Chapter 7 Troubleshooting
34 CNT-SVX09B-EN
Table 15. Binary output (relay output) troubleshooting of configuration and operation
Step number Action Probable cause
Step 1 Connect the Rover service tool to the LonTalk communication link, start the
Rover service tool, and select the Tracer MP503 you are troubleshooting from
the Active Group Tree. The device plug-in for the selected Tracer MP503 will
appear with the Status screen displayed in the workspace.
See the Rover Operation and Programming guide (EMTX-SVX01B-EN) for
more information.
—
Step 2 Select the Bindings button to view the Network Variable Bindings Summary
screen for the LonTalk network that includes this Tracer MP503. (The Bindings
button will be disabled if the Tracer MP503 is the only device currently on the
network.) Is this binary output bound? Is it bound to more than one network
device? If it is bound to two devices, one may be commanding the binary
output on while the other commands it off.
For more information about network bindings, see Chapter 5, “Network vari-
able bindings.”
Bindings problem
Step 3 If the binary output is correctly bound to another device, is that device com-
municating? If it has not communicated for at least 15 minutes, the binary
output will go to its communication loss position. The communication loss
position is configurable using the device plug-in. Proceed to the next step to
view or edit the communication loss position of the binary output.
Network commu-
nications problem
Step 4 To view the communication loss position of the binary output, select the
Close button to return to the Status screen. Press the Configuration button,
then select the Outputs tab.
The communication loss position for a binary output can be set to On, Off, or
Last State. For example, if you expect the equipment controlled by the binary
equipment to be on but it is off because of the communication loss position,
you may want to change the communication loss position from Off or Last
State to On.
Incorrect commu-
nication loss posi-
tion
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