Lutron Radio Touch RTA-RS232 Guide D'installation Et De Mise En Service page 25

Troubleshooting
Symptom
The unit does not power up
(the power LED does not light
up).
The RS232 interface does not
communicate with the host.
The RS232 interface reacts to
host commands, but there is
no feedback from the RS232
interface.
Data flows between the host
and the RS232 interface, but
the system does not respond.
Data flows between the host
and the RS232 interface, but
the system does not respond
as desired (e.g., shade activity
instead of light activity).
R
Possible Cause(s)
Loss of power.
Faulty power supply.
Communication cable is miswired.
Communications cable is loose.
Data flow control settings for the
two devices are not the same.
Improper communications settings
Host has not received "Prompt"
from RS232 Interface (SW flow
control only).
Receive line in communications
cable is loose.
RB mode is turned off.
The RS232 interface is out of
range.
Zones are not configured properly.
The RS232 interface is in
configuration mode.
The rest of the system does not
have power.
The RS232 zones are not
configured properly.
RadioTouch
TM
Solution
Check circuit breaker and connection at
unit.
Verify power supply is operating properly.
Verify the pinout on the cable, rewire if
necessary.
Check cable connections.
Check the data flow control settings for
both devices. Make sure both are set to
desired setting.
Check the communications settings on the
host and verify they comply with the
RS232 Interface requirements.
Have host issue "PING" command to kick-
start data flow.
Check connections on communication
cable.
Turn RB mode on.
Verify the interface is within 35 ft. (10.7 m)
of all RadioTouch controllers.
Verify zones are configured for proper zone
type (lights or contact closures).
Exit configuration mode.
Apply power to the rest of the system.
Verify zones are configured for proper zone
type (lights or contact closures).
RTA-RS232 Programming and Operation Guide 25