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Diagnostic interfaces
9 Diagnostics and troubleshooting
Instruction book, IQAN-MC3
9 Diagnostics and troubleshooting
Diagnostic interfaces
IQAN software includes many tools for tuning, measuring, accessing logs and
otherwise checking the performance or troubleshooting your control system.
CAN diagnostics connection
One of the 4 CAN buses of the IQAN-MC3 may be dedicated for diagnostics.
Reserving a bus for diagnostics ensures that signals are not interrupted by other bus
traffic. A high-speed CAN interface is needed to use this feature. Contact Parker for
information about supported CAN interfaces.
A termination resistor is usually required at the CAN interface on the PC. Parker part
number 5030182 or an equivalent 120 ohm resistor may be used. A flying lead cable
may be connected to the IQAN-MC3 to provide a connector interface. The connection
from IQAN-MC3 to diagnostic CAN interface can then be made quite easily. It is
recommended that the diagnostic connector be a sealed, automotive type. When not
being used this connector should be protected from the environment with a cover or
mating blank plug.
The recommended wiring to the IQAN-MC3 connector C1 is shown below.
Connecting for CAN to PC communication.
Bypass application
If the ADDR_L pin is shorted to ADDR_H, (detected when the unit starts/powers up)
the application will not be loaded. This is a special start-up mode that is used for master
units and puts the MC3 in a safe state without starting any application. When this mode
is desired, a jumper is put in place of an ID-Tag.
Customer
IQAN-MC3
120 ohm
CAN-L
CAN-H
resistor
specified
connector