TM3 CANopen Bus Coupler Presentation

Overview

The TM3 CANopen bus coupler is a device designed to manage CANopen communication when using TM2/TM3 I/O expansion modules in a distributed architecture.

The main elements of the TM3 CANopen bus coupler are:

1 Rotary switches

2 Expansion connector for TM2/TM3 I/O expansion modules

3 Two (2) isolated RJ45 CANopen ports (daisy-chained)

4 USB mini-B configuration port

5 24 Vdc power supply

6 Clip-on lock for 35 mm (1.38 in.) top hat section rail (DIN rail)

7 Status LEDs

Main Characteristics

Characteristic	Value
Nominal supply voltage	24 Vdc
Weight	100 g (3.53 oz)
Rotary switch	2
CANopen port	2 isolated RJ45 ports for CANopen (daisy-chained).
Power supply connection type	Removable screw terminal block

Status LEDs

The following graphic shows the LEDs of TM3 CANopen bus coupler:

The following table describes the status LEDs:

LED	Color	Status	Description
PWR	Green	On	Power is applied.
PWR	Green	Off	Power is removed. All LED indicators are off.
RUN	Green	On	Device status is operational.
		Flickering	In conjunction with a flickering ERR LED, automatic search for the bus communication speed.
		Flashing	Device status is pre-operational.
		Single flash	Device status is stopped.
		Triple flash	Firmware upgrade.
ERR	Red	On	Bus off.
		Flickering	In conjunction with a flickering RUN LED, automatic search for the bus communication speed.
		Flashing	Invalid CANopen stack configuration.
		Single flash	An internal error counter in the CAN controller has reached or exceeded the error frame limit threshold (error frame).
		Double flash	Error control event detected. Detection of a guard event (NMT-Slave or NMT-master) or a heartbeat event (Heartbeat consumer).
		Triple flash	Synchronization error detected: message not received from sync producer within the defined period.
		Quadruple flash	Event-timer error detected: An expected PDO has not been received before the event-timer elapsed.
		Off	No error detected.
I/O	Green	Flashing	Device has received and applied the expansion modules configuration.
	Green	On	Device is communicating with the expansion modules.
	Red	Single flash	Expansion module configuration transfer timeout.
	Green Red	Flashing On	The physical configuration is inconsistent with the software configuration. No data exchange (status and I/O) is occurring.
	Green Red	On On	The physical configuration is inconsistent with the software configuration. I/O data is not applied.
	Green Red	On Flashing	At least one TM2 or TM3 expansion module did not respond to the bus coupler for 10 consecutive cycles.
	Green Red	Off	No configuration. Device is not communicating with the expansion modules.

This timing diagram shows the different LEDs flashing behaviors:

NOTE: With the exception of the PWR LED, each LED is ON for a few seconds, then OFF during the boot sequence. The LED behavior rules apply when the boot is completed successfully.