Serial Watchdog
Documentation and User Manual
Version 1.1
Page 1: ...Serial Watchdog Documentation and User Manual Version 1 1...
Page 2: ...nd malfunction of the Serial Watchdog The information in this manual has been carefully reviewed and is believed to be accurate and reliable However the GBS Elektronik GmbH does not assume any liabili...
Page 3: ...UPS 2 1 3 USING THE RESET SWITCH OF THE COMPUTER 2 2 PRINCIPLE OF OPERATION 2 2 1 GENERAL SYSTEM BEHAVIOUR 2 2 2 SYSTEM BEHAVIOUR AFTER A POWER FAILURE 2 3 OPTIONAL FEATURES 2 4 TECHNICAL DATA 2 4 1 H...
Page 4: ...tem state is always indicated by several LED s at the watchdog s front and by an external lamp The great advantage of the Serial Watchdog is its hardware independence It is suitable for almost all com...
Page 5: ...in power reliability is guaranteed 1 1 Building a 230V AC watchdog monitored system with UPS Safety Instructions Read and follow all of this instructions careful You work with dangerous voltages There...
Page 6: ...Serial Watchdog 6 Figure 1 1 230V AC system with Serial Watchdog...
Page 7: ...tional 230V AC 24V DC converter Instead of this combination a single 24V DC output UPS can be used In most cases it is very useful to directly connect the watchog s power supply with the power relay s...
Page 8: ...Serial Watchdog 8 Figure 1 2 24V DC system with Serial Watchdog...
Page 9: ...thout having detected a file writing event the watchdog program stops sending the PING command and tries to shut down and restart Windows For safety reasons a fixed 30s overtime period is always added...
Page 10: ...with the parameter 0x02 every 30 seconds The watchdog module sets the STATE OF HEALTH LED to red and starts a timer which generates a 5 second long acoustic signal every hour if audible alarm is enabl...
Page 11: ...as long as power is available If the 1H jumper is closed and no command is received within 1 hour after initialisation the watchdog will open the power relay after 1 hour of waiting This option is ver...
Page 12: ...LTH LED and the acoustic signal according to table 1 and clears all timers Now it waits exactly 30 seconds for the next ping see above If no ping is received within 5 minutes after the STATE OF HEALTH...
Page 13: ...On the watchdog s electronic board three PCB code switches are placed They are without function These code switches can be used to make some time presets changeable by the customer Furthermore the Se...
Page 14: ...12V Version Power consumption 50mA 24V max 110mA 12V max State Of Health Relay characteristics 48V 6A Power Relay characteristics 250V AC 5A Time Presets Ping Time 30s Wait Time 5min Power Off Time 40...
Page 15: ...ent writing files into a specified monitored directory Monitored Directory free selectable can be everyone from a local harddisk all sub directories are also monitored optional Logfile monitored_dir w...
Page 16: ...The first byte of this code repesents the checksum and the second byte is always FFh The third byte represents an error identifier and the fourth byte contains a more detailed error code Command Set...
Page 17: ...h 00h 4 RCSTA corresponds to PIC Register 5 checksum from firmware calculated 4 4 History Hardware HW Description 0x10 initial Version Firmware FW Description 0x10 initial Version 0x11 Number of resta...
Page 18: ...facture 2001 Applicable EC rules 73 23 EWG Niederspannungsrichtlinie changed by 93 68 EWG 89 336 EWG Elektromagnetische Vertr glichkeit changed by 91 263 EWG 92 31 EWG 93 68 EWG Applied harmonized Nor...
