ESD CAN - PCC User manual

Attention!
Strictly follow the installation notes!
(See chapt. 2 of the hardware manual).
The order of the individual steps of the hardware installation as specified in the
installation notes must be followed at any rate, because otherwise serious damage can
be caused to PC or laptop, or to the CAN-PCC module!
Especially the low-voltage connector has to be connected to the CAN-PCC module first
and only after that the module is to be connected to the PC/laptop! Otherwise live parts
of the low-voltage connector (+5V between the middle contact) could come into contact
with earthed metal parts of the cases and cause a short circuit!

CAN-PCC Hardware Manual Rev. 1.2
esd gmbh
CAN - PCC
CAN Interface For One Parallel Interface
Hardware Manual

CAN-PCC Hardware Manual Rev. 1.2
N O T E
The information in this document has been carefully checked and is believed to be entirely reliable. esd
makes no warranty of any kind with regard to the material in this document, and assumes no
responsibility for any errors that may appear in this document. esd reserves the right to make changes
without notice to this, or any of its products, to improve reliability, performance or design.
esd assumes no responsibility for the use of any circuitry other than circuitry which is part of a product
of esd gmbh.
esd does not convey to the purchaser of the product described herein any license under the patent rights
of esd gmbh nor the rights of others.
esd electronic system design gmbh
Vahrenwalder Str. 205
D-30165 Hannover
Germany
Phone: [phone]
Fax: [phone]
Email: [email protected]
Internet: http://www.esd-electronics.com

CAN-PCC Hardware Manual Rev. 1.2
Manual File: I:\TEXTE\DOKU\MANUALS\CAN\CENTRONI\CANPP12H.EN6
Date of Print: 12.03.1998
Version Designation of
Board: CANPP-2
Version Designation of
Circuit Diagrams: CANPP02, Rev. 1.1
Changes in the chapters
The changes in the manual listed below affect changes in the hardware, as well as changes in the
description of the facts only.
Chapter Alterations versus manual version 1.1
-First English issue (manual).
Technical details are subject to change without notice.

CAN-PCC Hardware Manual Rev. 1.2
Attention!
Strictly follow the installation notes!
(See chapt. 2 of the hardware manual).
The order of the individual steps of the hardware installation as
specified in the installation notes must be followed at any rate,
becauseotherwise serious damage can be caused to PC or
laptop, or to the CAN-PCC module!
Especially the low-voltage connector has to be connected to
the CAN-PCC module first and only after that the module is to
be connected to the PC/laptop! Otherwise live parts of the low-
voltage connector (+5V between the middle contact) could
come into contact with earthed metal parts of the cases and
cause a short circuit!

Contents Page
CAN-PCC Hardware Manual Rev. 1.2 1
1. Overview ....................................................................3
1.1 Module Description .....................................................3
1.2 Case View ............................................................5
1.3 General Technical Data of the Interface Module ...............................6
1.4 Technical Data of the Miniature Connector-Power Pack ........................7
1.5 CAN- and µController Units ..............................................8
1.6 Software Support .......................................................9
1.7 Order Information .....................................................11
2. Installation Notes ............................................................13
3. Unit Description .............................................................15
3.1 CAN-Interface ........................................................15
3.1.1 Bitrate .......................................................15
3.1.2 Transmit- and Receive Circuit of the CAN Interface (Physical Layer) .....15
3.2 CENTRONICS Interface ................................................16
3.3 Status LED ...........................................................17
4. Appendix ...................................................................19
4.1 Connector Assignment ..................................................19
4.1.1 CENTRONICS Connector P1 .....................................19
4.1.2 CAN Connector P3 (9-pole male DSUB connector) ...................20
4.2 Circuit Diagrams ......................................................21

CAN-PCC Hardware Manual Rev. 1.22

+5 V=
+5 V=
P1
CENTRONICS
D0...D7
CAN to
CENTRONICS
FIFO
D0...D7
CAN
physical
CAN
layer
C
A
N
B
U
S
P3
electrical separation
voltage
control
watch-
dog
256 bytes
RAM
µC
87C592
dig.
IO ports
dig.
IO ports
data
transceiver
25-pole
DSUB connector (male)
multiplexer
control
logic
data D0...D7
control signals
status
local
voltage supply
control
signals
P4
voltage supply
DSUB9
CiA assignment
DC/DC
converter
Overview
CAN-PCC Hardware Manual Rev. 1.2 3
1. Overview
1.1 Module Description
The module offers a bidirectional interface between CENTRONICS and CAN, and therefore an
easy and inexpensive coupling of a PC, laptop, or something similar, to the CAN.
By means of the CAN-PCC module other CAN modules can be controlled or monitored for instance
by a PC.
Fig. 1.1.1: Block circuit of the module
The CAN controller is a 87C592, which supports 2048 CAN identifiers. The CAN interface is
electrically separated from the CENTRONICS interface by optocouplers and DC/DC converters.
The voltage supply of the module has to be feeded externally. This can for instance be made via a
keyboard adaptor cable from the PC/laptop or via a miniature connector-power pack. The
permissible input-voltage range can be taken from the technical data on the following pages.

Overview
CAN-PCC Hardware Manual Rev. 1.24
Data is transferred from the CENTRONICS interface to the CAN byte by byte. Data which is
transferred vice versa (CAN to CENTRONICS) can also be transferred byte by byte.
Older PC-CENTRONICS interfaces, however, do not always have a bidirectional data path. The
software contained in the product package recognizes this and then uses the control lines for the
data transfer. In this case four bits each are transferred parallel.
The data transmitted by the CAN is buffered in a (minimum) 512 bytes-sized FIFO so that no data is
lost at larger data rates.
The CENTRONICS is connected by means of a 25-pole male DSUB connector. The CAN is
connected via a 9-pole male DSUB connector.
The complete communication firmware of the module is contained in the product package. The user
interface between PC and CAN is made of libraries which contain commands to parameterize the
module and control the data transfer. Libraries for Windows (.dll), OS/2 and DOS are available. An
installation program makes it easy to take the module into operation and adapt it to the PC.
The layer-7 protocols for CAL, CANopen and SDS are supported by means of various software
packages (optional) for the PC.

15.8
71.5
85.0
54.8
P2 - voltage supply
(female with 1.3 mm stud)
status-LED (green) P3 - CAN
(9-pole DSUB connector)
P1 - CENTRONICS
(25-pole DSUB connector)
inner thread
4-40 UNC
outer thread
4-40 UNC
Overview
CAN-PCC Hardware Manual Rev. 1.2 5
1.2 Case View
Fig. 1.2.1: Dimensions and connector designations of the CAN-PCC module