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Mercury Security © 2017 

MS-ICS 

DOC  10107-0053 

REV 1.02 

 Page   3 

 

 

 

MS-ICS to MS-ACS 

TB2 

– 2-wire RS-485 

 

The 34-conductor ribbon cable is non-standard.  Do use a floppy disk drive cable.  

 

IMPORTANT NOTE!

  Install the termination jumper (MS-ICS jumper J8), ONLY on the panel at each end 

of the RS-485 bus.  Failure to do so will compromise the proper operation of the communication channel! 

6.  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. 

7.  Status LEDs:  

Power-up

:  All LED's

 OFF. 

Initialization:

  LED's 1 through 6 are sequenced during initialization.  LED's 1, 3, and 5 are turned ON for 

approximately 1.5 seconds 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 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 
section 8. 

Running: 

LED 

DESCRIPTION 

Off-Line / On-Line and Battery Status 

  Off-Line = 20% ON, On-Line = 80% ON 
  Double Flash if Battery is Low 

Host Communication Activity (Ethernet or Serial Port 1) 

Port 2 Communication Activity 

Port 3 Communication Activity 

Reserved for future use 

Reserved for future use 

D7 

Host Communication (Ethernet Port 0) 

YEL 

On-board Ethernet Speed: OFF = 10Mb/S, ON = 100Mb/S (Yellow LED) 

GRN 

OFF = No Link, ON = Good Link (Green LED), Flashing = Ethernet Activity 

J1

J5

J1 of MS-ICS

34-CONDUCTOR

RIBBON CABLE

SEE NOTE BELOW

J5 OF MS-ACS

KEY

KEY

GND

TR+
TR-

TB2

To serial I/O Devices

4

1

J8

Summary of Contents for MS-ICS

Page 1: ...n ribbon cable up to two MS ACS are supported Standard Mercury remote serial I O panels may be connected to the external 2 wire RS 485 multi drop communication bus MS ICS J5 1 4 3 2 S1 ON D7 1 2 3 4 5 6 J8 TR TR GND TB2 4 1 BATTERY BR CR2330 REPLACE ANNUALLY GND TMP GND PFL GND BAT TB1 6 1 BT1 3V CR BR2330 S2 J4 J2 12VDC J1 1 1 75 44 55 6 11 155 19 8 58 218 01 J5 CONNECTION FOR LANTRONIX MICRO125 ...

Page 2: ...38 400 baud no encryption no flow control 3 Input Power Wiring The MS ACS requires 12 Vdc for input power and is connected to J2 Pins 1 and 2 are connected to ground and pin 3 is connected to 12 Vdc Observe POLARITY on 12 Vdc input J2 mates with the following housing and uses two crimp contacts Housing Molex 39 01 4030 Crimp contact Molex 39 00 0047 22 28 gauge 39 00 0039 18 24 gauge 4 Cabinet Tam...

Page 3: ...s 1 3 and 5 are turned ON for approximately 1 5 seconds 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 through 4 flash at the same time d...

Page 4: ... seconds 7 When complete only LEDs 1 4 will flash for 8 seconds 8 The MS ICS board will reboot 8 seconds after LEDs 1 4 stop flashing no LEDs are on during this time 9 IT Security When installing the MS ICS 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...

Page 5: ...tice Warranty Mercury Security warrants the product is free from defects in material and workmanship under normal use and service with proper maintenance for one year from the date of factory shipment Mercury Security assumes no responsibility for products damaged by improper handling or installation This warranty is limited to the repair or replacement of the defective unit There are no expressed...

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