Instruction manual

PLB-CF2 Two-Slot Mini Cardframe Troubleshooting 11
Troubleshooting
• Power LED – If the power LED is not on, check the power cord and power
switch (PLB-CF10) or check the external power supply (PLB-CF2).
•
Diag LED – This LED indicates the state of all cards in the PLB-CF2 or
PLB-CF10. The Diag light will flash on briefly when a card is first plugged
in or powered up. If a card causes an error, the Diag LED will either flash
on and off continually or it will remain on continually. Remove the cards
one by one until you locate the faulty card.
•
Data LED – This LED is a 'window' into the network, flashing on briefly
whenever a packet is sent over the network by the MCU card or by any
device on the PhastLink network.
In normal operation, the Data LED should be off for a larger percentage of
time than it is on.
If the Data LED is on continually, there may be a problem with a hub-to-
hub connection (e.g., Hub In connected to Hub In, or a bad cable). A looped
cable connecting two PhastLink ports or a faulty cable can also cause the
Data LED to remain on continually. Remove each cable one by one, then
each card one by one until the faulty cable or card is located. If all
PhastLink cables, hub-to-hub cables, and cards are removed and the Data
LED remains on, the PLB-CF2 or PLB-CF10 may be at fault – contact
PHAST Tech Support.
If the Data LED is not on continually but is on for a larger percentage of
time than it is off, it may indicate a faulty device or card, and the condition
may slow down network response.
•
Link LED – The Link LED on each card indicates when it sends a message
over the network. If a card's Link LED is on continually, that card may be
causing the problem. For example, this could be caused by a contact card
with an intermittent short or by a faulty contact sensor. If no cards are at
fault, unplug each PhastLink cable run until the suspect cable is located.