Mercury Security © 2015
EP4502
DOC 10107-0039
REV 1.02
Page 6
10. Memory and Real Time Clock Backup Battery:
The static RAM and the real time clock are backed up by a lithium battery when input power is removed.
This battery should be replaced annually. If data in the static RAM is determined to be corrupt after
power up, all data, including flash memory, is considered invalid and is erased All configuration data
must be re-downloaded. Remove the insulator from the battery holder after installation. Battery type:
BR2325, BR2330, or CR2330.
11. IT Security:
When installing the EP4502, it is important to ensure that it done in a secure manner.
Upon installation, the user accounts to the web configuration page should be created with secure
passwords, and that all DIP switches are in the off position for the normal operating mode. The EP4502
is shipped from the factory with a default login account, which is enabled when DIP 1 is moved from OFF
to ON. The default login user name and password will be available for five minutes once enabled.
Therefore, it is important that at least one user account is defined, and the DIP switches are set to OFF
before the EP4502 is commissioned. It is also highly recommended not to configure the EP4502 with an
IP address that is accessible from the public Internet.
To further enhance network security, options are available to disable SNMP, Zeroconf discovery, as well
as the web configuration module itself. Additionally, data encryption can also be enabled over the host
communication port.
12. Status LEDs:
Power-up:
All LED's
OFF
.
Initialization:
LED's 1, 2, 3, 4, 5, 6, 7, IN1, IN2, IN3, IN4, IN5, IN6, IN7 and IN8 are flashed once at the
beginning of initialization. LED 4 is turned ON for approximately 1 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 3 seconds without a card database. Each 10,000
cards will add about 3 seconds to the application initialization. When LED's 1, 2, 3 and 4 flash at the
same time, data is being read from or written to flash memory, do not cycle power when in this state.
Running:
After initialization is complete, the LEDs have the following meanings:
LED
DESCRIPTION
1
Off-Line / On-Line and Battery Status
Off-Line = 20% ON, On-Line = 80% ON
Double Flash if Battery is Low
2
Host Communication Activity (Ethernet)
3
Internal SIO Communication Activity
4
External SIO Communication Activity (Port 1)
5
External SIO Communication Activity (Port 2)
6
Reader 1: Clock/Data or D1/D0 Mode = Flashes when Data is Received, Either
Input. RS-485 Mode = Flashes when Transmitting Data
7
Reader 2: Clock/Data or D1/D0 Mode = Flashes when Data is Received, Either
Input. RS-485 Mode = Flashes when Transmitting Data
YEL
Ethernet Speed: OFF = 10Mb/S, ON = 100Mb/S
GRN
OFF = No Link, ON = Good Link, Flashing = Ethernet Activity
