Peak PCAN-Diag IPEH-002069 User Manual

PCAN-Diag
Handheld Device
for CAN Bus Diagnostics
User Manual
V1.1.0
PCAN-Diag – User Manual
Products taken into account
Product Name
Model
Item Number
PCAN-Diag
High-speed CAN transceiver
On request:
Galvanic isolation for CAN interface
Low-speed CAN transceiver
Single-wire CAN transceiver
IPEH-002069
CANopen® and CiA® are registered community trade marks of CAN in Automation
e.V.
All other product names mentioned in this document may be the trademarks or
registered trademarks of their respective companies. They are not explicitly marked
by “™” and “®”.
© 2010 PEAK-System Technik GmbH
PEAK-System Technik GmbH
Otto-Roehm-Strasse 69
64293 Darmstadt
Germany
Phone: +49 (0)6151 8173-20
Fax:
+49 (0)6151 8173-29
www.peak-system.com
[email protected]
Document version 1.1.0 (2010-10-19)
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PCAN-Diag – User Manual
Contents
1
1.1
1.2
2
Introduction
5
Properties at a Glance
Scope of Supply
Operation
5
6
7
2.1 CAN Connection (D-Sub)
2.2 Power Supply
2.2.1 Supply Socket
2.2.2 Batteries
2.3 Operation Using the Push Dial
2.3.1 Powering Up the PCAN-Diag
2.4 Status Display
2.5 Device Settings
2.5.1 CAN Bitrate
2.5.2 CAN Termination
2.5.3 Observation Mode (Listen-only)
2.5.4 Voltage Ground at the CAN Socket
2.5.5 Preserving Battery Sources
2.5.6 Screensaver
2.5.7 Acoustic Feedback
7
8
9
9
11
11
13
14
14
15
15
15
16
16
16
3
Managing Settings with Profiles
17
4
Receiving and Transmitting CAN Data
18
4.1 Plain View of CAN Messages
4.2 Symbolic View of CAN Data
4.2.1 Creating Symbol Definitions on the PC
4.2.2 Loading Symbol Definitions onto the
PCAN-Diag
4.2.3 Opening the Symbolic View
3
18
19
19
21
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PCAN-Diag – User Manual
4.3 Transmitting CAN Messages
4.3.1 Creating Transmit Lists
4.3.2 Using Transmit Lists
23
23
24
5
Doing Measurements on the CAN Bus
26
Bus Load
CAN Bus Termination
Voltages on the D-Sub Connector
26
26
27
5.1
5.2
5.3
6
Scope Function
6.1
7
29
Using an External Measuring Signal
Technical Specifications
29
31
Appendix A
CE Certificate
33
Appendix B
Dimension Drawing
34
References for the Elements on the Back Side
CAN connector
on page 7
Probe connector
on page 29
Switch interlock for push dial
on page 11
Ground socket
on page 8
Supply socket
on page 9
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PCAN-Diag – User Manual
1
Introduction
PCAN-Diag is a dedicated device for analysis of various aspects of a
CAN bus in a mobile environment. Measurements of transmission
rate, bus load, and termination resistance are possible while
connected to a live bus. The device also serves as an oscilloscope
which shows the differential CAN Signal with two channels and has
various trigger options. A CAN frame can be decoded according to
the recorded signal course. On a protocol level, messages can be
displayed as a list, even in symbolic representation. In a similar
way, transmit lists may be defined and submitted.
Any user input is done via a push dial.
PCAN-Diag is normally shipped with a High-speed CAN transceiver,
different transceiver types may be chosen when ordering (factory
equipped only).
1.1
Properties at a Glance
High-speed CAN ISO 11898-2, transceivers for other CAN
transmission standards on request
CAN connection D-Sub 9-pin
OLED display with 320 x 240 pixels
Voltage supply with (rechargeable) batteries or with enclosed
AC adaptor (no charging function for inserted rechargeable
batteries).
Transmission of CAN messages or message lists
Symbolic representation of received CAN messages using CAN
definition files
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PCAN-Diag – User Manual
Measurement of bus load
Measurement of termination at the High-speed CAN bus
(during operation)
Voltage measurement of CAN lines
Oscilloscope function for CAN signals with 2 channels and a
sampling frequency of 20 MHz per channel
Various triggering possibilities (CAN ID, error frame, and more)
Decoding of CAN messages based on signal trace
1.2
Scope of Supply
PCAN-Diag
Plastic case for the device and accessories
4 batteries 1.5 V Mignon/AA
AC adaptor
CD with software and documentation
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PCAN-Diag – User Manual
2
Operation
For operation of the PCAN-Diag go through the sections of this
chapter in order.
2.1
CAN Connection (D-Sub)
Depending on the equipped CAN transceiver, PCAN-Diag's CAN
socket (9-pin D-Sub) has different pin assignments.
Pin assignment for equipment with High-speed CAN transceiver (standard)
or Low-speed CAN transceiver
Pin assignment for equipment with Single-wire CAN transceiver
(see additional notes below)
If the PCAN-Diag is equipped with a Single-wire CAN transceiver,
an external supply voltage for the transceiver must be applied to
pin 1. This voltage lies within 7 to 19 Volts, usually supplied by a car
battery.
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PCAN-Diag – User Manual
The connection of voltage ground (GND) to pins 3 and 6 can be
switched via Device Settings > D-Sub GND connection. See
also section 2.5.4 on page 15.
The connector's shield is internally connected to voltage ground
(GND).
For separate ground connection to other CAN nodes or measuring
objects an additional 4-millimeter GND socket is provided on the
back of the device. The internal GND connection is permanent.
GND socket (4 mm) on the back of the device
2.2
Power Supply
The PCAN-Diag can be supplied in two ways:
externally via the supply socket (section 2.2.1)
temporarily by (rechargeable) batteries (section 2.2.2)
While operation, supply status is shown on the screen's upper
status bar (section 2.4).
Note: Inserted rechargeable batteries are not charged during
external supply.
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PCAN-Diag – User Manual
2.2.1
Supply Socket
Supplying the PCAN-Diag via the designated socket can be done
using the enclosed AC adaptor or a similar DC source.
Supply socket at the back of the device
for the connection by a barrel connector
Supply voltage:
12 V DC (8 - 50 V possible)
2.2.2
Diameter of barrel connector:
a = 5.5 mm, b = 2.1 mm;
minimum length: 11 mm
Batteries
For mobile use, the PCAN-Diag can be supplied by (rechargeable)
batteries:
Size: Mignon/AA
Quantity: 4
Single voltage: nominal 1.2 V or 1.5 V
The battery compartment is located on the device's bottom side.
The lid is fixed with two screws.
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PCAN-Diag – User Manual
Positions of the screws for the lid of the battery compartment
(second screw is located beneath the rubber sleeve)
If an external supply is connected to the device, it will be used as
primary source. Batteries can stay in the device.
Note: Inserted rechargeable batteries are not charged during
external supply. For charging, please remove the empty
rechargeable batteries and use a separate charger (not part of
delivery).
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PCAN-Diag – User Manual
2.3
Operation Using the Push Dial
Operating the PCAN-Diag is solely done by a push dial.
Push:
Power-up device;
execute selected
function; exit current
function
Dial:
Move selection; alter
value
2.3.1
Powering Up the PCAN-Diag
Hold down the push dial for at least half a second.
A splash screen appears for a short moment; then it's replaced by
the main menu.
Turning off the device is done by selecting Power Off from the
main menu.
Powering-up the device can be blocked by a small knob on the back,
in order to prevent the batteries from accidental discharging, e.g.
during transport.
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PCAN-Diag – User Manual
Knob on the back of the device for switch interlock of the push dial
In order to activate the switch interlock, push the knob using a thin
object. The device now cannot be powered-up with the push dial.
Unlocking is done likewise: push the small knob again.
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PCAN-Diag – User Manual
2.4
Status Display
When operating the device, in the upper status bar, some symbols
give information on the voltage supply status and about the CAN
bus communication. Their meaning is as follows:
Symbol Meaning
The device is connected to an external voltage source (e.g. AC
adaptor)
The device is supplied by the inserted (rechargeable) batteries. An
estimation on the remaining capacity is given.
T R
CAN traffic: T = Transmit, R = Receive
Blinking:
Outgoing/incoming CAN messages
Green:
Regular traffic
Yellow, red: Erroneous traffic
act
pas
off
Shows information on the CAN controller's bus status register
(active, passive, bus off). When entering bus-off state, due to high
error rate, no further CAN messages are transmitted or received. In
this case, after fixing the bus problem, a reset of the CAN controller
should be performed, e.g. in the Receive view with Rst or the
Transmit view with Reset .
L
The device operates in observation mode (listen-only). See section
2.5.3 on page 15.
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PCAN-Diag – User Manual
2.5
Device Settings
In the main menu select Device Settings. The corresponding
menu offers settings for the device which are explained in the
following.
After changing any settings, make them permanent by pressing
Save&OK. If you want to use the changed settings only temporarily
(during the current session), press OK. A subsequent session (after
an off-on cycle) uses the initial settings again.
Tip: Using Profiles from the main menu, you can save
different sets of device settings (profiles) and recall them later
on demand. See also chapter 3 on page 17.
2.5.1
CAN Bitrate
When connecting PCAN-Diag to an “unknown” CAN bus, transmission speed may be detected automatically using menu item
Detect CAN bitrate. This feature assumes some CAN traffic on
that bus.
The manual selection is done with CAN bitrate. Here you can
select from a list of predefined bit rates.
To adapt to specific conditions, experts may directly access the CAN
controller's bus timing registers BTR0 and BTR1. To do so, set the
item CAN bitrate to User and under User CAN bitrate (hex)
enter a 2-byte value (4 hex digits) being written to the registers.
Note: CAN decoding as part of the scope function doesn't work
with user defined CAN bitrates.
Get further information about setting the CAN bitrate by Bus Timing
Register on request (contact data: see on page 2).
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PCAN-Diag – User Manual
2.5.2
CAN Termination
A High-speed CAN bus needs to be electrically terminated on both
ends using resistors of 120 Ω. If the PCAN-Diag is connected to an
un-terminated end of a CAN bus, you can activate an internal
resistor by menu item CAN termination.
Note: This menu item is only available if the device is equipped
with a High-speed CAN transceiver.
Off: Termination is already correctly applied to the High-speed
CAN bus and the device is connected to a tap within the CAN
bus.
On: The device is connected to a CAN bus whose termination
isn't complete yet.
Tip: If you want to check that a connected High-speed CAN bus
is terminated correctly, you can use the function
Measurements > CAN Termination (see also section 5.2 on
page 26).
2.5.3
Observation Mode (Listen-only)
If the device shall silently watch traffic on the CAN bus without
influencing it, you can activate the Listen-only mode (set to On).
Doing so, the device will neither acknowledge nor transmit CAN
(error) frames.
2.5.4
Voltage Ground at the CAN Socket
Connecting the device's voltage ground to the monitored CAN bus
may not be useful in some cases. On the scope function differing
ground levels may cause improper readings, for example.
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PCAN-Diag – User Manual
Therefore, you can disconnect the device's voltage ground from DSub connector by software. To do so, set the menu entry D-Sub
GND connection to Off. This setting is relevant for pins 3 and 6 of
the D-Sub connector together (for assignment overview see on
page 7). The connector shield is permanently connected to the
device's voltage ground.
2.5.5
Preserving Battery Sources
If you run the PCAN-Diag with (rechargeable) batteries, battery
sources can be preserved by switching off the device automatically
after a set period of inactivity. You may determine the period with
Shutdown time (battery). Setting to Never causes the device
to be alive all the time.
If operating the device with an external supply, for example with the
enclosed AC adaptor, this setting doesn't have any effect.
2.5.6
Screensaver
The brightness of the display will be reduced whenever the device
is not operated for a certain period. You can set this period with
Screensaver timeout.
2.5.7
Acoustic Feedback
The PCAN-Diag can give acoustic feedback to several events. This
function is enabled or disabled with Beeper.
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PCAN-Diag – User Manual
3
Managing Settings with
Profiles
In order to quickly adapt the PCAN-Diag to another operational
environment, settings can be reloaded from a profile that has been
saved before. The PCAN-Diag offers five storage locations.
The following settings are included in the profiles:
device settings
measurement settings for the D-Sub connection
scope settings
The management is done via the item Profiles in the main menu.
Profiles are stored in the device's internal memory.
Note: Symbol definitions for CAN data are managed independently of the settings profiles. See also section 4.2 Symbolic
View of CAN Data on page 19.
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PCAN-Diag – User Manual
4
Receiving and Transmitting
CAN Data
The PCAN-Diag displays all CAN messages on a connected CAN bus
and transmits user defined CAN messages as well. Representation
of message content is either in hexadecimal format or symbolic.
Symbol definitions are transferred via the connected CAN bus.
4.1
Plain View of CAN Messages
You can access the plain view of incoming CAN messages via CAN
Data > Receive Messages. Representation of CAN data is in
hexadecimal format.
Incoming CAN messages are displayed as a list, sorted by CAN ID.
You can manipulate sorting by clicking on CAN messages. Those
get priority then, meaning that they are shifted to the top of the list.
Messages with priority are displayed in orange color. Clicking on
orange CAN messages takes back priority, meaning that they are
sorted by CAN ID again.
Further functions:
Function
Explanation
Rst
Clears the list of incoming CAN messages and resets the CAN
controller. This might be useful in case of CAN errors.
Tx1 … Tx7
Activates the selected transmit list. The bottom status bar gives
information to the selected transmit list. Transmit lists are managed
in CAN Data > Manage Transmit Lists .
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PCAN-Diag – User Manual
4.2
Symbolic View of CAN Data
For displaying data of incoming CAN messages in symbolic
representation, a symbol file must be created on PC and uploaded
via CAN to the PCAN-Diag then.
Preconditions for applying symbol definitions to the PCAN-Diag are:
Computer with CAN interface of the PCAN series (e.g. PCANUSB)
CAN cabling with correct termination
Windows 7/Vista/XP (32/64-bit)
PPCAN-Editor for Windows (setup file is provided on the
enclosed CD) incl. hardware profile for PCAN-Diag
4.2.1
Creating Symbol Definitions on the PC
Symbol definitions are created with the PPCAN-Editor as a so-called
configuration. Necessary steps for doing so are explained by an
example with following properties:
Property
Value
CAN ID (hex)
300
Symbol name
DemoMessage
Data length (DLC)
2 bytes
Data (variables)
Meter (8 bits)
Switch1 (1 bit)
Switch2 (1 bit)
Do the following to create a configuration with symbol
definitions in the PPCAN-Editor:
1.
Select the menu entry File > New (alternative:
).
The window CAN Objects appears with the General tab.
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PCAN-Diag – User Manual
2.
On the General tab select the entry Bus_0 and then the
menu item CAN Objects > Add a new Symbol (alternative:
).
The new entry Symbol1 appears in the tree structure.
3.
Modify the entry by clicking each single field and enter the
example's values. Make sure to enable the entry (Enable is
checked).
4.
Select the menu item CAN Objects > Add a new Variable
(alternative: ).
5.
Adjust the entry Var1 (variable Meter).
6.
Repeat the last two steps for the other variables.
7.
Select the menu item Edit > New Configuration (alternative:
), and then, from the opened list the item $1A: PCANDiag. Confirm your selection with OK.
The CAN Objects window gets the additional tabConfig0 I/O.
8.
Click the tab Config I/O and enter a name for it (e.g. Diag
Example).
9.
From the General tab select the entry Bus_0, then select the
menu item CAN Objects > Add Bus to Configuration, and
subsequently from the displayed list select the entry Diag
Example I/O. Confirm your selection with OK.
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