This Specification Is Liable to Change at Any Time. Please Check with Mitsubishi Electric

SPECIFICATION

For the

NetCom

This specification is liable to change at any time. Please check with Mitsubishi Electric that your copy is up to date

1.OVERVIEW

This document describes Mitsubishi Electric’s NetCom SNMP adapter that is compatible with all of Mitsubishi Electric’s UPS systems. The NetCom is an Ethernet-compatible network interface device that can be supplied as a internally mounted device, or as a separate unit in its own enclosure. The NetCom supports both the Mitsubishi and SEC protocols and the product is compatible with a variety of UPS devices to provide RS-232 to SNMP gateway capability as well as http web browser support.

The NetCom can be attached to a UPS or other device to allow a network supervisor to monitor and control the UPS via the SNMP protocol (Simple Network management protocol) over TCP/IP networks. The product can be view under such popular network management platforms as HP OpenView, IBM NetView/6000, Novell ManageWise (Novell NMS), SunNet Manager, etc.

The NetCom has a 10BASE-T Ethernet interface built in. There is one RS-232 serial port. During installation, this serial port is connected to a computer or server to assign and configuration settings of the NetCom. During normal operation, the RS232 is connected to a UPS (or other serial device)for monitoring and control. NetCom monitors the serial line for a particular character string in order to switch in and out of configuration mode.

Four LED indicators show the status of the SNMP Adapter, green for power and RS232, network link status, red for an error condition within the SNMP Adapter itself.

1.1How the NetCom SNMP Adapter Works

The NetCom SNMP Adapter brings UPS and other serial devices within the range of SNMP management. The SNMP Network Management Station can request information about the device or send commands to the device through the link provided by the NetCom.

The NetCom also sends “trap” messages to the management station regarding system conditions of the UPS system and the device in which it is installed. Traps may be filtered according to urgency level.

The NetCom MIB (Management Information Base) is provided on a diskette for easy loading to a SNMP compliant management station, such as HP OpenView, IBM NetView/6000, etc. Objects in the MIB can be easily managed by these management stations.

2.DESCRIPTION

The NetCom is a single board device with microprocessor, network interface hardware, voltage regulator, flash EPROM memory, RAM, a single serial port, analogue port and limited I/O.

2.1Dimensions

Layout and dimensions for the NetCom are shown in Figure 1.

2.2System Requirements

The NetCom requires the following network configuration:

»An Ethernet networking environment

»An SNMP-based management station, such as:

-HP OpenView

-IBM NetView/6000

-SUN SunNet Manager

-Netware Management System

»A PC with a terminal emulation package or a dumb terminal, for configuring the NetCom.

»Alternatively a PC with a browser installed such as Internet Explorer can be used for configuration across the web.

2.3Hardware Interface Requirements

The NetCom TH requires power and communications signals from the device in which it is installed. The following definition applies to the D9 port 1 used for RS232 communications indicated in Figure 1:

Pin # / Name / Description
1 / DCD / Data Carrier Detect
2 / RXD / Receive.
3 / TXD / Transmit.
4 / DTR / Data Terminal Ready
5 / GND / Ground
6 / DSR / Data Set Ready
7 / RTS / Request To Send
8 / CTS / Clear To Send
9 / RI / Ring Indicator

The following definition applies to the D9 port 2 used for temp/humidity communications indicated in Figure 1:

Pin # / Name / Description
1 / DCD / Data Carrier Detect
2 / RXD / Receive.
3 / TXD / Transmit.
4 / DTR / Data Terminal Ready
5 / GND / Ground
6 / VCC +5v / 5 volt drive for Analogue input
7 / Analogue In / Temperature Input
8 / GND / Ground
9 / Analogue In / Humidity Input

Note

NetCom does not use TTL level signaling (0v - +5v) for outside communications.

2.3.1General

CPU / Intel 386
ROM / 512 K RAM arranged 256k by 16
RAM / 512 K RAM arranged 256k by 16
Network controller / NE 2000 compatible
Input Voltage / +5 volt direct current
Normal power usage / 300 mA
Maximum power usage / 400 mA
Input Protection / Polyfuse
Operating temperature / 0 ~ 40°c
Operating humidity / 5 ~ 90%
Storage temperature / -10 ~ 70°c
storage humidity / 5 ~ 100%

3.Configuration

The NetCom must be configured prior to use with your Network Management Software.

3.1NetCom Network Interface Settings

3.1.110BaseT Connectors

The NetCom network interface is for use on 10BaseT ethernet.

3.1.2Configuration Session

For configuration, the adapter is temporarily connected to a PC with a terminal emulation package, or to a dumb terminal. Configuration settings are made through the terminal, and stored in NVRAM in the NetCom.

After configuration, the NetCom is disconnected from the PC (or dumb terminal) and connected to the UPS and to the network.

Thereafter, configuration settings may be adjusted at any time via web browser.

4.Management Information Base

The NetCom comes with a standard Management Information Base (MIB) diskette that defines the SNMP variables available to the Network Administrator. This MIB varies from device to device. The NetCom SNMP Adapter solution brings UPS and other devices systems within the range of SNMP management through these three basic components:

4.1NetCom Adapter

This is the physical box, with connectors for linking to the UPS, the Ethernet network, and the power adapter. Inside the NetCom runs the NetCom SNMP Adapter Program, described next.

4.2NetCom Adapter Program

The NetCom SNMP Adapter Program runs inside the NetCom SNMP Adapter. It responds to standard SNMP commands to report on UPS configuration and conditions. The NetCom SNMP Adapter will send traps at preset severity levels to specified SNMP management stations.

4.3The NetCom SNMP MIB

This is the MIB (Management Information Base) that is loaded onto each SNMP management station that will monitor the UPSs served by NetCom SNMP Adapters. The MIB determines what UPS or device parameters can be monitored and controlled through SNMP "get" and "set" commands.

The MIB definition is contained on two floppy disks. The first is in DOS format for use with an IBM PC or compatible running MS-DOS or OS/2. The second disk contains the MIB in tar format for Unix platforms.

5. APPROVALS

CE Approval-The NetCom has class A CE Approval

NOTES ON TEXT

Please note that the NetCom adapter has been principally designed for use with an UPS, however it can be used with any serial device such as an Air Conditioning unit.

NetCom Specification (08/01/02)