ProSoft Technology MVI46-MBP - Manual (Page 34)

MVI46-MBP ♦ SLC Platform Diagnostics and Troubleshooting
Modbus Plus Communication Module
Page 34 of 101 ProSoft Technology, Inc.
February 19, 2008
4.2 LED Status Indicators
The LEDs indicate the module's operating status as shown in the following table:
ProSoft
Module Color Status Indication
On Data is being transferred between the module and a remote terminal using
the Configuration/Debug port. CFG Green
Off No data is being transferred on the Configuration/Debug port.
Off This LED should always be off, as port 2 on the module is not used. P1 Green
On Hardware problem or you have connected to the wrong port. Connect your
terminal to port 1.
Off This LED should always be off, as port 3 on the module is not used. P2 Green
On Hardware problem or you have connected to the wrong port. Connect your
terminal to port 1.
6 flashes
per second The MVI46-MBP is working normally in that it is successfully receiving and
passing the token. All nodes on the link should be flashing this pattern.
1 flash per
second This node is off-line after just being powered up, or after exiting the four
flashes per second mode. In this state, the node monitors the network and
builds a table of active nodes and token-holding nodes. It remains in this
state for five seconds, then attempts to go to its normal operating state.
Two
Flashes
then OFF
for two sec The node is hearing the token being passed among other nodes, but is
never receiving the token. Check the network for an open circuit or
defective termination.
Three
Flashes
then OFF
for 1.7 sec The node is not hearing any other nodes. It is periodically claiming the
token but finding no other node to which to pass it. Check the network for
an open circuit or defective termination.
APP (Modbus
Plus Status) Amber
Four
Flashes
then OFF
for 1.4 sec The node has heard a valid message from another node that is using the
same address as this node. The node remains in this state as long as it
continues to hear the duplicate address. If the duplicate address is not
heard for five seconds, the node then changes to the pattern of one flash
every second.
On The LED is on when the module is performing a write operation on the
backplane. BP ACT Amber
Off The LED is off when the module is performing a read operation on the
backplane. Under normal operation, the LED should blink rapidly on and
off.
Off The card is not receiving any power and is not plugged securely into the
rack.
Green The module is operating normally.
OK Red/
Green
Red The program has detected an error or is being configured. If the LED
remains red for over 10 seconds, the program has probably halted.
Remove the card from the rack and re-insert the card to restart the
module's program.
Off The battery voltage is OK and functioning. BAT Red
On The battery voltage is low or battery is not present. Allow battery to charge
by keeping module plugged into rack for 24 hours. If BAT LED still does not
go off, contact ProSoft Technology, as this is not a user serviceable item.