Cascadia PM Series - CAN Interface; RS-232 Interface

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1/14/2021 RMS PM Hardware User Manual 42 of 54
3.7.5 CAN Interface
The controllers have one active CAN interface CAN A. The controller contains hardware to
support a second CAN interface (CAN B), but currently only CAN A is active. CAN B is
reserved for future use. Refer to the CAN Protocol document for the various ways that the
CAN bus can be configured.
The CAN interface has multiple purposes:
• Provides direct control of the motor
• Provides diagnostic and monitoring capabilities
• Provides user-adjustable configuration
The user can change the following hardware related configuration parameters:
• Inverter Command Mode: Setting this parameter to 1 allows the CAN mode to become
active.
• CAN Bus Speed: Allowed speeds are 125 Kbps, 250 Kbps, 500 Kbps, or 1 Mbps. Enter
125, 250, 500, or 1000 to program the configuration parameter.
• CAN Terminator Resistor: The resistor can be applied or opened (PM Family only).
For more information on CAN interface and messages, please refer to the CAN Protocol
manual.
3.7.6 RS-232 Interface
There is one RS-232 serial interface. This port can be used to set up and tune the controller,
and to download controller software updates from a PC. A simple Windows PC based
software package for monitoring and changing parameters (RMS GUI).
The drive can also be placed in a data-logging mode, and used with a PC or other serial
device the unit broadcasts datasets at 3Hz of a number of parameters that allow
performance and energy consumption data to be gathered in real time.
For more information on RS232 data logging refer to the SCI Data Acquisition manual.