KEP Multi-Protocol Communication Card Option Start-up Guide
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Appendix A.4. LED Diagnostics for Communications Between COM CARD and Device
Please see the diagram below for COM CARD Option 3 (left) and Option 4 (right) LED Locations.
Tag
Description
Run
The Run LED will start flashing 20 seconds after power indicating normal operation. The
Heat
Beat
LED has the same functionality but flashes more rapidly.
Sys/Config
Error
The Sys/Config Error LED will go on solid 15 seconds after power up. It will turn off after 5
seconds. A steady red light will indicate there is a system error on COM CARD. If this occurs,
immediately report the related “system error” shown in the error screen of the GUI interface to
Sierra Monitor Corporation for evaluation.
Node Offline
The Node Offline LED will turn on and stay solid if there is no communication with the device.
RX
The RX LED will flash when a message is received on the field port.
TX
The TX LED will flash when a message is sent on the field port.
LonWorks
The LonWorks LED will flash until the unit is commissioned, then it will stay off.
PWR
This is the power light and should show steady green when COM CARD is powered.
Figure 24: Diagnostic LEDs
