OBR PCM2 User manual

Control Systems OBR Control Systems Inc
OBR Control Systems Inc Telephone : [phone] [e-mail]
32233 West 8 Mile Road www.obrcontrolsystems.com
Livonia, Michigan 48152
USA 1 / 92
Power Control Module
PCM2
The Next Generation Intelligent Power Distribution
Module
Installation and User Guide for PCM2
Firmware and Tool Version 1.47
With Membrane Switch Panel and
Steering Wheel Controller Version 2.9
Version 2.71 – October 2018
Copyright © OBR Control Systems Inc 2011-2018. All rights reserved.

Control Systems OBR Control Systems Inc
OBR Control Systems Inc Telephone : [phone] [e-mail]
32233 West 8 Mile Road www.obrcontrolsystems.com
Livonia, Michigan 48152
USA 2 / 92
1 Introduction ................................................................................................................................................. 6
2 Hardware .................................................................................................................................................... 8
3 Software installation ................................................................................................................................... 9
3.1 Software installation from web-download ........................................................................................... 9
3.2 PC Software and Firmware Releases ................................................................................................ 9
3.3 Connection to system ......................................................................................................................... 9
3.4 Wiring Harness ................................................................................................................................... 9
4 Main Menu ................................................................................................................................................ 10
4.1 File .................................................................................................................................................... 10
4.2 Product ............................................................................................................................................. 10
4.3 Device............................................................................................................................................... 10
4.3.1 Read ............................................................................................................................................ 10
4.3.2 Write ............................................................................................................................................ 10
4.3.3 Reset ........................................................................................................................................... 11
4.3.4 Firmware ..................................................................................................................................... 11
4.3.5 Manual Output Mode ................................................................................................................... 11
4.3.6 Automatic Output Mode .............................................................................................................. 11
4.3.7 Manual Output Mode, Keep Current States ................................................................................ 11
4.3.8 Get Time ...................................................................................................................................... 11
4.3.9 Set Time ...................................................................................................................................... 11
4.3.10 Reset Output Counters .......................................................................................................... 11
4.3.11 Get Firmware Checksum ....................................................................................................... 11
4.4 Interface............................................................................................................................................ 12
4.5 Options ............................................................................................................................................. 12
4.5.1 Reset Display .............................................................................................................................. 12
4.5.2 Sync Time Automatically ............................................................................................................. 12
4.6 User .................................................................................................................................................. 12
4.7 Help .................................................................................................................................................. 12
5 Functions .................................................................................................................................................. 13
5.1 Overview........................................................................................................................................... 13
5.2 Units ................................................................................................................................................. 13
5.3 Event Handling ................................................................................................................................. 13
5.3.1 Event Type .................................................................................................................................. 13
5.3.1.1 Input follow ......................................................................................................................... 13
5.3.1.2 Input toggle ........................................................................................................................ 14
5.3.1.3 AND gate ............................................................................................................................ 14
5.3.1.4 OR gate .............................................................................................................................. 14
5.3.1.5 NOR gate ........................................................................................................................... 14
5.3.1.6 XOR gate ........................................................................................................................... 14
5.3.1.7 NOT gate ............................................................................................................................ 15
5.3.1.8 Flash .................................................................................................................................. 15
5.3.1.9 Delay input ON ................................................................................................................... 15
5.3.1.10 Delay input OFF ............................................................................................................ 15
5.3.1.11 Counter Increment ........................................................................................................ 15
5.3.1.12 Counter Decrement....................................................................................................... 15
5.3.1.13 Reset ............................................................................................................................. 15
5.3.1.14 Clock ............................................................................................................................. 16
5.3.1.15 Always ON .................................................................................................................... 16
5.3.1.16 Tri-state output .............................................................................................................. 16
5.3.1.17 Wiper output .................................................................................................................. 16
5.3.1.18 Event Flash ................................................................................................................... 16
5.3.1.19 Event Delay On ............................................................................................................. 16
5.3.1.20 Event Delay Off ............................................................................................................. 16
5.3.1.21 Event Wiper .................................................................................................................. 17
5.3.2 Event Name................................................................................................................................. 17
5.3.3 Source Input ................................................................................................................................ 17
5.3.3.1 Fault Status ........................................................................................................................ 17
5.3.4 Turn ON / Turn OFF .................................................................................................................... 17
5.3.5 Event 1 / 2 / 3 / 4 / 5 .................................................................................................................... 17
5.3.6 Time (ms) .................................................................................................................................... 18

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5.3.7 CAN Inputs – Lost CAN Action ................................................................................................... 18
5.3.8 CAN Lost Timer ........................................................................................................................... 18
5.3.9 Start State ................................................................................................................................... 18
5.3.10 Output .................................................................................................................................... 18
5.3.11 Multiplier ................................................................................................................................. 18
5.3.12 Counter .................................................................................................................................. 18
5.3.13 Clock ...................................................................................................................................... 18
5.4 Miscellaneous ................................................................................................................................... 19
5.5 Special Functions ............................................................................................................................. 19
5.5.1 Special function ON .................................................................................................................... 19
5.5.2 Special function OFF ................................................................................................................... 19
5.6 Counters ........................................................................................................................................... 20
5.6.1 Increment Action ......................................................................................................................... 20
5.6.2 Decrement Action ........................................................................................................................ 21
5.7 Status ............................................................................................................................................... 21
5.7.1 Warning Light Status ................................................................................................................... 21
5.8 Events Monitor ................................................................................................................................. 22
5.9 Output Diagnostic ............................................................................................................................. 22
6 Compare two Calibration Files ................................................................................................................. 24
7 User Access Rights .................................................................................................................................. 25
7.1.1 Change User ............................................................................................................................... 25
7.1.1.1 Default Passwords ............................................................................................................. 25
7.1.2 Show User Params ..................................................................................................................... 25
7.1.2.1 Import and Export of User Access Rights .......................................................................... 26
8 Inputs ........................................................................................................................................................ 27
8.1 Digital Inputs ..................................................................................................................................... 27
8.1.1 Pin Configuration Digital Inputs ................................................................................................... 27
8.2 Analogue Inputs ............................................................................................................................... 28
8.2.1 Pin Configuration Analogue Inputs ............................................................................................. 29
8.3 CAN Inputs ....................................................................................................................................... 30
8.3.1 CAN Overview ............................................................................................................................. 30
8.3.2 CAN Channel Editing .................................................................................................................. 30
8.3.3 CAN Row Counts ........................................................................................................................ 34
8.3.4 Pin Configuration for CAN Ports ................................................................................................. 34
9 Outputs ..................................................................................................................................................... 35
9.1 Tri-State ............................................................................................................................................ 35
9.1.1 Pin Configuration Tri-State Outputs ............................................................................................ 35
9.2 Low Power Outputs .......................................................................................................................... 36
9.2.1 Parallel Coupling ......................................................................................................................... 37
9.2.2 Pin Configuration Low Power Outputs ........................................................................................ 38
9.3 Low Power PWM Outputs ................................................................................................................ 39
9.3.1 Half Bridge – Full Bridge ............................................................................................................. 39
9.3.2 Current Draws ............................................................................................................................. 39
9.3.3 Pin Configuration Low Power PWM Outputs .............................................................................. 42
9.4 High Power Outputs ......................................................................................................................... 43
9.4.1 Pin Configuration High Power Outputs ....................................................................................... 44
9.5 High Power PWM Outputs ............................................................................................................... 45
9.5.1 Half Bridge – Full Bridge ............................................................................................................. 45
9.5.2 Current Draws ............................................................................................................................. 45
9.5.3 Pin Configuration High Power PWM Outputs ............................................................................. 48
9.6 Very High Power .............................................................................................................................. 49
9.6.1 Pin Configuration Very High Power Outputs ............................................................................... 50
9.7 Wiper Outputs .................................................................................................................................. 51
9.7.1 Pin Configuration Wiper Outputs................................................................................................. 52
9.8 Sensor Supplies ............................................................................................................................... 53
9.8.1 Pin Configuration 5 Volt VREF Outputs ...................................................................................... 53
9.9 Warning Light ................................................................................................................................... 53
9.10 Fault Reset ....................................................................................................................................... 53
9.10.1 Pin Configuration Warning Light Output ................................................................................ 53
10 Visualisation ..................................................................................................................................... 54

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10.1 Digital Inputs ..................................................................................................................................... 54
10.2 Analogue Inputs ............................................................................................................................... 54
10.3 CAN Inputs ....................................................................................................................................... 55
10.4 Events............................................................................................................................................... 55
10.5 Outputs ............................................................................................................................................. 55
11 CAN BUS.......................................................................................................................................... 56
11.1 Data Bus ........................................................................................................................................... 56
11.1.1 CAN Bus Name ...................................................................................................................... 56
11.1.2 CAN Bus Speed ..................................................................................................................... 56
11.1.3 CAN Maximum Identifiers ...................................................................................................... 56
11.1.4 Termination ............................................................................................................................ 57
11.1.4.1 Correctly Terminated CAN Bus .................................................................................... 57
11.1.4.2 Incorrectly Terminated CAN Bus .................................................................................. 58
11.1.5 Error Report ........................................................................................................................... 59
11.1.6 CAN Bus Identity .................................................................................................................... 59
11.2 CAN Monitor ..................................................................................................................................... 59
11.3 CAN Export ...................................................................................................................................... 60
11.3.1 Configuration of Export Channels .......................................................................................... 60
11.3.2 Definition of Export Bytes ....................................................................................................... 61
“CON” - Constant Value .................................................................................................................... 61
“DS” - Digital Input Status.................................................................................................................. 61
“AL” - Analogue Input LSB ................................................................................................................ 61
“AM” - Analogue Input MSB .............................................................................................................. 61
“OS” - Output ON or OFF Status ....................................................................................................... 61
“OCL” - Output Current Low Byte ...................................................................................................... 61
“OCM” - Output Current Mid Byte ..................................................................................................... 61
“TO” - Output Tri-State Voltage ......................................................................................................... 62
“OFL” - Output Fault Status LSB ....................................................................................................... 62
“VVL” & “VVM” - Vehicle Battery Voltage .......................................................................................... 62
“EVL” & “EVH” - Event Status ........................................................................................................... 63
“OCH” - Output Current Top Byte ..................................................................................................... 63
“OCL2” - Output Current LSB Byte (mA/2) ........................................................................................ 63
“OCM2” - Output Current MSB byte (mA/2) ...................................................................................... 63
“OCL4” - Output Current LSB Byte (mA/4) ........................................................................................ 63
“OCM4” - Output Current MSB byte (mA/4) ...................................................................................... 63
“OCS” - Output Current Single byte (A) ............................................................................................ 63
“TP” - Temperature Degrees Celcius ................................................................................................ 63
“VC” - Vehicle Current (A) ................................................................................................................. 63
“PFL” - PWM Frequency LSB............................................................................................................ 63
“PFM” - PWM Frequency MSB ......................................................................................................... 64
“PDC” - PWM Duty Cycle .................................................................................................................. 64
“CIL” - CAN Input LSB ....................................................................................................................... 64
“CIM” - CAN Input MSB ..................................................................................................................... 64
11.3.3 CAN bus export with row count .............................................................................................. 65
12 LIN Bus – Wiper Motor Control ........................................................................................................ 66
13 Serial Link ......................................................................................................................................... 68
14 Membrane Switch Panel .................................................................................................................. 69
14.1 Software installation ......................................................................................................................... 69
14.2 Connection to system ....................................................................................................................... 69
14.3 Main Menu ........................................................................................................................................ 70
14.3.1 File.......................................................................................................................................... 70
14.3.2 Device .................................................................................................................................... 70
14.3.2.1 Firmware Update .......................................................................................................... 70
14.3.3 Interface ................................................................................................................................. 70
14.3.4 Help ........................................................................................................................................ 70
14.4 Switches ........................................................................................................................................... 71
14.4.1 Position and Numbering ......................................................................................................... 71
14.4.2 Switch name ........................................................................................................................... 71
14.4.3 Mode ...................................................................................................................................... 71
14.4.4 Initial ....................................................................................................................................... 71

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14.4.5 Max......................................................................................................................................... 71
14.4.6 New / Leg ............................................................................................................................... 71
14.4.7 Press / Release ...................................................................................................................... 71
14.4.8 Green LED’s ........................................................................................................................... 72
14.4.9 Red LED’s .............................................................................................................................. 72
14.4.10 Extra / Group .......................................................................................................................... 72
14.4.11 Status ..................................................................................................................................... 72
14.5 CAN Bus ........................................................................................................................................... 73
Standard CAN Protocol – Transmit from MSP ......................................................................................... 73
14.5.1 Standard CAN Protocol – Receive switch status from PCM2 ............................................... 75
14.5.2 Standard CAN Protocol – Receive fault status from PCM2 ................................................... 76
14.5.3 Speed / Termination / PCM Select ......................................................................................... 77
14.5.4 Panel Transmit ....................................................................................................................... 77
14.5.5 Panel Receive ........................................................................................................................ 77
14.6 CAN Bus Export ............................................................................................................................... 79
14.7 Miscellaneous Functions .................................................................................................................. 81
14.8 CAN Bus Monitor .............................................................................................................................. 81
15 Steering Wheel Controller ................................................................................................................ 83
16 PCM2 Pin Configuration ................................................................................................................... 86
16.1 Connector 1 – Battery Power Supply ............................................................................................... 86
16.2 Connector 2 – High Power Outputs ................................................................................................. 86
16.3 Connector 3 – Low Power Outputs .................................................................................................. 87
16.4 Connector 4 – Signal and Inputs ...................................................................................................... 88
17 Specifications ................................................................................................................................... 90
17.1 Inputs ................................................................................................................................................ 90
17.2 Outputs ............................................................................................................................................. 90
17.2.1 Very high power channels ...................................................................................................... 90
17.2.2 High power channels.............................................................................................................. 90
17.2.3 High power PWM channels .................................................................................................... 90
17.2.4 Low power channels .............................................................................................................. 90
17.2.5 Low power PWM channels .................................................................................................... 90
17.2.6 Wiper channels ...................................................................................................................... 90
17.2.7 Sensor supplies & warning light ............................................................................................. 91
17.2.8 Tristate Supplies .................................................................................................................... 91
17.3 Maximum current rating .................................................................................................................... 91
17.4 Temperatures ................................................................................................................................... 91
17.5 Communication ................................................................................................................................ 91
17.6 Power Supply ................................................................................................................................... 91
17.7 Dimensions ....................................................................................................................................... 92

Control Systems OBR Control Systems Inc
OBR Control Systems Inc Telephone : [phone] [e-mail]
32233 West 8 Mile Road www.obrcontrolsystems.com
Livonia, Michigan 48152
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1 Introduction
The award winning PCM2 takes the whole Power Control Module concept much further than
conventional modules. Based on our experience and success of the first generation module, PCM2
is a very powerful, flexible and technically advanced module. PCM2 is a huge step ahead of the old
model, in technology, features and its very high current handling ability.
It provides an effective and inspired alternative to conventional relays, circuit breakers, fuses and
wires that can so often be a tangle of complexity and untidiness around a typical racing car’s power
junction box.
PCM2 is a compact and light weight module, measuring 191 x 176 x 36 mm (excluding the
Autosport connectors).
PCM2 has 48 power output channels, arranged as:
- 26 normal power channels, each max 8 A continuous power supply.
- 2 normal and wiper motor power channels, each max 8 A continuous power supply.
- 4 low power channels with PWM, each max 8 A continuous power supply.
- 14 high power channels, each max 20 A continuous power supply.
- 2 high power channels with PWM, each max 20 A continuous power supply.
- 2 very high power channels, each max 20 A continuous power supply, inrush current up to
200A.
All outputs are protected against reversed battery polarity.
Current draw can be measured on all 48 power channels:
- From 50 mA on 4 low power channels (not in current software release)
- From 200 mA on all other channels.
Any of these channels can be controlled by various types and combinations of inputs:
- 14 digital inputs with automatic sensing of high, low and floating potential.
- 16 analogue 0..5 Volt sensor inputs with 16 bit resolution.
- 64 individually programmable CAN inputs, 11 or 29 bit identifiers, with bit operator.
- 4 individually programmable CAN ports.
PCM2 is also equipped with 4 tri-state outputs. A tri-state output is only for use as an ECU trigger
signal. Do not connect any of these four channels to any output load.
In addition to the 4 CAN ports, PCM2 is also equipped with a LIN bus. PCM2 can be configured as
either a LIN bus master or slave.
Use the LIN bus for example to control the alternator charge current or to control the wiper motor.
Not in current software release.
Instead of using a conventional control program, PCM2 benefits from a multitasking operating
system.
Furthermore, PCM2 is equipped with a real time clock and also has a built-in data recording facility
with a memory capacity of typically 2 Gb, depending on requested data card capacity.
Data is downloaded via the Ethernet connection (not in current software release).
Please note that the maximum recommended current draw per channel is limited by the
connector contacts - not by PCM2’s driver stages. We have rated the individual channel’s
current draw in relation to the connector manufacturer’s specifications.
PCM2 is programmed to shut overloaded channels down if the current draw and internal junction
temperatures exceed pre-set levels.
Board temperatures are monitored and can be exported via CAN.

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For normal running conditions, the user can set limits for inrush current level and time, the fused
threshold for continuous current draw plus the number of retries and retry time intervals for each
output channel.
A manual reset function of all channels in fault mode is also available.
The current draws and channel status can be exported via one of the available CAN bus.
PCM2 offers CAN routing between ay of the 4 available CAN ports.
Please note that the PCM is not intended to be used to control safety-critical systems on a vehicle,
such as ABS braking, power steering, etc.
Ole Buhl Racing Ltd. shall not be responsible for any incidental or consequential damages or
injuries that may occur if the unit is used to control these, or similar, safety-critical systems.

Control Systems OBR Control Systems Inc
OBR Control Systems Inc Telephone : [phone] [e-mail]
32233 West 8 Mile Road www.obrcontrolsystems.com
Livonia, Michigan 48152
USA 8 / 92
2 Hardware
The PCM2 enclosure is CNC machined to the highest standards.
The two parts of the casing are sealed by an O-ring, located in a recess in the main half. A lip in
the lid presses on the O-ring and assures a water tight sealing. The connectors are individually
sealed.
Connector #1 is a Deutsch Autosport Heavy Duty single pin connector, type ASHD0 14-1 PN.
This is a specially developed connector, designed to conduct very high currents with very low
losses and to withstand high temperatures.
We recommend using a 35 sq.mm heavy duty battery cable as the main power supply.
The mating connector on the wiring loom must be ASHD6 14-1 SN C35.
Connector #2 is a Deutsch Autosport connector, type AS2 20-16 SN. This connector has 16 size
AWG 16 contacts and each contact is designed to handle a maximum current of 20 A.
The mating connector on the wiring loom must be a Deutsch AS6 20-16 PN or a Souriau 8STA6
20-16 PN.
Connector #3 is a Deutsch Autosport connector, type AS2 20-39 SA. It has a different keyway to
connector 2, preventing incorrect mating of connectors.
This connector has 37 size AWG 20 contacts and 2 size AWG 16 contacts. Each AWG 20 contact
is designed to handle max 8 A current.
The two size AWG 16 contacts (pins m and r) in this connector are power ground connections and
must be connected to earth.
The mating connector on the wiring loom must be Deutsch AS6 20-39 PA or a Souriau 8STA6 20-
39 PA (yellow coding).
Connector #4 is a Deutsch Autosport connector, type AS2 16-35 SN. This connector has 55 size
AWG 22 contacts and is used for signal, sensor supplies and data connections.
The mating connector on the wiring loom must be a Deutsch AS6 16-35 PN or a Souriau 8STA6
16-55 SN.

Control Systems OBR Control Systems Inc
OBR Control Systems Inc Telephone : [phone] [e-mail]
32233 West 8 Mile Road www.obrcontrolsystems.com
Livonia, Michigan 48152
USA 9 / 92
3 Software installation
The software does not need any installation, it can be run from a program folder which contains the
main initialisation file, the executable file and – if used – the device driver for the Peak System
PCAN interface.
The software can be down loaded from our web site – www.obr.uk.com.
3.1 Software installation from web-download
It is possible to download the PCM2 support tab from our web site. Go to www.obr.uk.com and
select the Support tab.
When you have downloaded the PCM2 software, open the folder where you saved the file and
double click on the installation file. This file is called SETUP PCM2 vX_YZ.EXE where X_YZ refers
to the software release version.
3.2 PC Software and Firmware Releases
Each new release of PCM2 firmware requires an updated, specific PC tool release.
Any new release of the PC tool is backwards compatible, meaning that it will support earlier PCM2
firmware releases.
Please note, that new features visible in the new tool will not functioning if used in conjunction with
old firmware versions.
It is strongly recommended always to use the latest software releases and always make sure you
use tool and firmware having the same release version number.
3.3 Connection to system
Communication between the PC tool and a PCM2 is established via any of the available 4 CAN
ports, using a USB CAN interface. Connection is automatic; no user commands are required.
Support for three different versions of interfaces are provided with the system:
- Blue CANUSB interface from Lawicel.
- PCAN USB CAN interfaces from Peak Systems.
- EFI Technology USB-CAN interface (EFP02 or EFT20)
If you use the Peak System PCAN interface, it is essential that the file PCANBASIC.DLL is located
in the same PCM2 folder as the programme files.
Separate installation of interface drivers is required.
Access to the system may be limited due to the assigned user rights, please see section 4.5 and
section 7.
If you disconnect from the system, communication will be re-established when you plug the cable
in again.
3.4 Wiring Harness
OBR can supply complete, custom made wiring harnesses for bespoke installations.
Our harnesses are manufactured by specialists, using only the best suitable materials for use in
the harsh environment of a modern racing or rally car.

Control Systems OBR Control Systems Inc
OBR Control Systems Inc Telephone : [phone] [e-mail]
32233 West 8 Mile Road www.obrcontrolsystems.com
Livonia, Michigan 48152
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4 Main Menu
The PC tool has 6 main menu sections:
4.1 File
You can open an existing configuration file by clicking on FILE and then select OPEN.
Use F2 as a hot key to open a new configuration file.
Default file location is in this folder: c:\program files\obr control systems\powerbox
You can save a configuration file on your PC by clicking on
FILE, then SAVE. Now select the folder where you want to
save the file (by default c:\program files\obr control
systems\powerbox), type a file name and click OK. Use F3
as a hot key to save a configuration file.
Click on Save Hex to save a configuration file as a hex file.
Use F4 as a hot key for this function.
You can display differences between two configuration files by selecting the function COMPARE
WITH. Please refer to section 6.
Click on EXIT to close the PCM2 tool. Use F7 as a hot key to close the programme.
4.2 Product
This tool supports two versions from the PCM2 product family:
- PCM2 is this 48-channel module.
- hPCM_AC is the 8-channel module, which has these main features:
o 8 high side outputs
o 2 CAN port with full routing option
o 8 analogue 0..5V sensor inputs
o 8 digital inputs
4.3 Device
4.3.1 Read
You can read the PCM2 configuration file by clicking on
READ in the menu DEVICE.
Use F8 as a hot key to read the configuration from PCM2.
4.3.2 Write
You can upload a new configuration from the PC tool to
PCM2 by clicking on WRITE.
Use F9 as a hot key to write a new configuration file to
PCM2. Once the new configuration file has been
transmitted to the PCM2, the module is re-booted
automatically.
An error message may pop up:
It is not possible to send a configuration file to PCM2 if more
than one event controls a single output.
Please see section 5.3.
Please note, that a configuration file can only be uploaded if the battery supply voltage is above 10
Volts.

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4.3.3 Reset
Use F10 as a hot key to re-boot the PCM2 manually.
PCM2 is automatically reset after a firmware update and also after uploading a new configuration.
4.3.4 Firmware
Click on FIRMWARE to update the PCM2 firmware. Once the firmware has been transmitted,
PCM2 performs an automatic re-boot.
A new firmware includes new PCM2 features and it is essential that you also update your PC tool,
too. The latest PC tool released is always backwards compatible. It can be used with older
versions of firmware, but new features in the tool will of course not work without a firmware update.
Use F6 as a hot key to update firmware.
4.3.5 Manual Output Mode
Manual Output Mode is used to check the switching and current draw of any output, manually
controlled by the PC tool.
When power is applied to PCM2 it starts by default in automatic mode.
In Manual Output Mode all events are deactivated and no automatic or programmed switching is
possible. Instead, it is only possible to switch each single output ON and OFF using the PC tool.
Go to section OUTPUTS for further information.
4.3.6 Automatic Output Mode
By clicking Automatic Output Mode PCM2 is switched back into automatic mode. Automatic mode
is also re-established if the PC tool is disconnected from PCM2.
4.3.7 Manual Output Mode, Keep Current States
When this option is selected, PCM2 is in manual operating mode, but keeps its setting from the
instant when it is switched into manual mode. Any output which were switched on, remains on in
this mode, but can be switched off manually if required.
4.3.8 Get Time
Click Get Time to read date and time from PCM2’s internal real time clock.
4.3.9 Set Time
Click Set Time to update PCM2’s real time clock with the date and time from the PC connected.
Ensure that your PC clock has the required time.
4.3.10 Reset Output Counters
Click this option to reset all diagnostic counters and error messages.
4.3.11 Get Firmware Checksum
Click this option to display current firmware version checksum. This is an essential feature if your
system is homologated using specific firmware releases, for example in accordance with FIA’s
requirements for WTC and WRC.

Control Systems OBR Control Systems Inc
OBR Control Systems Inc Telephone : [phone] [e-mail]
32233 West 8 Mile Road www.obrcontrolsystems.com
Livonia, Michigan 48152
USA 12 / 92
4.4 Interface
Click Interface and then select the USB-CAN interface
in use. Once the right interface is selected,
communication will be established between PCM2 and
the PC tool. No other action is required.
These interfaces are currently supported:
- CANUSB blue interface from Lawicel
- PCAN-USB interface from Peak Systems
- EFP02 or EF20 CAN interfaces from EFI Technology can be used
Communication status is displayed in the tool by a coloured LED in the upper right hand corner:
- Purple No or incorrect interface connected.
- Red No CAN communication.
- Green CAN communication OK.
4.5 Options
4.5.1 Reset Display
When disconnecting from PCM2 all display screens
in the PC tool would normally be reset when
disconnecting from the PCM2.
Tick this option to retain display information on
display screens when disconnecting from PCM2.
4.5.2 Sync Time Automatically
When connecting to PCM2, it is possible to automatically synchronise its real time clock with the
PC connected. Tick this option to synchronise the time and date between PCM2 and the PC.
4.6 User
It is possible to protect PCM2 from unauthorised access by configuring up to 5 individual user
levels and individually selected passwords:
 Read Only
 Read / Write
 Supervisor
 Administrator
 Partner (full access by default)
Please refer to section 7 for description of this feature.
4.7 Help
Click HELP TOPICS to open the PCM2 help file.
Use F1 as a hot key to open the help file. (Feature not implemented in this release).
Click About to display tool release version.

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OBR Control Systems Inc Telephone : [phone] [e-mail]
32233 West 8 Mile Road www.obrcontrolsystems.com
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USA 13 / 92
5 Functions
The PCM2 PC
tool is divided into
sub sections.
When the programme opens, it displays the Overview section by default.
5.1 Overview
This section displays the following PCM2 information:
Serial Number
PCM2 production serial number.
Information entered by OBR during assembly.
Intended Serial Number
The actual configuration can only be used with a PCM2
having this serial number.
Hardware version
PCM2 hardware release version. Information entered by OBR
during assembly.
Power Box Name
Reference name for actual powerbox. Maximum 15 characters can be used.
The PC tool displays the actual firmware version in this section, see “Configuration Utility Version”.
5.2 Units
Use this section to assign a unit to analogue and CAN channels. These settings
can be applied in INPUTS, sections “Analogue Inputs” and “CAN Inputs”.
5.3 Event Handling
PCM2 is controlled by configurable events. Events are used to create simple as
well as complex logic conditions. For example, a digital input can switch a single
output using a single event, or by a complex string of events.
Please note that an output must be controlled by a single event.
512 individual events are available and each can be defined as a specific type:
5.3.1 Event Type
Select between the following types of control strategies.
5.3.1.1 Input follow
Name the event to make it easy to trace it later.
Select the input trigger for the event.
Set the conditions for switching between true and false.
For example, selecting a digital input, the event is ON when the switch is ON. It is OFF when the
digital switch is OFF.
Select the output to trigger. Select NONE if this is a conditional event only.

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5.3.1.2 Input toggle
Name the event to make it easy to trace it later.
Select the input trigger for the event.
Set the conditions for switching between true and false.
For example, selecting a digital input, the event will switch ON when the switch is pressed
momentary ON. It will switch OFF when the digital switch is pressed again momentary.
Select the output to trigger. Select NONE if this is a conditional event only.
5.3.1.3 AND gate
The AND gate combines up to five events to set switching conditions.
All added events have to be true for the final event to be true.
Input A
Input B
Output
0
0
0
0
1
0
1
0
0
1
1
1
Select the output to trigger. Select NONE if this is a conditional event
only.
5.3.1.4 OR gate
The OR gate combines up to five events to set switching conditions.
Any of the added events have to be true for the final event to be true.
Input A
Input B
Output
0
0
0
0
1
1
1
0
1
1
1
1
Select the output to trigger. Select NONE if this is a conditional event only.
5.3.1.5 NOR gate
The NOR gate combines up to five events to set switching conditions.
If any of the added events are true, the final event will be false.
Input A
Input B
Output
0
0
1
0
1
0
1
0
0
1 1 0
Select the output to trigger. Select NONE if this is a conditional event only.
5.3.1.6 XOR gate
The XOR gate combines up to five events to set switching conditions.
When one and only one of the added events are true, the final event will be true.
Input A
Input B
Output
0
0
0
0 1 1
1 0 1
1
1
0
Select the output to trigger. Select NONE if this is a conditional event only.

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5.3.1.7 NOT gate
The NOT gate inverts a single input event.
Input A
Output
0
1
1
0
Select the output to trigger. Select NONE if this is a conditional event only.
5.3.1.8 Flash
Defining a flash event it is possible to set:
- Time ON (how long time is the output switched ON)
- Time OFF(how long time is the output switched OFF)
- Initial status, ON or OFF (Flash starts with output switched ON or OFF)
Select the output to trigger. Select NONE if this is a conditional event only.
5.3.1.9 Delay input ON
Using this event it is possible to set a delay timer for switching the event to true.
5.3.1.10 Delay input OFF
Using this event it is possible to set a delay timer for switching the event from true to false.
5.3.1.11 Counter Increment
This event is used to count sequence increments and is linked with
the counters defined in section 5.6.
This event will generate a count each time the event it is linked to,
changes from false to true.
The sequence in which it counts is defined in section 5.6, Counters.
Use this event within any other event to trigger outputs or conditions
when certain count values are reached.
5.3.1.12 Counter Decrement
This event is used to count sequence decrements and is linked with
the counters defined in section 5.6.
This event will generate a count each time the event it is linked to,
changes from false to true.
The sequence in which it counts is defined in section 5.6, Counters.
Use this event within any other event to trigger outputs or conditions
when certain count values are reached.
5.3.1.13 Reset
Use this event to define a reset function for output channels. The
reset function will restart outputs which are in a fault status only. No
other channels are influenced.
The reset function can be used with any input or output and any channel status or current draw.
A typical installation combines the fault warning light and a reset switch.
PCM2 has a dedicated output for a fault warning light. Pin 42 in connector #4 provides a 5 volt
signal out in case one of the output channels goes into a fault mode.

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It is recommended to use a LED with a 1 kOhm resistor in-line as a
warning light, but a conventional light bulb can be used, too.
Observe the current draw does not exceed 1A.
The reset function could be based on grounding the warning light
signal when ON, creating a fault.
Grounding the warning lamp will cause a current draw in excess of
1A so you must ensure your wiring can withstand such current level.
Creating a Reset event on this strategy, proceed this way:
- Select RESET as an event type.
- Name the event, for example “RESET”.
- Select “Fault – Warning Lamp” as source input
- Set “Turn ON” as “>1”.
- Set “Turn OFF as “< 2”.
We can supply a combined switch and a 5 volt LED warning light.
Refer to section 5.9 for fault message codes.
5.3.1.14 Clock
Use this event to link the switching to the real time clock.
5.3.1.15 Always ON
Use this event to switch the event to true once power is applied to
the PCM2, for example when the master switch is ON.
5.3.1.16 Tri-state output
The tri-state outputs are used as triggers for external systems. Their value can change between 0,
2.5 and 5.0 volts.
Do not expose these outputs to any load, they are trigger channels only.
5.3.1.17 Wiper output
Two dedicated wiper channels are available. These channels are fitted with braking diodes,
ensuring the wipers stop when the park signal is detected.
Create an event for the park signal. The park signal can be either a ground or battery power signal.
Import this event as the Stop event.
Select an input to trigger the wiper. When this input is switched OFF, the wiper motor will continue
running until the park signal is detected.
Please refer to section 5.3.1.21 for an event controlled wiper function.
5.3.1.18 Event Flash
Use this function if an event is required to trigger the flash function.
See 5.3.1.8.
5.3.1.19 Event Delay On
Use this function if it is required to delay switching an event controlled output ON.
5.3.1.20 Event Delay Off
Use this function if it is required to delay switching an event controlled output OFF.

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5.3.1.21 Event Wiper
The wiper function can also be controlled by an event instead of a
direct input as described in section 5.3.1.17.
Using this function makes it possible to combine wiper strategies, for
example combining the wipe wash and wipe delay with normal wiper
function.
5.3.2 Event Name
Name the even for easy identification.
5.3.3 Source Input
Select the input controlling this event.
Inputs can be:
- Digital inputs
- Analogue inputs
- Current draws
- Fault status
- CAN inputs (from all four CAN ports)
- Counters
- Temperature
5.3.3.1 Fault Status
To detect a failed PCM2 output create an event for each output.
 Select Event Type as Input Follow.
 Name the event, for example Fault LP01.
 Select the input as the Fault for the actual output, for
example called Fault LP01.
 Set the threshold for detecting an error to “>1”.
 Set the threshold for detecting no fault to “<2”.
 Click Save.
The value for registering an error must be greater than 1 (>1) because 0 indicates OFF while 1
indicates ON. An error condition generates a code value of typical 16 and greater.
No error codes will have values less than 2, therefore the cancellation of error detection must be
set to a value less than 2 (<2).
5.3.4 Turn ON / Turn OFF
Select the conditions for switching On (or OFF):
- = Equal to
- < Less than
- > Greater than
- <= Less than or equal to
- >= Greater than or equal to
- != Not equal to
5.3.5 Event 1 / 2 / 3 / 4 / 5
Select events as inputs to set conditions in these types of events:
- AND gate
- OR gate
- NOR gate
- XOR gate
- NOT gate

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- Tri-state outputs
- Wipers
- Event Flash
- Event Delay On
- Event Delay Off
5.3.6 Time (ms)
Set the On and OFF timers for use with these functions:
- Flash
- Delay Input On
- Delay Input Off
5.3.7 CAN Inputs – Lost CAN Action
For safety reasons it is possible to set conditions for channels controlled via CAN.
If the CAN bus communication is lost at any time for a defined time interval (in milliseconds) the
following actions can be defined, individually for each CAN invent:
- Do nothing (keep current status)
- Turn Off (switch the output off when the CAN lost timer expires)
- Turn On (switch the output on when the CAN lost timer expires)
5.3.8 CAN Lost Timer
This defines a time interval for receiving CAN messages. If a given CAN message is not updated
within the time interval, the system considers the CAN bus has gone into fault mode.
DO NOT SET THIS INTERVAL TO 0 (ZERO)!
It is recommended to use an interval of app. 2.5 times the message update rate. For example, if
the update interval is 100 msec, it is recommended to set the time interval to 250 msec. During this
time interval the system should recognise 2 messages, confirming the CAN bus is functioning.
Select which output this event controls.
Select NONE if this is a conditioning event which is part of a logic switch string.
It is essential that only one (1) event controls a given output. If multiple switching conditions apply,
these must be joined in a single, final event, for example an AND, OR etc event,
5.3.9 Start State
Use this function to define whether a flash function starts having the output switched ON or OFF.
5.3.10 Output
Select an output to be triggered by the event. If the actual event is a conditional event, no output is
selected.
5.3.11 Multiplier
Not in use in this software release.
5.3.12 Counter
Refer to sections 5.3.1.11, 5.3.1.12 and 5.6 for a description of the counter features.
Select a configured counter to use with the Counter event.
5.3.13 Clock
This feature is used with the Clock event.
Set time for switching On and set a time for switching Off.
Click “Save” to save the event configuration.
Click on the “Visualise” button to open the visualisation display. See section 8.

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5.4 Miscellaneous
 PCM2 minimum voltage (recommended setting 6,000 mV)
The battery voltage level has to drop below this low threshold for 10 seconds before
outputs are switched off. The voltage level has to rise above the minimum voltage level plus
500 mV for minimum 10 seconds before outputs are turned on again.
 PCM2 maximum voltage (recommended setting 30,000 mV)
The battery voltage level has to rise above this high threshold for 10 seconds before
outputs are switched off. The voltage level has to drop below the maximum voltage level
minus 500 mV for minimum 10 seconds before outputs are turned on again.
5.5 Special Functions
It is possible to assign outputs to switch ON or to switch OFF when specific events are selected,
independent of the event status.
Switching outputs are controlled by this order of priority:
- 1st order of priority is Special Functions OFF
- 2nd order of priority is Special Functions ON
- 3rd order of priority is normal event handling
5.5.1 Special function ON
It is possible to switch outputs ON when selected events becomes true.
This switch status overrides normal event handling as it has the highest applied priority.
It is possible to select up to 8 individual events controlling the special function ON.
For each of these events it is possible to select individual outputs which must switch ON when the
condition is true.
To turn a specific output ON when the input event is true tick the box for the outputs as shown.
Please note that tri-state outputs are forced to +5V when activated through special event ON.
5.5.2 Special function OFF
It is possible to switch outputs OFF when selected
events become true.
This switch status overrides normal event handling as
it has the highest applied priority.
It is possible to select up to 8 individual events controlling the special function OFF.
For each of these events it is possible to select individual outputs which must switch ON when the
condition is true.
For example, to preserve battery power during cranking,
PCM2 is requested to switch high current consumption
outputs off.
Create an event for activating the starter solenoid.
Set this event for example as EVENT 01.
Click on Set Output Map to open the configuration
tables. Each PCM2 output can be linked to 8
conditioning events.
To turn a specific output OFF when the input event is
true tick the box for the outputs as shown.
Please note, that special function maps have overall priority over any event controlled function.

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5.6 Counters
This section is used to define PCM2’s ability to count sequences.
16 individual counters are can be configured.
Two types of counters are available; one counting up to maximum 255 and one counting down
from maximum 255.
Sequences are counted from 0 to the value in End or from the value in End to 0.
It is possible to cycle counts using a count number different to 0 by entering a value in Start.
Counters which are defined in this section are used in events to create conditions – please see
sections 5.3.1.11 and 5.3.1.12.
Counters count up or down in steps of 1.
5.6.1 Increment Action
It is possible to set a maximum number of counts. This can be any number between 0 and 255.
The maximum number of counts is entered in the column named End.
In column Start is set the sequence number at which the counts cycle from. This can be any
number between 0 and the number entered in End.
It is possible to select the required action for the increment counter.
In column Inc Action it is possible to select between:
 Stop at End
With this setting the counter will count up from 0 only once to until reaching
the value set in End.
 Loop End to Start
 With this setting the counter will count up from 0 until it reaches the value in
End, then return to Start and start counting up again.
 Loop End to Zero
 With this setting the counter will count up from 0 until it reaches the value in End, then return to
0 and start counting up again.