EMS CG-ARM7, CG-ARMD User Manual

CAN/CAN-Gateway

CG-ARM7/RMD

User Manual

EMS

THOMAS WÜNSCHE

Sonnenhang 3
D-85304 Ilmmünster
Tel [phone]
Fax [phone]

.

User manual CG-ARM7/ RMD

Document version: 2.00
Documentation date: June 22nd, 2005

No part of this document or the software described herein may
be reproduced in any form without prior written agreement
from EMS Dr. Thomas Wünsche.

For technical assistance please contact:

EMS Dr. Thomas Wünsche
Sonnenhang 3

D-85304 Ilmmünster

Tel. [phone]
Fax [phone]

Our products are continuously improved. Due to this fact
specifications may be changed at any time and without
announcement.

WARNING: EMS hardware and software may not be

used in applications where damage to life,
health or private property may result from
failures in or caused by these components.

CAN/CAN - Gateway CG-ARM7/RMD

ii User Manual

Table of contents

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

1.1 Features .....................1

1.2 General description................1

1.3 Ordering information ...............1

2 Handling .....................2

2.1 Connection ....................2

2.2 Operation .....................2

2.3 Configuration ...................2

2.3.1 Configuration file .................3

2.3.2 Programming the device .............9

2.4 Display .....................12

3 Technical specifications............14

3.1 Pin assignment .................14

3.2 Limiting values .................15

3.3 Nominal values.................15

4 Appendix ....................16

4.1 Configuration file sample ............16

4.2 Standard baudrates ...............17

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User Manual iii

1 Overview

1.1 Features

• Connection of two physically separated

CAN networks

•

Filtering and mapping of identifiers

•

Bus activity displayed by LED

•

Gateway configuration via RS232 or CAN

•

Wiring using a multiway connector

1.2 General description

The CAN/CAN gateway CG-ARM7 connects
two physically divided CAN networks. The ca­pability of having individual baudrates on both
segments, enables routing between them.

The filtering of single identifiers or ranges of
identifiers lessens the busload. The mapping
of single or ranges of identifiers qualifies
CG-ARM7 to be used under difficult higher
level protocol conditions.

The device is configured via serial interface or
via CAN network. Due to the intuitive structure
of the configuration file in ASCII format,
programming and administration is very easy.

1.3 Ordering information

12-20-401-10 CG-ARM7/RMD

CG-ARM7/RMD CAN/CAN - Gateway

User Manual 1

2 Handling

2.1 Connection

The CG-ARM7 possesses a multiway connec­tor for flexible wiring of the CAN interfaces and
the power supply. The RS232 interface on the
device is used for programming and for the
output of diagnostic information. For normal
operation it is not required.

The connector assignment of the multiway
connector and the RS232 interface is located
in chapter “3.1 Pin assignment” in this manual
or on your devices front panel.

2.2 Operation

To start up the gateway just connect the power
supply, the device starts automatically. As
soon as the automatic diagnostics is comple­ted successfully, the green power LED lites up
permantly.

Important note: Ex factory the device offers
no configuration and must be configured befo­re it is first run. Configuration instructions for
the gateway are located in chapter “2.3 Confi­guration”.

2.3 Configuration

The gateway configuration process consists of
two steps:

•

Creating a configuration file

CAN/CAN - Gateway CG-ARM7/RMD

2 User Manual

•

Storing the configuration file into the
gateway

2.3.1 Configuration file

The configuration file is a text file with the ex­tension *.gcf. This file holds all data needed by
the gateway for operation. A complete sample
configuration is located in chapter “4.1 Confi­guration file”.

The values can either be entered in decimal or
hexadecimal notation. Using the hexadecimal
notation, put the character “x” directly before
the particular value.

There are two types of parameters, general
parameters and routing settings. General
parameters include operating information for
the gateway. Routing settings are used for
mapping and filtering of identifiers.

Some parameters are optional. If they are not
defined, the gateway uses default settings.

Simultaneous programming of several devices
is not possible. It must be guaranteed, that
each device can be clearly identified.

In the following all parameters are listed and
described.

# comment

The configuration file can be provided with
comments. Comments are prefaced with the
character “#” and they end with the particular
line.

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User Manual 3

Example:

# 1st comment
key = value # 2nd comment

version

version

The gateway requires a version number to
identify the programmed configuration. The
version number for the CG-ARM7 standard
version is 1. This key must exist in each confi­guration file.

Important: The version is not the version of
the configuration! The version display what
kind of configuration is be loaded!

Example:

version = 1

btr bit timing

The bit timing key indicates the speed of the
particular CAN channel. BTR1 indicates the
baud rate for CAN channel 1, BTR2 the baud­rate for CAN channel 2. Both keys must exist
in each configuration file.

This keys are directly related to the CANBTR
registers of the used controller LPC2119. This
allows most flexible customization of the baud­rate settings. The basic can clock is 48 MHz.

Example:

# CAN channel 1: 1Mbit/s
btr1 = x00140005
# CAN channel 2: 500KBit/s
btr2 = x001C0005

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