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Essernet Loop Attenuation
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Loop is too long or attenuation too high: FlexES Trouble Code | Fire Alarm Resource Center
Loop is too long or attenuation too high
trouble
ESSER FlexES
70 views
What This Code Means
Signal strength is too low due to excessive loop length or high cable resistance.
Common Causes
1
Loop length exceeds maximum limits
2
Incorrect cable type used (e.g., non-IBM or non-transmission cable)
3
High resistance connections
Resolution Steps
Verify loop length and resistance (max 70-100 ohms/km depending on cable); reduce length or upgrade cable if necessary.
Manual References
(1)
1
esser
FlexES Control
Installation
2010
p. 71, 3, 2, 49, 87 +4
Open
Getting Loop is too long or attenuation too high on your FlexES?
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Field Notes
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Related Codes
essernet connection interruption
A break or wiring error has been detected in the essernet communication loop.
Panel or essernet device not receiving power
A device on the essernet is not receiving power or is completely disconnected.
Battery Fault
The FACP indicates a fault when battery resistance is too high, voltage drops below the discharging limit, or a connection/fuse issue is detected.
EARTH FAULT
The system has detected an unintended connection to ground or an incorrect configuration of the earth fault detection jumpers on multiple power supply modules.
Wrong address setting
The essernet module has detected an invalid or conflicting address configuration after a restart.
Related Questions
What do the common FlexES error codes mean, such as Loop Fault, Short Circuit, and Device Not Responding?
How do I reset a fault condition on the Esser FlexES panel after replacing a detector on the loop?
How do I program new esserbus Plus detectors and modules into the FlexES panel using Tools 8000 software?
Loop is too long or attenuation too high
trouble
ESSER FlexES
70 views
What This Code Means
Signal strength is too low due to excessive loop length or high cable resistance.
Common Causes
1
Loop length exceeds maximum limits
2
Incorrect cable type used (e.g., non-IBM or non-transmission cable)
3
High resistance connections
Resolution Steps
Verify loop length and resistance (max 70-100 ohms/km depending on cable); reduce length or upgrade cable if necessary.
Manual References
(1)
1
esser
FlexES Control
Installation
2010
p. 71, 3, 2, 49, 87 +4
Open
Getting Loop is too long or attenuation too high on your FlexES?
Ask TroubleShooter AI for help
→
Field Notes
Loading field notes...
Sign in
to share a field note
Related Codes
essernet connection interruption
A break or wiring error has been detected in the essernet communication loop.
Panel or essernet device not receiving power
A device on the essernet is not receiving power or is completely disconnected.
Battery Fault
The FACP indicates a fault when battery resistance is too high, voltage drops below the discharging limit, or a connection/fuse issue is detected.
EARTH FAULT
The system has detected an unintended connection to ground or an incorrect configuration of the earth fault detection jumpers on multiple power supply modules.
Wrong address setting
The essernet module has detected an invalid or conflicting address configuration after a restart.
Related Questions
What do the common FlexES error codes mean, such as Loop Fault, Short Circuit, and Device Not Responding?
How do I reset a fault condition on the Esser FlexES panel after replacing a detector on the loop?
How do I program new esserbus Plus detectors and modules into the FlexES panel using Tools 8000 software?
