Desktop I/O Simulator

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The Desktop I/O Simulator TM is a new advance in development support from MotoTron!

Desktop I/O Simulator

DeskSim-2.png The Desktop I/O Simulator is designed to assist in developing control programming for a Woodward ECM; this practical device enables you to more easily simulate and adjust analog input levels (via onboard potentiometers), monitor output, test application scenarios, etc., without requiring the actual sensor connections.

The Simulator has I/O, CAN connections, power and ground channels, keyswitch, and other features as applicable, which map to the respective resources of the ECM in use.

Connect the ECM to the Simulator, using the appropriate available harness. Connect a computer with programming and calibration tools to the ECM via CAN or RS485 connection to the mounted CAN junction box, or floating connectors. Then use the Simulator to adjust input levels, drive output loads, monitor I/O signals, verify parameters, and as a result better understand and adjust the control programming needed, without using actual application hardware.


Feature Summary

  • Aluminum frame, angle-mounted for ease of use, with scratch-free rubber feet
  • Over 200 banana jacks in total for I/O - connect inputs or meters/oscilloscope to outputs
  • 30 Channels of Analog Input (switchable - On / Off) with dedicated potentiometer sliders
  • 45 Channels of Low or High Side Output (switchable - On / Off)
  • 3 CAN Channels (switchable - On / Off)
  • 1 RS485 Channel (switchable - On / Off)
  • 8 Digital Inputs (switchable - On / Off or pulled High / Low)
  • 10 Power and Ground Channels (switchable - On / Off) , including ECM Input Voltage+/-, XDRP, XDRG, MPRD, DRVP, DRVG, and Key Switch
  • 4 Knock sensor inputs
  • 4 CAM/Crank inputs
  • 11 Non-assigned banana jacks

Note: Depending on the ECM resources available, some of the jacks may not be mapped or connected to any resource from the ECM. Refer to the datasheet for your particular ECM to determine the resources available (obtain from the ECM datasheet download page on the MotoTron website). It is best to check and verify the presence of the intended Simulator/ECM resource before attempting to apply in a test scenario.


Product Specification

Simulator product Specification (36369)
LECM Desktop Simulator Kit (35078)

Power and Ground Channels

The Power and Ground Channels are located in the center of the Simulator, and include BATT, XDRP A/B, XDRG, MPRD, DRVP, DRVG, EST RTN, and Key Switch. These are connected to the ECM via the harness, though the jacks allow optional external connections.
Power-3a.png

Note: Connection to a 12V DC (nominal) power supply is required. The Desktop I/O Simulator has a positive and a negative connector for use with a power supply. Do not use a supply higher than 36V DC, as the LED circuits are not able to withstand this.

Power-DRWG-1a.png
  • KEY SWITCH: The KEY SWITCH interface includes a top, vertical-direction ON/OFF switch, which connects directly to the key-switch (ECUP) input to the ECM, to turn the ECM keyswitch on/off. The other, side-to-side switch enables/disables the ON/OFF function of the top switch. The red jack allows connection of an external keyswitch input. Note: Some ECMs use the key switch input, others do not. Refer to the datasheet for your ECM.
  • MANUAL/DVRP: You can turn the DVRP to the ECM on/off via the MANUAL/DVRP ON/OFF switch, if the DVRP switch (below) is set to MANUAL. The other, side-to-side switch enables/disables the ON/OFF function of the top switch.
  • DVRP: You can turn the MANUAL DVRP on/off via the DVRP ON/OFF switch. When the switch is OFF, the DRVP power is automatically supplied. When ON, use of the MANUAL DVRP ON/OFF switch controls the DVRP power.
  • LEDs: The MPRD indicator LED is ON when MPRD power is ON (as a result of turning on the ECM). The DVRP indicator LED in ON to indicate the DVRP power to the ECM is ON.
  • STOP (DG8): The STOP interface includes a top, vertical-direction LOW/PULL-UP, which connects directly to the E-STOP input to the ECM (the DG8 input acts as a STOP input on the 128 pin ECM). The other, side-to-side switch enables/disables the ON/OFF function of the top switch. The red jack allows connection of an external STOP input.


Power-DRWG-2.png
  • XDRP A/B: The two XDRP jacks, A and B, each include a side-to-side ON/OFF switch, which turns the respective transducer power on/off.
  • BATT: You can turn the battery power to the ECM on/off via the BATT ON/OFF switch.
  • MPRD: You can turn the power to the main power relay driver on/off via the MPRD ON/OFF switch.
  • LEDs (see drawing above): The MPRD indicator LED is ON when MPRD power is ON (as a result of turning on the ECM). The DVRP indicator LED in ON to indicate the DVRP power to the ECM is ON.


Power-DRWG-3.png

  • EST RTN: The EST RTN input provides connection to the EST return resource on the connected ECM. You can connect or disconnect the EST return to the ECM via the EST RTN ON/OFF switch.
  • XDRG: You can connect or disconnect the transducer ground to the ECM via the XDRG ON/OFF switch.
  • GROUND: You can connect or disconnect the power ground to the ECM via the GROUND ON/OFF switch.


  • DVRG: You can connect or disconnect the driver ground to the ECM via the DRVG ON/OFF switch.




Communications

The Simulator supports connecting up to three CAN channels, and a RS-485 channel. The jacks are located at the right side of the Simulator just below the Junction box and above the harness connector. Each connection includes an OFF/ON switch to disable/enable the channel connection.


CAN-3.png

Output Sections

These outputs connect to your ECM output pins, by designation, and in order of resource number. Refer to the datasheet for your particular ECM for resources available. Depending on the resources of the particular ECM in use, some of the Simulator output jacks may not be in use.


LSO-one-1.png
  • LEDs: The LEDs above the outputs show status; LEDs turn on green if a Low Side Output is active and set up as “low-side,” for example, and show red if the output is active as “high-side.”
  • ON/OFF: You can turn the output on/off via the switch. When off, the yellow (top) jack is inactive; the monitor (gray) jack is usable with the switch in either the ON or OFF position.
  • Output jacks: The top jack (yellow) of each output directly connects to the respective ECM output resource. Output characteristics of the respective ECM resource are thus conveyed.
    The lower (gray) jacks are the respective voltage-level monitors only.



Low Side Outputs

Labeled LSO1-LSO8, eight Low Side Outputs are located in the upper left corner of the Simulator.
LSO-3.png

INJ Outputs

Labeled INJ1-INJ12, twelve fuel injector Outputs are located at the left side of the Simulator.
INJ-3.png

EST Outputs

Labeled EST1-EST16, the 16 electronic spark timing Outputs are located at the left side of the Simulator.
Note: In order to see EST firing indications, turn the respective EST LED ON/OFF switch to OFF.
EST-3.png

H-Bridge Outputs

Labeled H1+, H1-, H2+, H2-, and H3+, H3-, the six H-bridge connections are located at the top center of the Simulator.

HB-3.png


Analog/Digital Input Sections

Analog Inputs

Labeled Analog 1-Analog 30, the Analog Inputs (switchable - On / Off) are located along the bottom of the simulator, together with dedicated potentiometer sliders, 0-5V.

Note: To connect your own sensor, use the gray jack, and switch the corresponding ON/OFF switch to OFF.

An-in-DRAW-2.png An-in-3.png

Digital Inputs

The Simulator supports up to seven digital inputs, labeled DG1-DG7. The jacks are located at top center of the Simulator.
DG-3.png

The digital inputs each have a switch for setting input to low or pull-up, along with on-off switches.


DG-drwg-2.png
  • LOW/PULL-UP: Switch input as needed for either pull-down or pull-up connection.
  • Input jacks: The top jack (green) of each output directly connects to the respective ECM input resource.
  • ON/OFF: You can turn the input on/off via the switch. When off, the green (top) jack is inactive; the monitor (gray) jack is usable with the switch in either the ON or OFF position.


Knock Sensor Inputs

Labeled Knock0 -/+ and Knock1 -/+, the four knock sensor connector jacks are located in the center of the Simulator. There are no associated switches or monitors; user must supply the knock input signal to the Simulator.
Knock-3.png


Cam/Crank Inputs

The four Cam and Crank inputs are located at the top of the Simulator, labeled CAM and DG CAM, and Crank+/-. There are no associated switches or monitors; user must supply the respective sensor input signal to the Simulator.
CAM-3.png

Miscellaneous Non-assigned Jacks

There are 11 non-assigned jacks, reserved for future assignment.
Misc-3.png

Simulator Harnesses

Get the appropriate harness for the ECM in use.


Part # Harness # ECM Family
5404-1199 HARNINTR023A To 24-Pin - GCM0565024/ECM0S12024 (ISDL/SECM)
5404-1200 HARNINTR023B To 24-Pin - GCM0S12024 (MCHI/MSIM/SMUX)
5404-1201 HARNINTR024A To 48-Pin - ECM0555048
5404-1202 HARNINTR024B To 48-Pin - ECM0563048
5404-1203 HARNINTR024C To 48-Pin - GCM0563048/HCM0563048 (FIRE 48)
5404-1204 HARNINTR025A To 80-Pin - ECM0555080
5404-1205 HARNINTR026A To 112-Pin - ECM555x112
5404-1206 HARNINTR027A To 128-Pin - ECM0565128
5404-1321 To 112-Pin, SECM112
5404-1341 To 70-Pin, SECM70

Connect the required harness to the harness connector on the Simulator.
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