AUTONOMOUS The EasyLink™ WATCHDOG CONTROLLER WITH WD TIMER, AC POWER SWITCH, RESET SWITCH AND EMBEDDED SOFTWARE

• Onboard micro-controller with embedded software
• Power supply unit
• AC power control switch
• Four power supply cables (1 for outlet, 2 for UPS and 1 for computer connection)
• Computer reset cable and ATX power supply adapter that connect to motherboard RESET jumper and ATX Power on jumper
• RS-232 (serial, 1200 baud, DB-9 female jack) interface or USB (optional) interface, communication protocol
• External Physical Sensor interface (4 sensors, DB9 male jack)

• Organizes the connection between the EasyLink™ WD Controller and a computer through standard RS- 232 (Serial) or USB (optional) interfaces according to the Atlantic-Link Communication Protocol
• Provides hardware-controlled reset and reset by power supply switch on/off
• Controls external sensors status (up to 4 sensors)
• Provides the record and saving of events sequence in internal microprocessor registers
• Provides self-testing execution, saving the settings and so on

• If the EasyLink™ WD Controller doesn't receive PING packet from external computer it will generate in programmable timeout (2 sec's - 480 sec's) hardware reset signal for the total computer motherboard
• Programmable Timeout is 16 sec's - 68 min's to load operation system and related software
• If the EasyLink™ WD Controller doesn't receive PING packet from external computer it will switch off power supply and will switch it on in 10 sec
• Programmable Timeout is 16 sec's - 68 min's to load operation system and related software
• If the EasyLink™ WD Controller doesn't receive PING packet from external computer it will generate hardware reset for the total computer motherboard
• Programmable Timeout is 16 sec's - 68 min's to load operation system and related software
• If the EasyLink™ WD Controller doesn't receive PING packet from external computer it will switch off power supply and then it will automatically go into Standby mode

1. 110/240 V input (IEC Male Connector Power) with relay
2. UPS/in output (IEC Female Connector Power)
3. UPS/out input (IEC Male Connector Power)
4. Computer output (IEC Female Connector Power) with relay

• If UPS is available. Power supply cable connects to the EasyLink™ WD Controller 110/240 V Power/in input. UPS power supply cable connects to the EasyLink™ WD Controller UPS/in output, then UPS power supply cable connects to the EasyLink™ WD Controller UPS/out input, the EasyLink™ WD computer output power supply cable connects to the computer, which controls by the EasyLink™ WD Controller.
  
  When 110/240 V power supply line is broken, the EasyLink™ WD relay will disconnect from power supply source for safety thus preventing any power surges. The EasyLink™ WD Controller will operate using its internal battery. Then the EasyLink™ WD Controller will automatically alert unattended computer system. The EasyLink™ WD Controller will monitor and store sensors data in internal log. Unattended computer based system will get its power supply from attached UPS and it has the ability to send alarm signal (or by E-mail) to the operator of the Network Management System and then automatically start parachute program.
  
  If UPS is broken, the relay automatically disconnects unattended computer based system from UPS power supply source, in order to protect against surges.
  
  This configuration is used for the most mission-critical applications such as unattended public kiosks, file or database server protection, gateway systems and much more.
  
• If UPS is not available. Power supply cable connects to the EasyLink™ WD 110/240 V input. Another power supply cable from an outlet connects to the EasyLink™ WD UPS/out input or connects UPS/in output with UPS/out input. The EasyLink™ WD computer output power supply cable connects to unattended computer based system, which controls by the EasyLink™ WD.
  
  If 110/240 V power supply connection is broken, the EasyLink™ WD relay disconnects automatically from power supply sources for safety thus preventing any power surges. The EasyLink™ WD Controller will operate from its internal battery. It will monitor and store sensors events data in internal log structure (log store registers).
   
  The EasyLink™ WD Controller provides the schedule for power supply.
   
  The EasyLink™ WD Controller can switch off power supply according to programmable timeout and switch on power supply on schedule (DD.MM.YYYY hh:mm). It is very important if necessary remotely to switch off unattended system during holidays or week-end and then switch it on.
   
  THE ATX/RESET ADAPTER FOR COMPUTER RESET AND ATX POWER SUPPLY SWITCHING
   
  The Atlantic-Link ATX/Reset adapter is placed in a plastic box. The adapter connects to the EasyLink™ Watchdog SENSORS panel by the cable. The adapter has following connectors:
  • COM (Serial) (9 pins);
  • RESET output and input (4 pins)
  • ATX Power output and input (4 pins)
  • COM (Serial) (9 pins)
  • Lock sensor #1 (2 pins)
  • Lock sensor #2 (2 pins)
  • Active sensor (3 pins)
  Via this adapter the EasyLink™ WD Controller provides hardware reset signal and ATX standard power supply/on signal for the total computer motherboard. Also it provides connections for computer RESET and POWER buttons to support manual reset and computer switch on/off.
  The adapter can be used for external sensors connection (see chapter 2.6).
   
  RS-232 (SERIAL) INTERFACE (USB optionally), THE COMMUNICATION PROTOCOL
   
  The EasyLink™ WD Controller has two connection options for external computer or unattended computer based system. The first is RS-232 interface and the second is USB (optional) interface.
  Also it is possible to use Serial/USB converter for connection.
  
  RS-232 interface operates at 1200 bauds rate, start bit, 8 data bits and one stop bit. The Atlantic-Link Communication Protocol uses RTS flow control. For the device to respond RTS (request to send) line must be enabled, and DTR (data terminal ready) line must be disabled.
  
  The communication between the EasyLink™ WD Controller and unattended computer based system is provided the Atlantic-Link Communication Protocol. This Protocol uses binary code table. Data exchange process is based on packets method. The Protocol uses Data packets and Service packets for the acknowledgement. The Data packet structure consists of SYN symbol and data block. Data block includes one-byte command plus values. Service packet consists of one byte ACK (ASCII positive acknowledgement) or NAK (ASCII negative acknowledgement).
  
  There three types of Protocol commands:
  
  1. The Active commands from the host (the host sends a packet to the EasyLink™ WD Controller and the EasyLink™ WD Controller responds with a positive or a negative acknowledgement).
  
  2. The Passive commands from the host (the host sends a packet to the EasyLink™ WD Controller and the EasyLink™ WD Controller responds with a data packet or a negative acknowledge.
  
  3. The Interrupt commands from the EasyLink™ WD Controller (if any sensor event occurs or power supply downs, the EasyLink™ WD Controller will send packets to the host several times, the host must respond or acknowledge the packet).
   
  The Atlantic-Link Communication Protocol Commands list:
  
  
  0x01 YYMMDDHHMM - SetCurrentTime (set current date and time values in the EasyLink™ WD Controller timer)
  0x02 mask byte - SetSensorMask (set enable/disable sensors mask)
  0x03 TT - SetResetTimeout (set timeout value for reset function, interval 01h-FFh, 2 sec's - 480 sec's)
  0x04 NN - GetStatus (get a The EasyLink™ WD Controller internal register status (0x043F - get status register)
  0x06 YYMMDDHHMM - SetPowerOnTime (set the date and time value for scheduled PowerOn function)
  0x07 mask byte - SetFunctionMask (set enable/disable the EasyLink™ WD Controller Restart Procedure functions mask.)
  0x08 - Signal (ping from the host to the EasyLink™ Watchdog Controller)
  0x09 TT - SetPowerOffTimeout (set the timeout value for the EasyLink™ WD Controller PowerOff function, 2 sec's - 512 sec's)
  0x0A - GetCurrentTime (get the date and time value from the EasyLink™ WD Controller timer)
  0x0B - GetPowerOnTime (get the date and time value for the EasyLink™ WD Controller schedule PowerOn function)
  0x0C - GetVersion (get the EasyLink™ WD Controller firmware version)
  0x0D TT - SetLoadTiomeout (set the timeout for OS loading after restart procedure, 16 sec's - 68 min's)
  0x55 [byte value of internal register with 0Ch address] -interrupt command from the EasyLink™ WD Controller to the host (any physical sensor or power supply status was changed);
  0x0300 - Stop (stop the control process)
  
  
  Sensors mask can enable/disable any external physical sensors activity. The EasyLink™ WD Controller functions mask can enable/disable the process activity when power supply is down, or UPS device is broken, or reset sequences are necessary to start, or any of two lock sensors event occurs. Another word function mask can change the events sequence for the EasyLink™ WD Restart Procedure.
  
  Some users have unattended computer based systems that are only used on fixed schedule (e.g., midnight to 7:00 a.m.). The Users prefer to have unattended computer based system powered off when not in use. Using the EasyLink™ WD Controller, schedule SetPowerOnTime, SetPowerOffTimeout, GetPowerOnTime commands, sysdownsensor and sysupsensor software sensors unattended computer based system will perform a smooth OS and application shutdown at scheduled down time, and then turn power supply off. The EasyLink™ WD will turn the computer back on at scheduled up time. The schedule is maintained indefinitely even in the event of power failures at the remote site.
   
  EXTERNAL SENSORS INTERFACE (4 SENSORS, DB9 MALE JACK)
   
  The EasyLink™ WD Controller front panel SENSORS has 4 external sensors output connectors. The EasyLink™ WD Controller provides connection for active and passive external physical sensors. A passive sensor has two statuses. The low level status (0) messages to the EasyLink™ WD Controller about regular state of monitoring process. The high level status (1) messages to the EasyLink™ WD Controller about alert state of monitoring process. Or vice versa dependently of setting logic.
  
  In fact, the EasyLink™ WD fixes the alteration of any passive sensor status. Response procedure for these alterations determines by the working logic of user's application. In the current version of the EasyLink™ WD Controller and software (ver. 1.0) Atlantic-Link uses internal main power supply sensor, internal UPS power supply sensor, two external passive locked/opened sensors and two free sensors. One of free sensor is passive and another one may be active sensor. For active sensor connection needs three pins. The first pin controls sensor status (0 or 1), the second pin uses for +5 V sensor power supply and the third one is "ground". It is possible to use different kinds of additional sensors such as temperature fluctuation sensor or fan serviceability sensor.
  There is possibility to use the Atlantic-Link SDK to develop a software module to handle additional external sensors events or additional software sensors development.
   
  Disposition of the contacts on the front DB9 (SENSORS) panel of the EasyLink™ Watchdog Controller:
  
  1. "Reset" signal relay output (port B3)
  2. "Reset" signal relay output (port B3). The pair to 1
  3. Ground
  4. Status of active sensor (port A4)
  5. A Signal to the Atlantic-Link ATX/Reset adapter to switch on power supply (port B0)
  6. The status of "passive" sensor opened/closed #1 (port B6)
  7. The status of "passive" sensor opened/closed #2 (port B7)
  8. Reserve (port B1 or port B2)
  9. Power +5Â