Edwards Signaling eFSA250 - Manual (Page 202)

Chapter 4: Reports
190 E-FSA64 and E-FSA250 Technical Reference Manual
generate a communication fault by showing the maximum number of retries for
the current hour and a summary of the past 24 hours.
The report can be used to identify devices with intermittent communication faults.
A device appearing in this report is an indication that the wiring to the device is
suspect. To investigate problem devices, inspect the wiring between the problem
device and another device not in the report. Inspect this section of wiring for
problems such as loose connections and intermittent wiring breaks.
Note: The current hour retries can be cleared and updated by running the Loop
Comm Check diagnostic. (See “Loop comm check” on page 197 for more
information.)
Response Quality report
This report lists the devices that are communicating at or below a quality
percentage that you specify. By entering different percentages, you can
troubleshoot device communications on a loop.
The panel periodically stores the measurement of the response for individual
devices during communication polling. The report displays the result of the latest
poll as a percentage, where 100% is the best response (maximum possible pulse
strength) and anything less than 44% means that the device failed a
communication poll and could potentially generate a communication fault.
Devices appearing in this report are an indication that the wiring to the devices is
questionable or that the devices themselves are questionable. To investigate
problem devices, inspect the wiring between the problem device and another
device not in the report. Inspect the wiring for problems such as exceeding wiring
specifications (see “Addressable device loop wiring” on page 11 for more
information), loose connections, and intermittent wiring breaks and shorts.
To view a Comm Retries diagnostic report:
1. Press the menu button and choose Reports.
2. Choose Diagnostics.
3. Choose Comm Retries.
Main Menu
Reports
Test
Control
Program

Reports
Internal Status
Device Details
Diagnostics

Diagnostics
Comm Retries
Response Quality