Alpha Cordex CXC HP User guide

Brand: Alpha

Model: Cordex CXC HP

Type: User guide

Your Power Solutions Partner

Cordex HP Controller

Modbus Integrator Guide

Part # 0350114-J0

Effective: 01/2016

Cordex HP Controller: Modbus Integrator Guide

NOTE: Photographs contained in this manual are for illustrative purposes only. These photographs may

not match your installation.

NOTE: Operator is cautioned to review the drawings and illustrations contained in this manual before

proceeding. If there are questions regarding the safe operation of this powering system, contact Alpha

Technologies or your nearest Alpha representative.

NOTE: Alpha shall not be held liable for any damage or injury involving its enclosures, power supplies,

generators, batteries, or other hardware if used or operated in any manner or subject to any condition

inconsistent with its intended purpose, or if installed or operated in an unapproved manner, or improp-

erly maintained.

of Alpha Technologies.

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or transmitted in any form or by any means manual, electric, electronic, electromechanical, chemical,

optical, or other-wise without prior explicit written permission from Alpha Technologies.

This document, the software it describes, and the information and know-how they contain constitute the

proprietary, confidential and valuable trade secret information of Alpha Technologies, and may not be

used for any unauthorized purpose, or disclosed to others without the prior written permission of Alpha

Technologies.

The material contained in this document is for information only and is subject to change without notice.

While reasonable efforts have been made in the preparation of this document to assure its accuracy,

Alpha Technologies assumes no liability resulting from errors or omissions in this document, or from the

use of the information contained herein. Alpha Technologies reserves the right to make changes in the

product design without reservation and without notification to its users.

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TABLE OF CONTENTS

1INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Purpose and Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Knowledge and Permissions . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2USING MODBUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Modbus Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Modbus Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

DC System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Known Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3GLOSSARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

LIST OF FIGURES

Figure 1: Enabling Modbus on the CXC HP . . . . . . . . . . . . . . . . . . . . . . 3

Figure 2: Modbus Connection Configuration . . . . . . . . . . . . . . . . . . . . . . 4

Figure 3: Data Retrieving Configuration . . . . . . . . . . . . . . . . . . . . . . . . 4

iii

LIST OF TABLES

Table 1: Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Table 2: Modbus Device IDs for the CXC HP . . . . . . . . . . . . . . . . . . . . . 5

Table 3: Output Coils (0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Table 4: Input Contacts (1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 5: Input Registers (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 6: Holding (Output) Registers (4) . . . . . . . . . . . . . . . . . . . . . . . . 6

0350114-J0 Rev B Page 1

1 Introduction

1.1 Overview

The purpose of this manual is to provide information on how to use Alpha Technologies Cordex™ High

Performance System Controller (CXC HP) and software along with Modbus. This guide contains infor-

mation on setup, and operation of Modbus using Alpha’s CXC HP controller.

1.2 Purpose and Audience

The audience for this manual are engineers, technicians, IT professionals and network operation

personnel who are tasked with remote monitoring of the power system using Modbus. They should be

well versed in the Modbus protocol as well as the network management, remote monitoring or network

operations center software and tools that will be used to monitor the controller.

1.3 Knowledge and Permissions

It is assumed that you have a good working knowledge of, and access to, the following:

• Modbus monitoring software and tools

• Network and port monitoring tools like Firebug and Wireshark

• Ethernet cables and TCP/IP settings needed to connect your computer to the CXC HP controller

• Current version of Chrome, Firefox, Internet Explorer (9+) or Safari

• Power system that the controller currently controls

• Controller admin password, and the appropriate level of permissions

0350114-J0 Rev B Page 2

0350114-J0 Rev B Page 3

2 Using Modbus

2.1 Modbus Setup

To setup Modbus TCP/IP on the CXC HP controller, you need to enable the Modbus client via the web

interface.

1. Go to Controller > Configure Controller > Communications > Modbus to enable Modbus, and

then select the byte order.

Figure 1: Enabling Modbus on the CXC HP

Client Application Setup

Client applications connect to the controller through TCP/IP via a Modbus client. The standard,

non-configurable Modbus service port 502 is used. The sample application used for following figure, is

Modscan32 available via: WinTech Software Design - www.win-tech.com.

Table 1: Configuration

Name Description

Modbus Agent Turns the Modbus Agent on or off. To complete

changing this configuration, a soft reset is

required.

The default configuration is Disabled.

Byte Order The order of 16-bit halves of the 32-bit data form.

All numeric data are represented as 32-bit

floating point values. Two address spaces are

used for each data value presented through

Modbus.

0350114-J0 Rev B Page 4

Figure 2: Modbus Connection Configuration

Once the connection is made, data can be retrieved using proper indexing values as shown in Figure 3.

Figure 3: Data Retrieving Configuration

Device ID: Device ID of the data of interest.

Address: Starting address of the data block to read.

Length: The length of the data block to read.

Modbus Point Type: The register channel of the data of interest. The example shows Command code

04 - Input Register (read-only data).

0350114-J0 Rev B Page 5

NOTE: The data shown have “unknown” values represented as the floating point value of 0xFFFFFFFF

(-1.#QB). Non-available data or data addresses that are not populated display as 0.

2.2 Modbus Reference

The design of the Modbus Agent for the CXC HP is to use Device IDs to represent the various inven-

tory items in the controller. Currently, only the DC System has been added to the Modbus Agent. At

this time, the Device ID for the DC System is fixed. It is likely that the device IDs will need to be user

configurable as the Modbus Agent evolves.

Following Modbus standards, the CXC HP Modbus Agent also supports:

• Up to 256 Device IDs numbered: 0 - 255

• Up to four data channels (tables) per Device ID labeled: Coil Status (0), Input Status (1), Input

• Up to 65,536 data values (rows) per data channel (table) numbered: 0 - 65535

• All non-single bit data are represented in 32-bit form. Two 16-bit entries/rows are required for

each data point to represent the 32-bit data form

• All numeric values are represented as 32-bit floating point values

• Unknown or invalid numerical representation are 0xFFFFFFFF

2.3 DC System

This section documents the Modbus data values available for the DC System (Device ID: 250). The

standard defines that there should be four tables. Alpha only uses one, the Input Registers, the others

display as empty.

Output Coils are used to control and represent things like Relays. Output Coils are read-write.

Input Contacts are used to represent things like Alarm Status or Digital Inputs. Input Contacts are

read-only.

Table 2: Modbus Device IDs for the CXC HP

Inventory Item Modbus Device ID on the CXC HP

DC System 250

Table 3: Output Coils (0)

Address (Hex) Name

0350114-J0 Rev B Page 6

Input Registers are used to represent measured or complex data values like analog inputs, times, dates

or states. Input Registers are read-only.

Output Registers used to represent configuration data like a target float voltage or an alarm threshold.

Output Registers are read-write.

Table 4: Input Contacts (1)

Address (Hex) Name

Table 5: Input Registers (3)

Address (Hex) Name

0001 System Voltage

0003 Total Load Current

0005 Total Capacity Installed in Amps

0007 System Mode - (0) Unknown, (1) No Battery, (2) System

Off, (3) Battery on Discharge, (4) Battery Conditioning,

(5) Battery Charging, (6) Battery on Discharge Test

0009 Average Rectifier AC Input Voltage

000B Estimated Battery Runtime

000D Last Discharge Duration

000F Output Voltage Low Alarm Threshold

0011 Output Voltage High Alarm Threshold

0013 Battery Runtime Low Alarm Threshold

0015 AC Mains Voltage Low Alarm Threshold

0017 AC Mains Voltage Hight Alarm Threshold

Table 6: Holding (Output) Registers (4)

Address (Hex) Name

0350114-J0 Rev B Page 7

2.4 Known Issues

Items listed in this section are known issues or behaviors that are not obvious when using the CXC HP

controller and may change in the future.

• Live Data Updates: The data published through Modbus are linked in real time to the system built

and configured in the CXC HP controller. When these items are removed from the controller, the

Modbus client will lose the internal link to them and will stop updating the published data until a

new system is created, configured and the controller is reset.

0350114-J0 Rev B Page 8

0350114-J0 Rev B Page 9

3 Glossary

Alternating Current

ADIO

Analog-digital input-output

ALCO

Alarm cutoff

ATM

Asynchronous Transfer Mode; e,g. ATM cell

BCT

Battery current termination

BOD

Battery on discharge

Battery test (or test mode)

CAN

Controller Area Network

CEMF

Counter electro-motive force

Cordex series; e.g. CXC for Cordex™ System Controller

Direct current

DOD

Depth of discharge

Equalize (mode or voltage)

Float (mode or voltage)

GUI

Graphical User Interface

HVA

High voltage alarm

HVSD

High voltage shutdown

ICMP

Internet control message protocol

Internet Protocol

LCD

Liquid Crystal Display

LED

Light Emitting Diode

0350114-J0 Rev B Page 10

LVA

Low voltage alarm

LVC

Low voltage connect

LVD

Low voltage disconnect

MAC

Media Access Control; e.g. MAC address

MIB

Management Information Base

MUX

Multiplexer

OCP

Over Current Protection

OLED

Organic LED, in-shelf controller display

OVP

Over-voltage protection

PDA

Personal Digital Assistant

PPP

Point to Point Protocol

RAS

Remote access server

SCI

Serial Communication Interface

SNMP

Simple Network Management Protocol

TCP/IP

Transmission Control Protocol / Internet Protocol

Trap

Event notification

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Alpha Cordex CXC HP User guide

Alpha Cordex CXC HP User guide

Alpha Cordex CXC HP User guide

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