2.12 Status LEDs
2.12.1 Power-up
All LEDs are OFF.
2.12.2 Initialization
After power is applied, LED 1 is ON for about 15 seconds, then LEDs 2 through 7 are flashed once at the
beginning of initialization. LEDs 5, 6 and 7 are turned ON for approximately one second after the hardware
initialization has completed, then the application code is initialized. The amount of time the application takes
to initialize depends on the size of the database, about one second without a card database. Each 10,000
cards will add about two seconds to the application initialization. When LEDs 1 through 4 flash at the same
time, data is being read from or written to flash memory, do not cycle power when in this state. If the
sequence stops or repeats, perform the bulk erase procedure, See 2.5 Bulk erase configuration memory. If
clearing the memory does not correct the initialization problem, contact Tech Support
(TechSupport@Mercury-Security.com).
2.12.3 Running
After initialization is complete, the LEDs have the following meanings:
LED Description
1 Off-Line / On-Line: Off-Line = 20% ON, On-Line = 80% ON
2 Host communication activity
3 Readers (combined):
Clock/Data or D1/D0 Mode = Flashes when data is received, either Input.
RS-485 Mode = Flashes when transmitting data
F/2F Mode = Flashes when data/acknowledgment is received
4 Input IN1 Status: OFF = Inactive, ON = Active, Flash = Fault
1
5 Input IN2 Status: OFF = Inactive, ON = Active, Flash = Fault
1
6 Cabinet tamper
7 Reserved for future use
D9 Relay K1: ON = Energized
D10 Relay K2: ON = Energized
YEL Ethernet Speed: OFF = 10 Mb/S, ON = 100 Mb/S
GRN OFF = No link, ON = Good link, Flashing = Ethernet activity
1. If this input is defined, every three seconds the LED is pulsed to its opposite state for 0.1 seconds, otherwise, the LED is off.
PLT-05243, A.1 15 June 2021
Powering
Trusted Identities
HIDMercury™ LP1501 Controller
Installation and Specifications
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