Equinox Systems | RS232-RS485 | User guide | Equinox Systems RS232-RS485 User guide

Equinox Systems RS232-RS485 User guide
User Guide
(Version 1.02)
Contents
Copyright Information ............................................................................................................................ii
Equinox Warranty Information.............................................................................................................iii
Electromagnetic Compatibility (EMC) Compliance ...........................................................................v
Technical Support .................................................................................................................................vi
Associated Product Documentation ..................................................................................................vii
1.0 Overview ...........................................................................................................................................1
1.1 System Contents .........................................................................................................................1
2.0 RS232-RS485 Convertor End Panels ..........................................................................................2
2.1 RS-232 to RS-485 Status LED Indicators ...............................................................................3
2.2 Input Power Supply Requirements ...........................................................................................3
2.4 J2 & J4 Isolated RS-485 Connectors .......................................................................................5
3.0 PRO101 – Multi-Channel RS-485 Operation ..............................................................................6
3.1 Overview .......................................................................................................................................6
3.2 PRO101 Hardware Installation Instructions ............................................................................7
4.0 PRO104 – 4 Channel Eurocard Rack Production ISP System ................................................8
4.1 Overview .......................................................................................................................................8
4.2 PRO104/108 Hardware Installation Instructions .....................................................................9
RS232-RS485 Convertor Manual V1.02 28/06/01
i
Copyright Information
Information in this document is subject to change without notice and does not represent a
commitment on the part of the manufacturer. The software described in this document is
furnished under license agreement or nondisclosure agreement and may be used or copied
only in accordance with the terms of the agreement.
It is against the law to copy the software on any medium except as specifically allowed in the
license or nondisclosure agreement.
The purchaser may make one copy of the software for backup purposes. No part of this
manual may be reproduced or transmitted in any form or by any means, electronic,
mechanical, including photocopying, recording, or information retrieval systems, for any
purpose other than for the purchaser’s personal use, without written permission.
© 2001 Copyright Equinox Technologies UK Limited. All rights reserved.
AtmelTM and AVR TM are trademarks of the Atmel Corporation
Microsoft, MS-DOS, WindowsTM and Windows 95TM are registered trademarks of the Microsoft
Corporation
IBM, PC and PS/2 are registered trademarks of International Business Machines Corporation
Intel, MCS 51, ASM-51 and PL/M-51 are registered trademarks of the Intel Corporation
Every effort was made to ensure accuracy in this manual and to give appropriate credit to persons,
companies and trademarks referenced herein.
Equinox guarantees that its products will be free from defects of material and workmanship
under normal use and service, and these products will perform to current specifications in
accordance with, and subject to, the Company’s standard warranty which is detailed in
Equinox’s Purchase Order Acknowledgment.
ii
RS232-RS485 Convertor Manual V1.02 28/06/01
Equinox Warranty Information
This product is guaranteed by Equinox Technologies UK Limited for a period of 12 months (1
year) after the date of purchase against defects due to faulty workmanship or materials. One
guarantee covers both parts and labour. Service under the guarantee is only provided upon
presentation of reasonable evidence that the date of the claim is within the guarantee period
(e.g. completed registration/guarantee card or a purchase receipt).
The guarantee is not valid if the defect is due to accidental damage, misuse or neglect and in
the case of alterations or repair carried out by unauthorised persons. A number of exceptions
to the warranty are listed in the ‘Exceptions to warranty’ section below. Service (during and
after guarantee period) is available in all countries where the product is distributed by
Equinox Technologies UK Limited.
Exceptions to warranty
i.
Over-voltage damage
This warranty does not cover damage to the programmer due to voltages beyond the
specified voltage limits being applied to the ‘DC Power Input’ or the ‘Target Connector’.
The user must ensure that sufficient care is taken to avoid over-voltage and static
conditions on any of the ‘Target Connector’ I/O pins.
ii.
Over-current damage
This warranty does not cover damage to the programmer due to excessive current being
drawn from the programmer power supply. The user must ensure that there is sufficient
over-current protection within the test fixture to protect against short circuit loads.
iii. Short-circuit damage
This warranty does not cover damage to the programmer due to short-circuit loads being
placed across programmer I/O lines.
Fixed price repair service
Equinox offer a fixed price repair service for the PPM programmer. Please contact Equinox
directly for further information.
Disclaimer
Whilst every effort has been made to ensure that programming algorithms are correct at the
time of their release, it is always possible that programming problems may be encountered,
especially when new devices and their associated algorithms are initially released. It is
Equinox’s Company Policy to endeavour to rectify any programming issues as quickly as
possible after a validated fa ult report is received.
It is recommended that high-volume users always validate that a sample of a devices has
been programmed correctly, before programming a large batch. Equinox Technologies UK
Ltd. can not be held responsible for any third party claims which arise out of the use of this
programmer including ‘consequential loss’ and ‘loss of profit’.
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Equinox Technologies UK Ltd. can not be held responsible for any programming problems
which are ‘out of our control’. This type of problem is usually listed in the ‘Errata Sheet’ for the
particular device being programmed and is available from the silicon vendor.
Information contained in this manual is for guidance purposes only and is subject to change.
E&OE.
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RS232-RS485 Convertor Manual V1.02 28/06/01
Electromagnetic Compatibility (EMC)
Compliance
The ‘RS-232 to RS-485 Convertor’ is a CE Approved Product. It is designed for use in an
ESD controlled environment i.e. development or production. This means, therefore, that the
user must ensure that there is no possibility of damage from electrostatic discharge (ESD).
Since the devices and equipment to which this product is likely to be connected may well
themselves be susceptible to ESD, this should not pose any difficulty.
For example, if you are handling microcontrollers and EEPROMS etc. then you will already
be used to appropriate precautions, such as the use of anti-static mats, wrist straps and so
on. You should treat your ‘RS-232 to RS-485 Convertor’ with the same care as you would
these type of device. Always ensure that you are not yourself carrying a static charge before
handling the product. Wearing an earthed anti-static wrist strap is recommended.
Equinox have taken great care in designing this product to be compliant with the European
EMC directive. When using the equipment be sure to follow the instructions provided.
Although RF emissions are within prescribed limits, care should be taken if you are using the
product near to sensitive apparatus. If you experience any difficulty please refer to Equinox
technical support.
ESD Points to remember
•
Work in a static-free environment.
•
Wear an earthed wrist strap when handling either the programmer
and/or any programmable device.
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Technical Support
It is often the case that users experience problems when installing or using a product for the
first time. Equinox are unable to answer technical support questions about this product or its
use by telephone.
If you have a technical support problem, please consult the following list for help:
?
Manual
?
On-line help
Press <F1> for help at any time.
The help system is context-sensitive. Simply press <F1> on any error message and the
Possible causes of the error should be listed. This help system is updated on a regular
basis. Please see software update details for information on keeping up -to-date with
software revisions.
?
Internet Web Site
Equinox have setup an AVR™ microcontroller support page on our web site. This page is
designed to provide up-to date information on all issues concerning both AVR™
microcontrollers and support tools.
The microcontroller support page can be found at: www.equinox-tech.com
?
E-mail
Please e-mail any technical support questions about this product to:
support@equinox-tech.com
Equinox will try our best to answer your questions about this product as quickly as
possible. However, we cannot promise an immediate reply. Please consult our web site
for new software updates as the problem that you are enquiring about may have already
been fixed in a new version.
?
Fax
Please fax any technical support questions about this product to: +44 (0) 1204 535555
Equinox will try our best to answer your questions about this product as quickly as
possible. However, we cannot promise an immediate reply. Please consult our web site
for new software updates as the problem that you are enquiring about may have already
been fixed in a new version.
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RS232-RS485 Convertor Manual V1.02 28/06/01
Associated Product Documentation
This manual provides a detailed description of the ‘RS-232 to RS-485 Convertor’ hardware
only. For detailed information about the systems in which this module is used and the
associated hardware modules and software support products, please refer to the sources of
information listed in the table below.
Hardware:
Product
Documentation
PRO101 Programming System
Overview \ Getting Started Manual
PRO104/108 Programming
System
Overview \ Getting Started Manual
PPM Module
Reference Manual
PPM Firmware Update
Instructions
User Manual
ISP Interface Module
Reference Manual
RS-232 to RS-485 Convertor
User Manual
ISP Connections for Atmel AVR
and AT89S Microcontrollers
Please refer to separate Application Articles for each device family.
Software:
EQTools
Installation and Getting Started Guide
EQTools
Help file
ISP-PRO
Installation and User Manual
EQTools/ISP-PRO – Error
Messages
Reference Manual
- Updated on a regular basis – please download the latest version
from our Web Site.
Labview – Remote Application
Control
User Manual
Describes how to control the PPM using a custom Labview (from
National Instruments) application.
Remote Application Control
User Manual
Describes how to control the PPM using a custom Remote
Application written in e.g. Visual Basic, C++, C Builder, Delphi etc.
Downloading up-to-date documentation and software:
In line with our policy of continuous improvement, the software and associated
documentation for this product are updated on a regular basis. Please refer to the ‘ISP
Support Page’ at www.equinox-tech.com/isp.htm for the most up-to-date information for this
product.
RS232-RS485 Convertor Manual V1.02 28/06/01
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1.0 Overview
The RS-232 to RS-485 Convertor module converts RS-232 levels from a PC COM port to
RS-485 levels suitable for interfacing with the Equinox PRO101, PRO104 and PRO108
Production ISP programmers. The module provides an optical isolation barrier between the
PC COM port and the RS-485 bus which serves to protect the PC from ESD damage.
1.1 System Contents
The RS-232 to RS-485 module package should contain the following items:
Quantity Item description
1
RS232 – RS485 Convertor Module
1
Mains – DC Switchmode Power Supply Adaptor
Order code:
RS485-C1(UK)
RS485-C1(EU)
RS485-C1(US)
RS485-C1(AS)
Mains Input Voltage & plug type (Vrms):
UK 3-pin 240V @ 50Hz
Euro 2-pin 230V @ 50Hz
US 2-pin 110V @ 60Hz
ASIA 3-pin 240V @ 50Hz
Output voltage: +9.0V DC (regulated) @ 1.5A
1
9-way D to 9-way D PC Serial Cable (1.5m)
1
9-way D to 25-way D PC COM Port Adaptor
1
RJ11 RS485 flat cable (1.5m)
1
RJ11 RS485 flat cable (0.5m)
1
User Manual (RS232 to RS485 Convertor)
Figure 1
RS232-RS485 Convertor Manual V1.02 28/06/01
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2.0 RS232-RS485 Convertor End Panels
Figure 2
Number
Description
Type
1
RS-232 Connector
DB9 Female
2
Power Connector
2.5mm Power Connector
3
RS-485 Connector
RJ11
4
RS-485 Connector
RJ11
5
Traffic Light Status LED’s
3-way LED pack
Figure 3
2
RS232-RS485 Convertor Manual V1.02 28/06/01
2.1 RS-232 to RS-485 Status LED Indicators
Figure 4
No
1
LED Colour
Red
2
Yellow
3
Green
Status Description
Indicates that the PC has enabled RS-485 transmission.
This means that the RS-485 driver has been enabled allowing
the convertor to drive the RS-485 line to the remote system.
Indicates that the remote RS-485 system is transmitting data
to the PC through the convertor. The LED will flash when
data is being transmitted.
PC is transmitting data to the remote RS-485 system.
The LED will flash when data is being transmitted.
Figure 5
2.2 Input Power Supply Requirements
The power supply requirements for the ‘RS-232 to RS-485 Convertor Module’ are detailed
in the table below. The current drawn by the module from the external power supply varies
from a Standby Current when no data transfer is taking place to an Active Current when data
transfer is taking place.
Parameter
Values
Min
Standby Current
Typical
Max
10
Active Current
Supply Voltage
Units
8.3
9.0
mA
1000
mA
9.9
V DC
Figure 6
RS232-RS485 Convertor Manual V1.02 28/06/01
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2.3 J1 RS-232 Serial Communications Port
Connector type:
Purpose:
9-Way Male D Connector (Female)
Connects to PC COM port (RS-232)
This connector is an RS-232 serial port which connects to a spare RS-232 PC COM (serial)
port. The pin-out of this connector is detailed in the table below. The ‘RTS’ pin must be
asserted by the PC COM port in order to enable the RS-485 line driver.
J1 Pin-out:
Pin No.
Title RS232
Description RS232
1
DCD
Not Connected
2
RXD
Receive
3
TXD
Transmit
4
DTR
Not Connected
5
0 Volt
0V
6
DSR
Not Connected
7
RTS
RS-485 Transmit ENABLE
The PC must assert this signal line in order to enable the RS-485 line
driver to allow communications from the PC to the remote RS-485
system.
8
CTS
Not Connected
9
RING
Not Connected
Figure 7
4
RS232-RS485 Convertor Manual V1.02 28/06/01
2.4 J2 & J4 Isolated RS-485 Connectors
Connector type:
Purpose:
FCC68 Socket 6-Way (Accept RJ11 plugs)
Connects to RS-485 remote system e.g. PRO101/4/8 programmers
These two connectors are opto-isolated RS485 connectors for communicating with the
remote RS-485 system(s). The connectors are wired in parallel so each socket is the same
as the other. The ‘RS-232 to RS-485 Convertor Module’ is supplied with two RJ11 flat
cables for connecting between this module and the RS-485 remote system.
J2 & J4 – RS485 Connector Pin-outs:
Pin No.
Title
Description
1
TX+
Transmit +
2
TX-
Transmit -
3
RX+
Receive+
4
RX-
Receive-
5
GND
0V
6
GND
0V
Figure 8
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3.0 PRO101 – Multi-Channel RS-485
Operation
3.1 Overview
It is possible to network up to 16 PRO101 programmers on an RS-485 network and control
them from a single ‘Supervisor PC’ running a single session of the EQTools/ISP-PRO
software. This scenario requires that each PRO101 programmer is set to ‘RS-485’ and that a
unique ‘Node Address’ is set for each programmer. An RS-232 to RS-485 convertor is
required to convert the RS-232 signal from the PC COM port to an optically isolated RS-485
signal suitable for interfacing with the PPM’s on the network.
The typical setup is shown in the figure below:
Figure 9
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RS232-RS485 Convertor Manual V1.02 28/06/01
3.2 PRO101 Hardware Installation Instructions
•
Place the PRO101 programmers side-by-side on a flat surface allowing sufficient space
in front of each programmer to place the ‘ISP Interface Modules’ and ‘Target Systems’.
•
Remove the lid of each programmer by removing the four screws in the lid.
•
Set the ‘Communications Mode Switch’ (S2) to ‘RS-485’.
•
Set the Communications Node Address to the required unique address (0 to 15).
•
Plug the 9-way RS-232 cable into the port on the RS-232 to RS-485 convertor and
connect further PRO101 programmers as shown in the diagram below.
Figure 10
•
Plug an RS-485 network cable from one of the RS-485 outputs on the RS-485 convertor
to the ‘RS-485 Input’ connector on the rear panel of the first PRO101.
•
Plug another RS-485 network cable from the ‘RS-485 Output’ connector on the rear
panel of the first PRO101 to the next PRO101 in the chain.
•
A return RS-485 cable from the last PRO101 in the chain to the RS-485 convertor is
NOT required.
•
Power up the PC.
•
Plug in the power supply adaptor supplied with the RS-232/RS-485 convertor into a
spare mains socket.
•
Power up all PRO101 programmers.
•
Launch the ISP-PRO software on the PC and set up the required number of PPM’s
within the software.
•
Test that all PPM’s are communicating with the PC at their correct ‘Node Address’. (The
Node Address may be changed while the programmer is powered up).
•
When all PRO101’s are recognised by the ISP-PRO software, power down all
programmers and replace lids.
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4.0 PRO104 – 4 Channel Eurocard Rack
Production ISP System
4.1 Overview
The PRO104 programmer contains 4 PPM programming modules on an RS-485 network.
These are controlled from a single ‘Supervisor PC’ running the ISP-PRO software. An RS232 to RS-485 convertor is required to convert the RS-232 signal from the PC COM port to
an optically isolated RS-485 signal suitable for interfacing with the PPM’s on the network. It is
possible to expand from 1 up to 4 PRO104’s (16 PPM Boards in total).
The typical setup is shown in the figure below:
Figure 11
8
RS232-RS485 Convertor Manual V1.02 28/06/01
4.2 PRO104/108 Hardware Installation Instructions
•
Place the PRO104/108 programmer(s) on a flat surface allowing sufficient space in front
of each programmer to place the ‘ISP Interface Modules’ and ‘Target Systems’.
•
Plug the 9-way RS-232 cable into the port on the RS-232 to RS-485 convertor.
Figure 12
•
Plug an RS-485 network cable from one of the RS-485 outputs on the RS-485 convertor
to the ‘RS-485 Input’ connector on the rear panel of the first PRO104.
•
Plug another RS-485 network cable from the ‘RS-485 Output’ connector on the rear
panel of the first PRO104/108 to the next PRO104/108 in the chain.
•
A return RS-485 cable from the last PRO104/108 in the chain to the RS-485 convertor is
NOT required.
•
Power up the PC
•
Power up the PRO104/108 programmer(s)
•
Launch the ISP-PRO software on the PC and set up the required number of PPM’s
within the software
•
Test that all PPM’s are communicating with the PC at their correct ‘Node Address’. (The
Node Address may be changed while the programmer is powered up).
RS232-RS485 Convertor Manual V1.02 28/06/01
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