint Status 0 0xFFFF FC144A_ VR PRODUCT INFORMATION Last Serviced 0x010107D8 0X0C1F082E F Main Boot Code Date F22 Unknown E Main Boot Code Time F22 Unknown 4 DEVICE STATUS Current Security Access F Level Device Status 0 0xFFFF FC A Active Setpoint Group F91A COMMUNICATION STATUS E Serial Status FC INTERNAL FAULT CAUSE A2 Internal Fault Cause 0 0xFFFFFFFF FC REAL-TIME CLOCK DE Weekday F DF Date (Read Only) 0x010107D9 0x0C1F F E1 Time (Read Only) 0 0X173B3B F E3 Daylight Savings Active FC INPUTS / OUTPUTS EC Contact Input 32-1 (Bit Field) 0 0xFFFFFFFF FC EE Virtual Input 32-1 (Bit Field) 0 0xFFFFFFFF FC F0 Virtual Output 32-1 (Bit 0 0xFFFFFFFF FC Field) F2 Contact Output 32-1 (Bit Field) 0 0xFFFFFFFF FC TRIP STATUS BUFFER FA Trip Status 4 0 0xFFFFFFFF FC FC Trip Status 3 0 0xFFFFFFFF FC FE Trip Status 2 0 0xFFFFFFFF FC Trip Status 1 0 0xFFFFFFFF FC Size in Words 4 2 MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE

27 CHAPTER 4: MODBUS MEMORY MAP MODBUS MEMORY MAP Modbus Hex Description Min Max Step Units Format Code Factory Default ALARM STATUS BUFFER Alarm Status 4 0 0xFFFFFFFF FC Alarm Status 3 0 0xFFFFFFFF FC Alarm Status 2 0 0xFFFFFFFF FC Alarm Status 1 0 0xFFFFFFFF FC CONTROL STATUS BUFFER A Control Element Status 4 0 0xFFFFFFFF FC C Control Element Status 3 0 0xFFFFFFFF FC E Control Element Status 2 0 0xFFFFFFFF FC Control Element Status 1 0 0xFFFFFFFF FC BLOCK STATUS BUFFER Block Status 4 0 0xFFFFFFFF FC Block Status 3 0 0xFFFFFFFF FC Block Status 2 0 0xFFFFFFFF FC Block Status 1 0 0xFFFFFFFF FC MESSAGE STATUS BUFFER A Message Status 4 0 0xFFFFFFFF FC C Message Status 3 0 0xFFFFFFFF FC E Message Status 2 0 0xFFFFFFFF FC Message Status 1 0 0xFFFFFFFF FC PHASE IOC TRIP STATUS Trip Phase A Status 2 0 0xFFFF FC A Trip Phase B Status 2 0 0xFFFF FC B Trip Phase C Status 2 0 0xFFFF FC PHASE OV TRIP STATUS Trip Phase A Status 5 0 0xFFFF FC Trip Phase B Status 5 0 0xFFFF FC Trip Phase C Status 5 0 0xFFFF FC PHASE UV TRIP STATUS Trip Phase A Status 6 0 0xFFFF FC Trip Phase B Status 6 0 0xFFFF FC Trip Phase C Status 6 0 0xFFFF FC PHASE IOC ALARM STATUS B Alarm Phase A Status 2 0 0xFFFF FC C Alarm Phase B Status 2 0 0xFFFF FC D Alarm Phase C Status 2 0 0xFFFF FC PHASE OV ALARM STATUS Alarm Phase A Status 5 0 0xFFFF FC Alarm Phase B Status 5 0 0xFFFF FC Alarm Phase C Status 5 0 0xFFFF FC PHASE UV ALARM STATUS Alarm Phase A Status 6 0 0xFFFF FC Alarm Phase B Status 6 0 0xFFFF FC Alarm Phase C Status 6 0 0xFFFF FC TEMPERATURE Internal Temperature C F Size in Words MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE 4 3

28 MODBUS MEMORY MAP CHAPTER 4: MODBUS MEMORY MAP Modbus Hex Description Min Max Step Units Format Code Factory Default Ambient Temperature C F Internal Temperature Max C F CURRENT METERING In A F Ia A F Ib A F Ic A F Iavg A F B Current Unbalance % F C Ig A F E Line Current A F VOLTAGE METERING Vab V F Vbc V F Vca V F B Average Line Voltage V F D Van V F F Vbn V F Vcn V F Average Phase Voltage V F Frequency Hz F Line Voltage V F A Line Compensated Voltage V F E Line Current Angle F F Line Voltage Angle F A0 Line Compensated Voltage F Angle A3 Voltage Unbalance %Un b F POWER & ENERGY METERING BE Power Factor F BF 3 Phase Active Power kw F C1 3 Phase Reactive Power kvar F C4 MWh Consumption MWh F C6 Mvarh Consumption Mvar F h C8 Mvarh Generation Mvar F h CA 3 Phase Apparent Power kva F CC MWh Generation MWh F CE Delta Reactive Power kvar F PHASE ANGLES D6 Va1 Angle F D7 Vb1 Angle F D8 Vc1 Angle F D9 Ia Angle F DA Ib Angle F Size in Words 4 4 MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE

29 CHAPTER 4: MODBUS MEMORY MAP MODBUS MEMORY MAP Modbus Hex Description Min Max Step Units Format Code Factory Default DB Ic Angle F DC Van Angle F DD Vbn Angle F DE Vcn Angle F DF Ig Angle F E0 In Angle F E3 Vab Angle F E4 Vbc Angle F E5 Vca Angle F SYMMETRICAL COMPONENTS ED Positive Sequence Current A F Magnitude EE Positive Sequence Current Lag F Angle EF Negative Sequence Current A F Magnitude F0 Negative Sequence Current Lag F Angle F1 Zero Sequence Current A F Magnitude F2 Zero Sequence Current Lag F Angle F3 Positive Sequence Voltage kv F Magnitude F5 Positive Sequence Voltage Lag F Angle F6 Negative Sequence Voltage kv F Magnitude F8 Negative Sequence Voltage Lag F Angle F9 Zero Sequence Voltage kv F Magnitude FB Zero Sequence Voltage Lag F Angle FC Negative Sequence Current Magnitude (1 Decimal Place) A F EVENT RECORDER Event Recorder Last Reset 2 0x010107D8 0X0C1F082E F words B Total Number Of Events Since Last Clear F EVENT RECORDER DETAILS C Cause 0 0xFFFF FC D Time 0 0X173B3B F F Date 0x010107D8 0X0C1F082E F Line Current A F Line Current Angle F Phase A Current A F Phase B Current A F Phase C Current A F A Line Voltage V F Size in Words MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE 4 5

30 MODBUS MEMORY MAP CHAPTER 4: MODBUS MEMORY MAP Modbus Hex Description Min Max Step Units Format Code Factory Default C Line Voltage Angle F D Vax Voltage V F F Vbx Voltage V F A1 Vcx Voltage V F A3 Power Factor F A4 3 Phase Active Power kw F A6 3 Phase Reactive Power kvar F A8 3 Phase Apparent Power kva F AA Frequency Hz F AC Actual Tap Position F1D AD Line Compensated Voltage V F B2 THD Current Phase A %fo F B3 THD Current Phase B %fo F B4 THD Current Phase C %fo F B5 THD Voltage Phase A %fo F B6 THD Voltage Phase B %fo F B7 THD Voltage Phase C %fo F DATA LOGGER BD Number Of Triggers Since Clear BE Number Of Data Log Samples Stored BF Data Log Start Index C0 Data Log Trigger Index C1 Trigger Cause 1 0xC FC133A C2 Trigger Date 0x010107D8 0X0C1F082E F C4 Trigger Time 0 0X173B3B F C6 Data Log Status F DATA LOGGER SAMPLES CA Data Log Sample DLSS F CB Data Log Sample DLSS F CC Data Log Sample DLSS F CD Data Log Sample DLSS F CE Data Log Sample DLSS F CF Data Log Sample DLSS F D0 Data Log Sample DLSS F D1 Data Log Sample DLSS F D2 Data Log Sample DLSS F D3 Data Log Sample DLSS F D4 Data Log Sample DLSS F D5 Data Log Sample DLSS F D6 Data Log Sample DLSS F D7 Data Log Sample DLSS F D8 Data Log Sample DLSS F D9 Data Log Sample DLSS F DA Data Log Sample DLSS F DB Data Log Sample DLSS F Size in Words 4 6 MULTILIN DGCV VOLTAGE REGULATOR CONTROLLER COMMUNICATIONS GUIDE