FieldServer FS-8700-47 instruction manual Appendix A.18. Real Time Clock Synchronization, Datime

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FS-8700-47 DNP 3.0 Driver Manual

Page 40 of 51

 

 

Appendix A.18. Real Time Clock Synchronization

The FieldServer has a real time clock. ProtoCessors have a software clock. If using a ProtoCessor, it is advisable to update the clock on the device periodically.

Remote update of Real Time Clock – Server configuration

Regardless of the platform in use, it is possible to have the FieldServer set its clock using the DNP 3.0 protocol when the driver is configured as a Server. The following actions are required:

•Configure the driver to perform remote updates (Node parameter ‘Real_Time_Clock_Control’ = ‘Update-from-Remote’.

•Set update frequency (Connection parameter ‘RTC_Update_Rqst_Interval’, default -2000. Value is specified in milliseconds. )

•Have the Client send the time using Object 50 variation 1 (Time & Date CTO: Absolute Time) to the Server. When the Server receives this time it will store the value in a Data Array, as well as use it to update the real time clock.

Example

//

Server Side Connections

 

 

Ports

 

 

 

port

,Baud

,Protocol

,RTC_Update_Rqst_Interval

P1

 

,2400

,DNP

,123

 

 

 

 

 

//

Server Side Nodes

 

 

 

Nodes

 

 

 

Node_Name

,Node_ID

,Protocol

,Real_Time_Clock_Control

Node_A

,11

,DNP

,Update-from-Remote

 

 

 

 

 

Map_Descriptors

 

 

 

 

 

 

 

 

Map_Descriptor_Name ,Data_Array_Name ,Data_Array_Offset

,Function

,Node_Name

,Address

,Length

,dnpDataType

,dnpDataVari

Store_Time

,DA_TIME

,0

,Server

,Node_A

,0

,50

,50

,1

In this example, the Server has been configured to request a time update every 123 milliseconds and the request will be made by notifying the remote device that an update is required. The Server does this by setting a flag in the response internal indications bits. The default update is 2 seconds. If using the default, omit the specification of the ‘RTC_Update_Rqst_Interval’ parameter.

Remote update of Real Time Clock – Client configuration

If using the DNP 3.0 driver as a Client and you want to configure the driver to respond to Server requests for real time clock updates then:

•Create a Data Array named ‘DNP3_RTC_NODEx’ where x is the Server node station address. The format for the Data Array should be UINT32.

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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Contents Driver Manual FS-8700-47 DNP Table of Contents FS-8700-47 DNP 3.0 Driver Manual Table of Contents DNP 3.0 Driver Description Page FS-8700-47 DNP 3.0 Driver Manual Hardware Connections Connection NotesConfiguring the FieldServer as a DNP 3.0 Driver Client Data ArraysClient Side Connection Descriptors Client Side Node DescriptorsDriver Specific Map Descriptor Parameters Timing Parameters Map Descriptor Example 1 Simple Read Map Descriptor Example 3 Simple Read Extract Value & Status Map Descriptor Example 4 Reading Class Data Map Descriptor Example 6 Read an unknown variation Configuring the FieldServer as a DNP 3.0 Driver Server Server Side Connection DescriptorsServer Side Node Descriptors Driver Specific Map Descriptor Parameters Map Descriptor Example 1 Discrete Data Map Descriptor Example 2 Class DataMap Descriptor Example 3 Class Data another example RTUMap Descriptor Example 4 Default Variation Variation zero Map Descriptor Example 5 ClassDataServingCtrl AnaInputs Map Descriptor Example 6 Unsolicited Messages Server Side Limitations Appendix A. Advanced Topics Appendix A.1. DNP 3.0 Protocol Appendix A.2. DNP Driver FunctionalityAppendix A.3. DNP Objects mapped to FieldServer Data Arrays Appendix A.4. Channel Idle, Master & Slave IdleAppendix A.5. DLL Layer Functionality in the Master Appendix A.6. App Layer Functionality in the MasterAppendix A.7. Internal Indications, Object 80 and Dnpii Incoming Internal Indications BytesPage Internal Indications reported in Responses ServerIIArrayResponses to Polls for Object 80 Internal Indications Appendix A.8. DNPStats DnpstatsAppendix A.9. DNP 3.0 Data Objects Counter Change Event All Variations See notes in Appendix A.10 for function code FS-8700-47 DNP 3.0 Driver Manual Appendix A.11. Controlling the DNP 3.0 Driver’s Qualifier Appendix A.12. FieldServer DNP Node NumberAppendix A.13. DnpSubType Appendix A.15. Link ResetAppendix A.14. Communication Stats Appendix A.16. Controlling DA Offsets Appendix A.17. dnpIndexStyleAppendix A.18. Real Time Clock Synchronization DatimePage Appendix A.19. Select and Operate Page Page Appendix A.20. Multiple requests in a single poll Appendix B. Driver Error Messages Page Page Page FYI
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