Chapter 7: Service and troubleshooting
P/N 3101890-EN • REV 006 • ISS 21JUN18 159
description Suggested corrective action
Mapping was aborted by an external event, such a new
start on a device (a
map rebuild was scheduled)
Wait for automatic map reconstruction to complete
before continuing
Mapping supervision detected he device type of the
device bein
g supervised changed (a map fault was
• Replace the device
• Correct the loop controller programming
Mapping aborted because a short or open was detected
on the
loop wiring
• Check for an open or short on a Class A circuit
• Check for a short across the entire Class B circuit
• A reset may restart mapping
is not able to recreate the current map Wait for automatic map reconstruction to complete
before continuing
Assigning a short address to a device failed, possibly
causing
duplicate short addresses and mapping failures
• Review the Chain Response and
lists on the Device Chains tab to identify the failed
device
• Replace the device
• Check for a wiring fault
is disabled Enable mapping
rom a device back to the loop
controller, the chain appears to have two devices at the
same location in the chain
• Check for faulty wiring or a faulty device on the
loop
• Review the Chain Response and
lists on the Device Chains tab to identify the
conflict
-of-line devices are detected on the
• Correct the wiring
• Remap the circuit
• Reduce the number of T-taps
While mapping a chain from a device back to the loop
controller, a device
displays past the end of the chain
• Review the Device Chains list
•
Compare the serial numbers or addresses with the
actual wiring to identify the problem
Mapping detected a difference between the device at
the end
-of-line and the devices in its chain
• Review the Device Chains list to identify the
conflict
•
Compare the serial numbers or addresses with the
actual wiring to identify the conflict
Device chain diagnostics
A chain is a list of devices connected between the loop controller and a device being interrogated during circuit
mapping. The chains and subchains created during the mapping process create a circuit map. If a circuit fails to
map properly, investigate the devices making up chains and subchains to find the reason. Click the Device
Chains tab to display a chain generated during the failed mapping process. Press F1 to open the Help topic that
provides instructions and descriptions for the information provided.
Examine the chain and look for gaps within the address or serial number lists in a chain or subchain.
• Gaps in the list indicate areas that were not successfully mapped. A gap within the chain does not mean that
the missing device has a problem; it means that the device was not successfully mapped.
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