Installing the PRO4200 Two Reader Module
LED Operation
PRO4200 Two-reader module User Guide, Document 800-25698V1
15
LED Operation
The Two-Reader Module uses two onboard LEDs (D1 and D2) to provide status
information during the power-up sequence as well as during normal operation. The
Two-Reader Module also uses two onboard LEDs (D3 and D4) to indicate reader
activity.
In addition to the status LEDs, there are six additional relay status LEDs and eight
input status LEDs on board. The input LEDs flash when there is a fault associated
with the input.When any relay or input is energized or ON, its corresponding status
LED becomes ON also.The LED remains ON for as long as the relay is energized.
The assignment for each relay status LED is shown in the following table:
.The following table lists the LEDs D1 through D4.
Table 2:
LED Settings
Mode
LED D1
LED D2
Description
Power-up
sequence
ON
OFF
Start power-up, hardware setup
OFF
ON
Testing RAM
ON
ON
Testing ROM and completing
initialization
FLASH
ON
LED D1 flashes 4 times after power-up
is completed
Normal
Operation
FLASH
This is the processor heartbeat LED. It
flashes once every second. A short ON
time (~20% duty cycle) indicates the
board is offline or has lost serial
communication with the Controller
board. A long ON time (~80% duty
cycle) indicates the board is online and
communicating with the Controller
board.
FLASH
Flash when there is activity on its Serial
Port.
Table 3:
Additional PRO4200 Two Reader Module LEDs
LED number
Description
D3
Reader 1 activity
D4
Reader 2 activity
D5
Input 0