Trane TRACER SUMMIT BAS-APG001-EN Manuel D’Utilisation

The Status LED on the EX2 module operates differently from the status 
LED on LonTalk devices. Table 25 describes EX2 Status LED activity. 

The LEDs labeled TX and RX indicate the communication status of the 
EX2 module. Table 26 describes the LED activity.

LED is on continuously

Power is on and the unit is operating normally.

LED blinks twice

The EX2 has not received its configuration from 
the Tracer MP580/581. Use the Rover service 
tool to make sure that the Tracer MP580/581 is 
correctly configured for use with the EX2 mod-
ule. Check the I/O bus wiring.

LED blinks once

The EX2 is not communicating on the I/O bus. 
Check the communications LEDs described in 
Table 26 for more information.

LED is off continuously

Either the power is off or the controller has 
malfunctioned.

Both LEDs blink regularly

The EX2 is communicating with the Tracer 
MP580/581 on the I/O bus. (If the LEDs blink nor-
mally but the EX2 is not working properly, make 
sure that I/O bus addresses are not duplicated.)

Both LEDs are off 
continuously

The EX2 is not communicating on the I/O bus. 
Either the I/O bus wiring is faulty or the Tracer 
MP580/581 has not been configured to use the 
EX2 module. Use the Rover service tool to con-
figure the Tracer MP580/581 for use with the 
EX2 module.

RX LED blinks, 

 

TX LED is off

The EX2 is receiving communications from the 
Tracer MP581 (either for itself or another EX2) 
but cannot send communications. Either the 
module is not configured in the Tracer MP580/
581 or its I/O bus address is incorrect. Use the 
Rover service tool to configure the Tracer 
MP580/581 for use with the EX2 module. Make 
sure the DIP switches are set for the correct I/O 
bus address (“Setting the I/O bus addresses” on 
page 93). 

RX LED is on continuously, 
TX LED is off

Polarity is reversed on the I/O bus wiring. Swap 
the wires at the plus (+) and minus (–) I/O bus 
screw terminals on the EX2 module.