ProSoft Technology MVI94-DNP - Manual (Page 42)

Diagnostics and Troubleshooting MVI94-DNP ♦ Flex I/O
User Manual DNP 3.0 Server over Ethernet Communication Module
Page 42 of 131 ProSoft Technology, Inc.
December 17, 2010
4.1 LED Status Indicators
This section defines the indications provided on the MVI94-DNP module through
LEDs.
4.1.1 PRT1
This LED indicates data transmit and receive activity on the configuration port.
When the TXD or RXD pin is active on the port, the LED will be illuminated
green. When the port is not active, the LED will be in the off state.
4.1.2 U1
This LED indicates backplane data transfer operation. When the module is
successfully writing data to the FLEX I/O backplane, the LED will be in the off
state. When the module is reading a new block of data from the FLEX I/O
backplane, the LED will be in the on state (amber). During normal operation of
the module, this LED should turn on and off at a very rapid rate. If the LED never
turns on, check your ladder logic to verify that the data transfer is set up
correctly.
4.1.3 U2
This LED indicates communication errors on the DNP application port. The LED
is off when no error exists on the port. If a communication error is recognized on
the port, the LED will be illuminated. If the LED is turned on, check for errors in
the command list to determine the error condition recognized by the module.
4.1.4 STS
This LED indicates the "health" of the module. When power is applied to the
module, the LED will be illuminated. If the LED is green, the program is working
correctly and the user configuration is being used. If the LED is red, the program
is halted. Try restarting the module by cycling power. This should cause the
module to return to its normal state.The module should return to its normal state.
4.1.5 PRT2
This LED indicates data transmit and receive activity on the DNP master/slave
port. When the TXD or RXD pin is active on the port, the LED will be illuminated
green. When the port is not active, the LED will be in the off state.