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Sierra Monitor Corporation 5391-01 User Manual Download Page 58

T12017-Sentry_LANServer_Users_Manual 

 

 

 

 

Page 58 of 59 

FieldServer Technologies

 1991 Tarob Court Milpitas, California 95035 USA  

Web

:www.fieldserver.com 

Tel

: (408) 262-2299   

Fax

: (408) 262-2269   

Toll_Free

: 888-509-1970   

email

: [email protected]

 

Appendix 5. General 

Appendix 5.1.  9.1 Browser Caching 

The  WebServer  supports  browser  caching  by  filling  in  the  Served  File's  date  and  Last-
Modified date as required. 
  
The  WebServer  does  not  use  the  file  date  and  time  to  support  caching.    It  uses  the 
FieldServer reboot time.  This is considered the file creation / last-modified date for all files. 
  
HTML files are never cached. They are always served with a HTTP-200 response. 
 
Other files may be cached. When the browser fills in the 'If-Modified-Since' header field with 
a date that is newer than the reboot date then the FS responds with an HTTP-304 response 
and does not serve the file as it knows the browser has cached the file.  To clear the cache 
reboot the FieldServer or use Ctrl-F5 to force a re-read without caching. 

Summary of Contents for 5391-01

Page 1: ...nd needs to design and construct specific pages then please use the manual Sentry LANServer Developer s Manual APPLICABILITY EFFECTIVITY This manual provides instructions for the following Sierra Moni...

Page 2: ...erpreting Sentry Sensor Controls 16 5 4 Interpreting Sentry Combo Controls 17 5 5 Interpreting Sentry Alarms 18 5 6 Understanding the Alarm Table Colors 19 5 7 Acknowledging Alarms 19 5 8 Interpreting...

Page 3: ...1 5 Alarm Page doesn t auto refresh when there is a new alarm 38 Appendix 1 6 Buttons Display in White 39 Appendix 1 7 Cookie Length 39 Appendix 1 8 Sentry Calibration Backup SentryBK produces a warn...

Page 4: ...ective easy to use graphical display of hazardous gas conditions using the Microsoft Explorer web browser Safety data presented visually on a PC located in the plant or remotely Interaction with the h...

Page 5: ...a local SMC representative to obtain the necessary upgrade 1 5 Connections The standard Sentry LANServer Model 5391 01 includes the FieldServer Technologies LANServer plus the necessary cables and co...

Page 6: ...e use of 2 to 4 Sentry controllers it is necessary to utilize RS 485 communication from the controllers to the LANServer Each Sentry will have a 4301 10 RS 232 RS 485 converter to provide the necessar...

Page 7: ...for greater than 4 Sentry controllers it will be necessary to use the Model 5391 02 LANServer which consist of the larger multiport LANServer from FieldServer Technologies In such applications multipl...

Page 8: ...ogram Web Browser The software application used to connect to and view pages on the Internet The Sentry LANServer is designed to be view on Internet Explorer If using another Web Browser check with Si...

Page 9: ...tor any information other than that documented for each control Neither Sierra Monitor nor anyone else can use these ActiveX controls as distributed to compromise the system security As there is a the...

Page 10: ...d signed ActiveX Controls Enable or Prompt Download unsigned ActiveX Controls Enable or Prompt Initialize and Script ActiveX Controls not marked as safe Enable or Prompt Run Active X Controls and plug...

Page 11: ...y LANServer do not transfer any data about the user the user s computer or preferences Consider the use of Sierra Monitor cookies as safe It is necessary set the browser privacy settings to enable coo...

Page 12: ...888 509 1970 email support fieldserver com Allowing cookies from a particular server is done by adding the server s name or IP Address You need to accept 1 st party cookies You can choose whatever se...

Page 13: ...1 Synchronizing Setting LANServer Time This is done with a utility called RUINET This is fully described in the LANServer Troubleshooting guide The main points of the procedure are repeated below Set...

Page 14: ...he status of a logical collection of Sentry Sensor s A sentry consists of up to 8 sensors A Zone is a collection of sensors based on a logic grouping such as geographic location in a building thus a z...

Page 15: ...lso activates the alarm relay on the Sentry Normal None of the above If any sensor is reporting a warning AND no sensor in the zone is in alarm then the zone will be displayed in orange If any sensor...

Page 16: ...blank then the sensor tag name allocated during construction of the web page is displayed Sensor Engineering Units The engineering units as configured in the Sentry If none are configured in the Sent...

Page 17: ...in the Sentry If none are configured in the Sentry then none are shown May not be displayed depends on the configuration of the control when the page was constructed Sensor Concentration If the value...

Page 18: ...event history If there are no alarms the table is not presented A single line reports that there are no alarms The number of entries in the table depends on the number of active alarms The LANServer...

Page 19: ...nes what text is displayed When pushing this button it is effectively pushing the alarm reset button on the front panel of each Sentry connected to the LANServer There is no harm in pushing it more th...

Page 20: ...s 1991 Tarob Court Milpitas California 95035 USA Web www fieldserver com Tel 408 262 2299 Fax 408 262 2269 Toll_Free 888 509 1970 email support fieldserver com If pushing the alarm button and then Ref...

Page 21: ...must be enabled The event table is a human readable presentation of the event information The most recent event is the topmost one 5 8 1 Event Report Types The two types of event report K and P report...

Page 22: ...a new warning Comms C This event is generated by the LANServer if a Sensor reports that the analog value is bad or if it loses communications with the Sentry When reported on the event screen the lett...

Page 23: ...ts report When LANServer s are shipped from the factory the date and time has not been set 5 9 2 What happens if Event Logging is disabled If event logging is disabled then the events page will not up...

Page 24: ...letely fill the free space a minimum amount of free space is maintained If this threshold currently set at 100k Bytes is reached then event file maintenance is performed If after the maintenance the a...

Page 25: ...then a dialog reporting the error information is presented When the events dat file has been uploaded its contents are read and converted to comma separated format CSV The uploaded records are append...

Page 26: ...ng this fact is displayed and some additional information on the PC s time zone is printed in the CSV file to alert the user that the CSV time will not correspond to the events htm screen time 5 10 3...

Page 27: ...this change is that the new versions of this ActiveX control prior to 1 04j cannot process events which were produced by LANServer firmware versions 1 08a or later 5 11 Interpreting the Sentry Face Pl...

Page 28: ...r each sensor its current gas concentration level and the engineering units are displayed here The data is obtained by the LANServer by reading the sentry Current Sensor Current Sensor s Gas Concentra...

Page 29: ...through Sensors 1 to 8 Upper Display Current Sensor s Gas Concentration Sometimes the level is not displayed but is replaced by error code as on the Sentry Controller Refer to the Sentry instruction m...

Page 30: ...e displayed here Visual Sensor Alarm Indicators Normal Solid Green Warning Solid Red Alarm Flashing Red White Key Pad Zone The response time to the Key Pad is very slow and it is recommended if possib...

Page 31: ...rver If the PC is connected to the LANServer s N2 adapter then the protocol has to be enabled This concern doesn t apply to N1 because it is enabled by default 5 11 1 2 One User at a Time Only one bro...

Page 32: ...date the user backs up the calibration information The user then replaces the EEPROM does a Clear All using the menu system on the Sentry front panel and then after resetting the Sentry and waiting fo...

Page 33: ...e of Register 40701 is 0 The value of Register 40702 is 1 The value of Register 40703 is 2 etc 5 12 1 4 Problems with Calibration Backup Control 40701 0 1 2 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0...

Page 34: ...icate a problem Flashing means rapidly toggling from one state to another In the case of Text controls this means flashing between the on and off text In the case of LED controls this means flashing b...

Page 35: ...e as is required to display the text If a fixed pixel width has been specified then it s possible that the displayed text will be truncated Colors A different color for the on and off states can be co...

Page 36: ...led off image file is displayed If the value is non zero then the so called on image file is displayed The web project designer can also specify the following properties Size Limit the width of the co...

Page 37: ...k the LANServer will serve the file causing the Browser to ask the user if they want to open the file or save it on their local disk Note the following restrictions Only certain file types will produc...

Page 38: ...login htm not found If access control is enabled and a user has not been logged in then the LANServer will change the web page to a page called login htm In the event that access control is activated...

Page 39: ...e offline white Ensure Daylight Savings Time is disabled Set the time and date correctly Now refresh the page and wait a few seconds If the buttons remain white then repeat this refresh a few times Ap...

Page 40: ...40977 is not backed up This register is one of the new registers backed up in rev 1 03a of the control Depending on the configuration this may be what is desired However if backing up the registers p...

Page 41: ...rver can not create the ports for the map descriptors Existent non WEB 03 FYI Reset was pushed WEB 05 Err Error Opening file s sThe url s BR BR The reason is s BR s r n This message is not printed if...

Page 42: ...htm is essential to the operation of the LANServer when it is used for Sentry applications It should have been prepared and downloaded by the tows exe application Use that application again to downlo...

Page 43: ...rs formatted incorrectly Read Manual WEB 56 Err Security htm invalid no time Read Manual WEB 57 Err Security htm invalid Multiple definition of time Read Manual WEB 58 FYI Access control not enabled W...

Page 44: ...sh rate WEB 73 Err Too may Sentry Objects Limit d The maximum number of Sentry controls permitted in a Web Project is limited to the number printed in the message Typically 200 Extra controls must be...

Page 45: ...y be safely ignored To add the file to your project for download by toWS exe simply place the file in the same folder as the config csv file inside the project folder which is itself a sub folder of C...

Page 46: ...IP address port is normally permitted This error occurs if an application attempts to bind a socket to an IP address port that has already been used for an existing socket or a socket that wasn t clos...

Page 47: ...ting or canceling an asynchronous request WSAAsyncGetXbyY that has already been canceled or completed WSAECONNABORTED 10053 Software caused connection abort An established connection was aborted by th...

Page 48: ...ket operation failed because the destination host was down A socket operation encountered a dead host Networking activity on the local host has not been initiated These conditions are more likely to b...

Page 49: ...or the buffer used to receive a datagram into was smaller than the datagram itself WSAENETDOWN 10050 Network is down A socket operation encountered a dead network This could indicate a serious failur...

Page 50: ...when a socket descriptor to a socket that cannot support this operation for example trying to accept a connection on a datagram socket WSAEPFNOSUPPORT 10046 Protocol family not supported The protocol...

Page 51: ...nnected party did not properly respond after a period of time or established connection failed because connected host has failed to respond WSATYPE_NOT_FOUND 10109 Class type not found The specified c...

Page 52: ...e in a polling mode to determine when an overlapped operation has completed will get this error code until the operation is complete WSA_IO_PENDING OS dependent Overlapped operations will complete lat...

Page 53: ...S dependent Overlapped operations will complete later The application has initiated an overlapped operation which cannot be completed immediately A completion indication will be given at a later time...

Page 54: ...e if a call to WaitForMultipleObjects fails or one of the registry functions fails trying to manipulate the protocol namespace catalogs WSASYSNOTREADY 10091 Network subsystem is unavailable This error...

Page 55: ...rent Windows Sockets implementation does not support the Windows Sockets specification version requested by the application Check that no old Windows Sockets DLL files are being accessed WSAEDISCON 10...

Page 56: ...or to indicate the value of a data array element in a FieldServer With appropriate permission a user may interact with the control to have the control change the value of the data array element in the...

Page 57: ...provided in the manual FST Win32 Toolbox User Manual The following notes are a guide only Operating System Microsoft Windows 2000 Professional ActiveX Container Microsoft Internet Explorer version 6...

Page 58: ...The WebServer does not use the file date and time to support caching It uses the FieldServer reboot time This is considered the file creation last modified date for all files HTML files are never cac...

Page 59: ...al Page 59 of 59 FieldServer Technologies 1991 Tarob Court Milpitas California 95035 USA Web www fieldserver com Tel 408 262 2299 Fax 408 262 2269 Toll_Free 888 509 1970 email support fieldserver com...

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