Communications Interface
45 LRP2000 Passive Reader/Writer
Flashing LED Signals
Flashing LED indicators, or combinations of flashing LED indicators, are used to indicate certain controller
states, or transitions from one state to another.
ERROR LED - 4 Flashes
The ERROR LED alone flashes four times to indicate that the controller is entering the download routine.
This indicates that SW5 is in the “ON” position during a power-on or hard reset. With a terminal correctly
configured and connected to COM2, the download menu is displayed.
ERROR and CONFIG LEDs - 4 Simultaneous Flashes
The ERROR and CONFIG LEDs flash simultaneously four times to indicate that (CTRL-D) has been
received within the first seven seconds of power-on or hard reset. With a terminal correctly configured and
connected to COM2, the configuration menu is displayed.
ERROR and CONFIG LEDs - 4 Alternating Flashes
The ERROR and CONFIG LEDs alternately flash four times to indicate that the controller is entering
operating mode and is ready to receive commands on COM1.
E-DIAG and E-CHAN 1 Ethernet Module diagnostic codes
The E-DIAG LED lights solidly to indicate the following errors. These errors can be identified by the
number of times that the E-CHAN 1 LED blinks.
OUTPUT A GREEN Output A active
OUTPUT B GREEN Output B active
OUTPUT C GREEN Output C active
OUTPUT D GREEN Output D active
ERROR RED Flashes red for 0.5 seconds to indicate the unsuccessful execution of an
ABx command
ANT RED Antenna is transmitting
E-DIAG Blinks in combination with E-CHAN 1 LED to provide diagnostic
information. See explanation below.
Number of
Blinks Error
1 EPROM Checksum Error
2 RAM Error
3 Network Controller Error
4 EEPROM Checksum Error
5 Duplicate IP address on network
6 Software does not match
hardware
Table 13: LED Indicators
LED Color Meaning