Mercury Security © 2016
MS-I8S
DOC 10107-0055
REV 1.01
Page 4
7. Status LEDs:
Power-
up: All LED’s OFF
Initialization:
Once power is applied, initialization of the module begins
When initialization is completed, LEDs A, B, C, 1 through 8 are briefly sequenced
ON
then
OFF
.
Run time
: After the above sequence, the LEDs have the following meanings:
A LED
: Heartbeat and On-Line Status:
Off-line: 1 sec rate, 20%
ON
On-line:
Non-encrypted communication: 1 sec rate, 80%
ON
Encrypted communication:
.1 sec
ON
, .1 sec
OFF
, .1 sec
ON
, .1 sec
OFF
, .1 sec
ON
, .1 sec
OFF
, .1 sec
ON
, .3 sec
OFF
A LED Error Indication:
Waiting for application firmware to be downloaded: .1 sec
ON
, .1 sec
OFF
B LED
: SIO Communication Port Status:
Indicates communication activity on the communication port
1 LED
: Input Status: 1
2 LED
: Input Status: 2
3 LED
: Input Status: 3
4 LED
: Input Status: 4
5 LED
: Input Status: 5
6 LED
: Input Status: 6
7 LED
: Input Status: 7
8 LED
: Input Status: 8
C LED
: Cabinet Tamper
Input in the inactive state:
OFF (briefly flashes ON every 3 seconds)
Input in the active state:
ON (briefly flashes OFF every 3 seconds)
Input in a fault state:
Rapid Flash
8. Specifications:
The processor is for use in low voltage, class 2 circuit only.
The installation of this device must comply with all local fire and electrical codes.
Primary power:
12 Vdc ±10%, 130 mA maximum
Inputs:
8 unsupervised/supervised, standard EOL: 500/1k/1k ohm, 1%, 1/4 watt
1 unsupervised, dedicated for cabinet tamper
Communication:
2-wire RS-485. 9600, 19200, 38400, or 115200 bps
Cable requirements:
Power:
18 AWG, 1 twisted pair
RS-485:
24 AWG, 120 ohm impedance, twisted pair with shield, 4,000 ft. (1,200 m)
maximum
Alarm inputs:
1 twisted pair, 30 ohms maximum
