1. Manuals
  2. Brands
  3. Nexus Manuals
  4. Conference System
  5. I/O Module
  6. Installation & operation manual

Nexus I/O Module Installation & Operation Manual

For general applications
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Modbus
Communicating
I/O Modules
for General Applications
Installation & Operation Manual
Version 1.01
February 23, 2004
Doc # E134-7-15 V1.01
e
Electro Industries/GaugeTech
1800 Shames Drive
Westbury, New York 11590
Tel: 516-334-0870
Fax: 516-338-4741
u
E-mail:eigmeter1@aol.com
www.electroind.com
u
"The Leader in Web Accessed Power Monitoring"

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the I/O Module and is the answer not in the manual?

Questions and answers

Summary of Contents for Nexus I/O Module

  • Page 1 Modbus Communicating I/O Modules for General Applications Installation & Operation Manual Version 1.01 February 23, 2004 Doc # E134-7-15 V1.01 Electro Industries/GaugeTech 1800 Shames Drive Westbury, New York 11590 Tel: 516-334-0870 Fax: 516-338-4741 E-mail:eigmeter1@aol.com www.electroind.com “The Leader in Web Accessed Power Monitoring”...
  • Page 3 Nexus I/O Modules for Nexus High Performance Monitors Version 1.01 Published by: Electro Industries/GaugeTech 1800 Shames Drive Westbury, NY 11590 All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical,...
  • Page 4 Customer Service and Support Customer Service and Support Customer support is available 9:00 am to 4:30 pm, eastern standard time, Monday through Friday. Please have the model, serial number and a detailed problem description available. If the problem con- cerns a particular reading, please have all meter readings available. When returning any merchandise to EIG, a return authorization number is required.
  • Page 5 Today, with the Nexus 1252 and 1272, EIG is a leader in the development and production of power-monitoring products. All EIG products are designed, manufactured, tested and calibrated at our facility in Westbury, New York.
  • Page 6 Electro Industries/Gauge Tech Doc # E134-7-15 V1.01...

  • Page 7: Table Of Contents

    2.3.1: Communication Setup ......2-10 2.3.2: Using Nexus Communicator or Nexus Programmer Software ..2-10 2.3.3: Other Communication Functions Available .
  • Page 8 4.4: Type F4 Address (45057) ......4-3 4.5: Type F5 Baud Rate (45058) ......4-3 4.6: Type F6 Transmit Delay Time (45059) .
  • Page 9 Chapter 11: Relay Output Modbus Map (4RO1) 11.1: Relay Output Register Map ..... . . 11-1 Modbus Map for the Relay Output Module ....11-3 Chapter 12: KYZ Pulse Output Modules 12.1: Overview .
  • Page 10 Electro Industries/Gauge Tech viii Doc # E134-7-15 V1.01...

  • Page 11: Chapter 1: Introduction

    2. Assign a Unique Address to Module (for more than one of the same Module) (Section 2.2.2). 3. Determine Power Needed. Nexus 1250/1252 and PSIO provide 12 VA. Rule of thumb: 1 Power Source for up to 4 I/Os. See Steps to Determine Power Requirement (Section 2.2.3).
  • Page 12 Convert to Hex and from the pull-down menu, select CRC 16EI/MB RTU. Now Low Level Access is ready to send and receive Commands to and from the I/O Module(s) connected to the PC. Electro Industries/Gauge Tech Doc # E 134-7-15 V1.01...

  • Page 13: Example Commands

    1.4: Change the Device Address with Stand Alone Programmer This function is used when two or more of the same I/O Module are to be mounted together. Each I/O Module MUST have its own UNIQUE ADDRESS. With this screen the user can easily create a Unique Address BEFORE the units are mounted together.

  • Page 14: Electro Industries' Modbus I/O Modules And Accessories

    Baud Rate and Transmit Delay can also be changed. 4. Click Send Button. The Send button automatically Restarts the I/O Module being changed. 5. Click EXIT to close the screen and return to the Main Nexus Communicator or Nexus Programmer screen.

  • Page 15: Chapter 2: Installation

    • • Mounting Brackets (MBIO): used to secure one or more modules to a flat surface. Mounting Brackets (MBIO) Female RS-485 Side Port (Female Pins) LEDs I/O Port Integrated Fastening System (Size and pin configuration vary) Male RS-485 Side Port (Male Pins) Reset Button Figure 2.1: I/O Module Components Electro Industries/GaugeTech Doc # E134-7-15 V1.01...

  • Page 16: 1: Port Overview

    2.1.1: Port Overview 2.1.1: Port Overview All Electro Industries I/O Modules have ports through which they interface with other devices. The port configurations are variations of the four types shown below. Four Analog Outputs Four Analog Outputs Eight Analog Outputs Eight Analog Outputs (0-1mA and 4-20mA) (0-1mA and 4-20mA)

  • Page 17: Install External I/O Modules

    2.2.1: Install Communication Software 2.2.1: Install Communication Software Nexus Communicator or Nexus Programmer (Shareware) can be used to communicate with the I/O Modules. Nexus Programmer can be downloaded at no cost from the Electro Industries website, www.electroind.com.
  • Page 18 PC Disc Drive with the Save or Load button. 8. Click the Send Button to automatically Restart the I/O Module which will save changes. 9. Click Exit to Close the Stand Alone Programmer screen and return to the Nexus Communicator or Programmer screen.

  • Page 19: 3: Steps To Determine Power Requirement

    RESET button for 3 seconds; the module will reset to a Default Address of 247 at 57600 baud for 30-seconds. This will enable you to interrogate the I/O Module in Modbus RTU protocol. The module’s Address and Baud Rate can be read from Registers 45057-45058 (0x0B000-0x0B001) in the Modbus Map for each I/O Module.

  • Page 20: 4: Additional Power Source For I/O Modules

    Height: 3.41”, Width: 1.71”, Depth: 4.08”. Below are the labels for the PSIO. Power Connection: 1. Connect the PWR(+) of the PSIO to the male PWR(+) of the I/O Module; connect the PWR (-) of the PSIO to the male PWR (-) of the I/O Module.
  • Page 21 2. Determine if you must use an additional power source, such as the EIG PSIO (section 2.2.3). 3. Starting with the left module and using a slotted screw driver, fasten the first I/O Module to the left Mounting Bracket. The left Mounting Bracket is the one with the PEM. Fasten the internal screw tightly into the left Mounting Bracket.
  • Page 22 3. Next, slide the female RS-485 port into the male RS-485 side port to connect the next I/O module to the left module. Fasten together enough to grab but do not tighten. One by one combine the modules together using the Integrated Fastening System (Figure 2.7). If you require an additional power supply, attach a PSIO (power supply) to the right of each group of 4 I/O Modules (section 2.2.3).

  • Page 23: 6: Wire Rs-485 Communication To The I/O Modules

    ONLY IF NEEDED, connected to the A(+) and B(-) lines. RT is approximately 120 Ohms. Connect the A(+) and B(-) terminals of the male RS-485 connector of the I/O Module to the A(+) and B(-) terminals of the Master Device. Connect the shield(S) terminal to the shield of the Master Device.

  • Page 24: Communicating With The I/O Modules

    I/O Module is connected to a Nexus 1250/1252 meter or the I/O is a stand-alone. Below are steps required to communicate directly to the I/O Module using a PC, a power supply for the I/O Module and an RS-485/RS-232 converter.
  • Page 25 3. Click on Nexus Communicator Icon (located in a file on your PC) to open Nexus Communicator software. The Main screen for Nexus Communicator Software will appear on your screen. 4. Click the Connect Icon. The “Connect” screen will appear.
  • Page 26 I/O Module(s) connected to the PC. 10. Type a Command into the Command window. Click SEND. A response will return from the I/O Module that received the command. Example screens are shown below. Example commands are discussed in section 2.4.

  • Page 27: 3: Other Communication Functions Available

    Modules that can be accessed with the Tool Bar. A brief overview follows. Full details can be found in the Nexus Communicator User Manual. Nexus Programmer has the same functions and screens except for Log Viewer. Low Level Access (Tools Menu) is discussed in section 2.3.2.

  • Page 28: Example Commands

    2.4: Example Commands 2.4: Example Commands 2.4.1: Communication Overview 2.4.1: Communication Overview All I/Os are shipped pre-programmed with Baud Rates of 57600, Addresses and Transmit Delay Times. The Programmable Settings for the IO modules can be changed by writing new values to the Modbus Registers.

  • Page 29: 4: Changing The Unit Address, Baud Rate And Transmit Delay Time

    Example 2. To change the Baud Rate to 9600. Let's say the unit has an Address of 1 and is running at 57600 Baud Rate. Send the following data to the unit at 57600 Baud Rate. 01 06 B0 01 00 01 (DO NOT TYPE SPACES) 01: Unit Address 06: Function Code, Preset Single Register B0 01: Register for Baud Rate...
  • Page 30 Electro Industries/GaugeTech 2-16 Doc # E134-7-15 V1.01...

  • Page 31: Chapter 3: Modbus Protocol Overview

    Chapter 3 Chapter 3 Modbus Protocol Overview Modbus Protocol Overview 3.1: Communication Packets 3.1: Communication Packets Communication takes place between a Modbus Master and one or more Slaves. The Master initiates all communication by transmitting an information packet called the “request” to a specific Slave. The Slave replies with its own packet, called the “response”.

  • Page 32: Function Codes

    3.3: Function Codes 3.3: Function Codes A packet’s Function Code tells the addressed Slave what action to perform. The I/O modules support the following Modbus Function Codes: Table 3.1: Function Codes Function Code Description Read Holding Registers Preset Single Register Preset Multiple Registers 3.3.1: Function Code 03—...

  • Page 33: Data Starting Address

    3.3.2: Function Code 06— 3.3.2: Function Code 06 — Preset Single Register Preset Single Register This function allows a Master station to modify a single register in a Slave. The data registers are 16-bit (two byte) values transmitted high-ordered byte first, low-ordered byte second. In the following example, a Master device stores the value 0001H at Register 57346 in a Slave at address 01H.

  • Page 34: Crc (Error Checksum) Algorithm

    Table 3.4: Function Code 10 Example Master Packet Slave Packet Slave Address Slave Address Function Code Function Code Data Starting Address-Hi Data Starting Address-Hi Data Starting Address-Lo Data Starting Address-Lo 01H Number of Setpoints-Hi Number of Setpoints-Hi Number of Setpoints-Lo Number of Setpoints-Lo Byte Count CRC-Lo...

  • Page 35: Dead Time

    FOR n=1 to # of bytes in packet XOR nth data byte with the 16-bit register FOR bits_shifted = 1 to 8 SHIFT 1 bit to the right IF (bit shifted out EQUAL 1) XOR generator polynomial with the 16-bit register and store result in the 16-bit register END IF END FOR...
  • Page 36 In the following example, a Master Device requests a Slave at address 01H to transmit the value at Register 00256. The Slave replies with an error, indicating that it is busy. Table 3.6: Exception Response Example Master Packet Slave Packet Meaning Meaning Address...

  • Page 37: Chapter 4: Communication Data Formats

    Chapter 4 Chapter 4 Communication Data Formats Communication Data Formats 4.1: Type F1 Null Terminated ASCII String (00001 - 00072) 4.1: Type F1 Null Terminated ASCII String (00001 - 00072) Length: Depends on the reading. Each register contains two bytes. Each byte stands for an ASCII character. The printable portion of the string is terminated with a Null character (ASCII 00H).

  • Page 38: Type F3 Build Number (00075-00076)

    Addr (Dec) 00073 00074 Value 3030H 3134H Bytes ASCII ‘0’ ‘0’ ‘1’ ‘4’ Register “00” “14” String “0014” 4.3: Type F3 Build Number (00075 - 00076) 4.3: Type F3 Build Number (00075 - 00076) Length: 2 Registers (8 bytes) Range: 4,297,496,295 / 0.0.0.0 Unit: 1 build These registers together are a four byte unsigned integer.

  • Page 39: Type F4 Address (45057)

    4.4: Type F4 Address (45057) 4.4: Type F4 Address (45057) Length: 1 Register (2 Bytes) Range: 1 - 247 This register contains a 1 byte unsigned integer. The value of the high order byte is ignored. Example: Register 45057, Address, might contain the following data: Address (Decimal) 45057 Value...

  • Page 40: Type F6 Transmit Delay Time (45059)

    Example: Register 45058, Address, might contain the following data: Address (Decimal) 45058 Value 0003H Bytes (Hex) 1 Byte Unsigned Integer (Decimal) Baud Rate 19200 Baud 4.6: Type F6 Transmit Delay Time (45059) 4.6: Type F6 Transmit Delay Time (45059) Length: 1 Register (2 Bytes) Range: 2.55 sec / 0.00 sec Unit: 0.01 sec This register contains a 1 byte unsigned integer.

  • Page 41: Type F7 Device Status (65409)

    4.7: Type F7 Device Status (65409) 4.7: Type F7 Device Status (65409) Length: 1 Register (2 Bytes) This Register is a bit-mapped register containing Device Status information. The device is fully functional if all the bits are “0”. The presence of any “1” bit indicates some problem or operational state other than normal operation.

  • Page 42: Type F8 Device Reset (65410)

    Example: Register 65409, Device Status, might contain the following data: Addr (Dec) 65409 Value 8006H Bytes Bits Normal Invalid Cksm Meaning Disabled Setting Fail Normal Function is Disabled; Interpretation Programmable Settings contain invalid settings and failed the checksum. 4.8: Type F8 Device Reset (65410) 4.8: Type F8 Device Reset (65410) Length: 1 Register (2 Bytes) The format of this register does not matter.

  • Page 43: Type F10 Device Options (00077)

    4.10: Type F10 Device Options (00077) 4.10: Type F10 Device Options (00077) Length: 1 Register (2 Bytes) This register contains a 2 byte enumeration. The value refers to an enumerated list of choices, as follows: • 4 Channel Device • 8 Channel Device Example: Writing to Register 00077, Device Options, might contain data as follows:...
  • Page 44 Electro Industries/GaugeTech Doc #: E134-7-15 V1.01...

  • Page 45: Chapter 5: Operations And Default Mode

    5.1: Operations An I/O Module gathers inputs or produces outputs for a particular application to provide additional functionality to a Master. At the Master’s read or write request, the I/O Module reacts to the Master via Modbus Protocol. Normal Mode is the standard mode of operation for the I/O Modules. If all settings and configurations are correct and the hardware is working correctly, the I/O Module will continue to operate in Normal Mode.
  • Page 46 When operating in Default Mode, the following happens: The device runs a 30-second timer. This timer is reloaded with every valid request received. If the timer runs out, the device will reset. The commands used in Normal Mode will be ignored when received. Bits in the Device Status Registers reflect this state and the reason(s) for the state.

  • Page 47: Overview

    Chapter 6 Chapter 6 Analog Output Modules Analog Output Modules 6.1: Overview 6.1: Overview The Analog Transducer Signal Output Modules (0-1mA or 4-20mA) are available in either 4- or 8- channel configuration. Maximum registers per request, read or write, is 17 registers. The Modbus Map for the Analog Output I/O Modules is in Chapter 7.

  • Page 48: Normal Mode

    6.3: Normal Mode 6.3: Normal Mode Normal Mode is the same for the 0-1mA and the 4-20mA Analog Output Modules except for the number of processes performed by the modules. Both devices: 1. Accept new values through communication. 2. Output current loops scaled from previously accepted values. The 0-1mA module includes one more process in its Normal Mode: 3.

  • Page 49: 4: Registers For Internal Calculation

    6.3.5: Registers for Calibration 6.3.5: Registers for Calibration The following registers are used by the I/O Module for device calibration. This calibration is done in the factory, since it requires extremely high accuracy. Therefore, these registers will not be explained in this manual.
  • Page 50 Electro Industries/GaugeTech Doc # E134-7-15 V1.01...

  • Page 51: Chapter 7: Analog Output Modbus Register Maps (1Maon4, 1Maon8, 20Maon4, 20Maon8)

    7.1: Modbus Register Maps The Analog Output Modbus Register Maps begin on page 7-3. There are separate maps for the 0-1mA Analog Output Module I/O Module and for the 4-20mA Output Module. Maximum registers per request, read or write, is 17 registers.
  • Page 52 Electro Industries/Gauge Tech Doc # E 134-7-15 V1.01...
  • Page 53 0-1mA 4- and 8-Channel Analog Output Modbus Map Address Description Range Units Type R/W Notes Device Identification Block 00001-00008 Device Name 00009-00016 Firmware Variation String 1 00017-00024 Firmware Variation String 2 00025-00032 Firmware Variation String 3 00033-00040 Firmware Variation String 4 00041-00048 Firmware Variation String 5 00049-00056...
  • Page 54 0-1mA 4- and 8-Channel Analog Output Modbus Map Address Description Range Units Type R/W Notes 04130 Thermal Average A/D Value, Channel 2 +4095.875 / -4096.000 1/8 count A/D 04131 Thermal Average A/D Value, Channel 3 +4095.875 / -4096.000 1/8 count A/D 04132 Thermal Average A/D Value, Channel 4 +4095.875 / -4096.000...
  • Page 55 0-1mA 4- and 8-Channel Analog Output Modbus Map Address Description Range Units Type R/W Notes 45116 Scale Lo Percent, Channel 4 +327.67 % / - 327.68 % 0.01 % R/W 1 45117 Scale Lo Percent, Channel 5 +327.67 % / - 327.68 % 0.01 % R/W 1 45118...
  • Page 56 0-1mA 4- and 8-Channel Analog Output Modbus Map Address Description Range Units Type R/W Notes 57346 Test Output Device Status Block 65409 Device Status 65410 Device Reset 65535-65536 Device Serial Number 99999999 / 0 Electro Industries/GaugeTec Doc # E134-7-15 V1.01...
  • Page 57 4-20mA 4- and 8-Channel Analog Output Modbus Map Address Description Range Units Type R/W Notes Device Identification Block 00001-00008 Device Name 00009-00016 Firmware Variation String 1 00017-00024 Firmware Variation String 2 00025-00032 Firmware Variation String 3 00033-00040 Firmware Variation String 4 00041-00048 Firmware Variation String 5 00049-00056...
  • Page 58 4-20mA 4- and 8-Channel Analog Output Modbus Map Address Description Range Units Type R/W Notes 45099-45100 Scale Lo Value, Channel 6 +2,147,483,647 / -2,147,483,648 1 unit R/W 1 45101-45102 Scale Lo Value, Channel 7 +2,147,483,647 / -2,147,483,648 1 unit R/W 1 45103-45104 Scale Lo Value, Channel 8 +2,147,483,647 / -2,147,483,648...
  • Page 59 4-20mA 4- and 8-Channel Analog Output Modbus Map Address Description Range Units Type R/W Notes 65410 Device Reset 65535-65536 Device Serial Number 99999999 / 0 Electro Industries/GaugeTech Doc # E135-7-15 V1.01...

  • Page 60: Overview

    Chapter 8 Chapter 8 Analog Input Modules Analog Input Modules 8.1: Overview 8.1: Overview The Analog Input Modules are available in 8-channel configuration. The model numbers are listed in the table below. Maximum registers per request, read or write, is 17 registers. All inputs share a single common point.

  • Page 61: Normal Mode

    8.3: Normal Mode 8.3: Normal Mode In Normal Mode, the Input Module: 1. Reads and averages the A/D and adjusts values for process 2. 2. Calculates the percentage of Input Value. NOTE: The percentage value of the Input will be stored in Input Value registers (Registers 04097-04104) The device will operate with the following default parameters: Address...

  • Page 62: 2: Registers For Internal Calculation

    8.3.2: Registers for Internal Calculation 8.3.2: Registers for Internal Calculation The following registers are used by the I/O Module for internal calculation to calculate the percent- age of the Input values. Therefore, these registers will not be explained in this manual.
  • Page 63 Electro Industries/GaugeTech Doc # E134-7-15 V1.01...

  • Page 64: Modbus Register Map

    Chapter 9 Chapter 9 Analog Input Modbus Register Map Analog Input Modbus Register Map 9.1: Modbus Register Map 9.1: Modbus Register Map The Analog Input Modbus Register Map begins on the page 9-3. Maximum registers per request, read or write, is 17 registers. Columns See Chapter 4 for a detailed description of Communication Formats referred to in the the Register Map’s “Type”...
  • Page 65 Electro Industries/Gauge Tech Doc # E 134-7-15 V1.01...
  • Page 66 Analog Input Modbus Map (8AI1, 8AI2, 8AI3, 8AI4) Address Description Range Units Type R/W Notes Device Identification Block 00001-00008 Device Name 00009-00016 Firmware Variation String 1 00017-00024 Firmware Variation String 2 00025-00032 Firmware Variation String 3 00033-00040 Firmware Variation String 4 00041-00048 Firmware Variation String 5 00049-00056...
  • Page 67 Analog Input Modbus Map (8AI1, 8AI2, 8AI3, 8AI4) Address Description Range Units Type R/W Notes 04123 A/D Count Reference High +4095/-4095 1 count A/D 04124 A/D Count Reference Low +4095/-4095 1 count A/D Programmable Settings Block 45057 Address 1 - 247 R/W 1 45058 Baud Rate...
  • Page 68 Analog Input Modbus Map (8AI1, 8AI2, 8AI3, 8AI4) Address Description Range Units Type R/W Notes 57345 Calibration Mode Device Status Block 65409 Device Status 65410 Device Reset 65535-65536 Device Serial Number 99999999 / 0 Electro Industries/GaugeTech Doc # E134-7-15 V1.01...

  • Page 69: Chapter 10: Relay Output Modules

    The Relay Output Module consists of four Latching Relay Outputs. In Normal Mode, the device accepts commands to control the relays. The Modbus Map for the Relay Output I/O Module (4RO1) is in Chapter 11. 10.2: Relay Output Specifications 10.2: Relay Output Specifications...

  • Page 70: Normal Mode

    10.4: Normal Mode 10.4: Normal Mode Normal Mode consists of one process: 1. The device accepts new commands to control the relays. 10.4.1: Relay State 10.4.1: Relay State Register 04097 (0x01000) The following bits indicate each relay: Bit 0: Relay 1 Bit 1: Relay 2 Bit 2:...

  • Page 71: 3: Relay On/Off Timers

    10.4.3: Relay On/Off Timers 10.4.3: Relay On/Off Timers Registers 04100-04107 (0x01003 - 0x01003) The value in these registers will start to decrement upon receiving Pulse On/Off Commands. The unit of value in these registers is 0.01 second. The proper On/Off Timer values should be written before using Pulse On/Off Commands.
  • Page 72 Electro Industries/GaugeTech 10-4 Doc # E134-7-15 V1.01...

  • Page 73: Relay Output Register Map

    Chapter 11 Chapter 11 Relay Output Modbus Register Map Relay Output Modbus Register Map 11.1: Relay Output Modbus Register Map 11.1: Relay Output Modbus Register Map The Relay Output Modbus Register Map begins on page 11-3. Maximum registers per request, read or write, is 4 registers. Columns See Chapter 4 for a detailed description of Communication Formats referred to in the the Register Map’s “Type”...
  • Page 74 Electro Industries/Gauge Tech 11-2 Doc # E 134-7-15 V1.01...
  • Page 75 Digital Relay Output Modbus Map (4RO1) Address Description Range Units Type R/W Notes Device Identification Block 00001-00008 Device Name 00009-00016 Firmware Variation String 1 00017-00024 Firmware Variation String 2 00025-00032 Firmware Variation String 3 00033-00040 Firmware Variation String 4 00041-00048 Firmware Variation String 5 00049-00056 Firmware Variation String 6...

  • Page 76: Chapter 12: Kyz Pulse Output Modules

    Chapter 12 Chapter 12 KYZ Pulse Output Modules KYZ Pulse Output Modules 12.1: Overview 12.1: Overview The KYZ Pulse Output Modules have 4 KYZ Pulse Outputs and accept Read and Write Commands with at least 4 registers of data per command. The Modbus Map for the KYZ Pulse Output Modules is in Chapter 13.

  • Page 77: Communication

    12.3: Communication 12.3: Communication Maximum registers per request, read or write, is 4 registers. The device will operate with the following default parameters: Address 247 (F7H) Baud Rate 57600 Baud Transmit Delay Time 20 csec Certain situations will cause the device to operate with the above default parameters. See Chapter 5 for details of Default Mode.

  • Page 78: 1: Channel Last/Next Energy, Channels 1-4

    Operation Indicator (0000H = OK, 1000H = Problem) • Bit 1: 1 = EEPROM Failure • Bit 2: 1 = Checksum for Communications Settings bad • Bit 3: 1 = Checksum for Programmable Settings bad • Bit 4: 1 = 1 or more Communications Settings are invalid •...

  • Page 79: 5: Channel Rollover, Channels 1-4

    4,294,967,296 / 0. 12.4.5: Channel Rollover, Channels 1-4 12.4.5: Channel Rollover, Channels 1-4 Registers 45081-45096 (0x0B018-0x0B027) These registers contain the Energy Rollover Readings for each channel. The reading is an 8-byte value and the range is 18,446,744,073,709,551,615 / 0. These rollover values should be from the Master Device.
  • Page 80 Chapter 13 KYZ Pulse Outputs Modbus Register Map KYZ Pulse Outputs Modbus Register Map The Nexus Modbus Register Map begins on page 13-3. Columns See Chapter 4 for a detailed description of Communication Formats referred to in the the Register Map’s “Type”...
  • Page 81 Electro Industries/Gauge Tech 13-2 Doc # E 134-7-15 V1.01...
  • Page 82 KYZ Pulse Outputs Modbus Map Address Description Range Units Type R/W Notes Device Identification Block 00001-00008 Device Name 00009-00016 Firmware Variation String 1 00017-00024 Firmware Variation String 2 00025-00032 Firmware Variation String 3 00033-00040 Firmware Variation String 4 00041-00048 Firmware Variation String 5 00049-00056 Firmware Variation String 6 00057-00064...
  • Page 83 KYZ Pulse Outputs Modbus Map Address Description Range Units Type R/W Notes 45099 Channel 3 Minimum Pulse Width 45100 Channel 4 Minimum Pulse Width Action Block 57345 Reset All Channels 57346 Reset Channel 1 57347 Reset Channel 2 57348 Reset Channel 3 57349 Reset Channel 4 Device Status Block...

  • Page 84: Chapter 14: Digital Status Input Modules

    Chapter 14 Chapter 14 Digital Status Input Modules Digital Status Input Modules 14.1: Overview 14.1: Overview The Digital Status Input Module is used for either additional status detect or for accumulating pulses from external equipment, such as power meters, water meters, etc. The Modbus Map for the Digital Status Input Module is in Chapter 15.

  • Page 85: Normal Mode

    14.4: Normal Mode 14.4: Normal Mode The device is polling the inputs at 100 Hz (once every 10 msec), debouncing the inputs and incrementing the Transition Accumulators for each channel as appropriate. The inputs are represented by Channel 1 in the LSB through Channel 8 in the MSB of the low order byte of the register.

  • Page 86: 3: Channel Rollover, Channels 1-8

    14.4.3: Channel Rollover, Channels 1-8 14.4.3: Channel Rollover, Channels 1-8 Registers 45073-45088 (0x0B010-0x0B01F) Rollover Registers keep the largest value for each channel that Transition Accumulators can obtain. A rollover will occur according to the value written into the Rollover Settings. Rollover Settings are cleared by communication commands to the Programmable Settings Block.
  • Page 87 Electro Industries/GaugeTech 14-4 Doc # E134-7-15 V1.01...

  • Page 88: Digital Status Input Register Map

    Digital Status Input Modbus Register Map Digital Status Input Modbus Register Map The Modbus Register Map for the Digital Status Input I/O Module (8DI1) begins on the page 15-3. Columns See Chapter 4 for a detailed description of Communication Formats referred to in the the Register Map’s “Type”...
  • Page 89 Electro Industries/Gauge Tech 15-2 Doc # E 134-7-15 V1.01...
  • Page 90 Digital Input Modbus Map (8DI1) Address Description Range Units Type R/W Notes Device Identification Block 00001-00008 Device Name 00009-00016 Firmware Variation String 1 00017-00024 Firmware Variation String 2 00025-00032 Firmware Variation String 3 00033-00040 Firmware Variation String 4 00041-00048 Firmware Variation String 5 00049-00056 Firmware Variation String 6 00057-00064...
  • Page 91 Digital Input Modbus Map (8DI1) Address Description Range Units Type R/W Notes 57349 Reset Channel 4 Transition Accumulation 4,294,927,295 / 0 57350 Reset Channel 5 Transition Accumulation 4,294,927,295 / 0 57351 Reset Channel 6 Transition Accumulation 4,294,927,295 / 0 57352 Reset Channel 7 Transition Accumulation 4,294,927,295 / 0 57353...

  • Page 92: Appendix A Glossary

    Appendix A Appendix A Glossary Glossary Address: The Device Address used for Modbus Communication. Valid values are between 1 and 247, inclusive. Average (Current): When applied to current values (amps) the average is a calculated value that corresponds to the thermal average over a specified time interval. The interval is specified by the user in the meter profile.
  • Page 93 Error Code (Modbus communication) transmitted in a packet from the Slave to the Master if the Slave has encountered an invalid command or other problem. Form: Wiring and Hookup configuration for the Nexus 1262/1272. Harmonics: Measuring values of the fundamental current and voltage and percent of the fundamental.
  • Page 94 Energy indicator on the face of the Nexus 1252; pulses are generated per the programmed K e value. Infrared Test Pulse: Energy indicator located on the upper left side of the face of the Nexus 1262 /1272 meter; pulses are generated per the programmed K e value. Integer: Any of the natural numbers, the negatives of those numbers or zero.
  • Page 95 Non-volatile Random Access Memory is able to keep the stored values in memory even during the loss of circuit or control power. High speed NVRAM is used in the Nexus to gather measured information and to insure that no information is lost.
  • Page 96 1200 bits per second to 57,600 bits per second. RS-232 communication can be accomplished using the Optical port on the face of the 1262/1272 Nexus. RS-485: A type of serial network connection that connects two or more devices to enable communication between the devices.
  • Page 97 THD: Total Harmonic Distortion is the combined effect of all harmonics measured in a voltage or current. The THD number is expressed as a percent of the fundamental. For example, a 3% THD indicates that the magnitude of all harmonic distortion measured equals 3% of the magnitude of the fundamental 60Hz quantity.

Table of Contents