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05-4874A01-A - GE Digital Energy
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1. Binary Input Points Static Steady State Object Number 1 Change Event Object Number N A Static Variation reported when variation 0 requested 1 Binary Input without status Change Event Variation reported when variation 0 requested N A Default Change Event Name Description Assigned Class 1 2 3 0r none NETio Base Module Type 1 Expansion Module Type 2 Expansion Module Type 4 Expansion Module Type 6 Expansion Module Type 7 Expansion Module NETio Base Module Type 1 Expansion Module Type 2 Expansion Module Type 4 Expansion Module Type 6 Expansion Module Type 2 Expansion Module Type 4 Expansion Module Type 2 Expansion Module Type 4 Expansion Module Type 2 Expansion Module Type 2 Expansion Module Page 10 of 15 1 2 Binary Output Status Points and Control Relay Output Blocks The following table lists both the Binary Output Status Points Object 10 and the Control Relay Output Blocks Object 12 Although writes can be performed directly on Binary Output Status Points Control Relay Output Blocks CROB have been included for completeness Performing select operate commands on CROBs has the same effect as performing write commands to Binary Output Status Points and vice versa Reading a CROB has the same effect as reading the corresponding Binary Output Status Point and vice versa Binary Output Status Points Object Number 10 Default Variation reported when variation 0 requested 2 Binary Output Statu
2. no range ora no range ora no range ora no range ora start stop start stop start stop start stop start stop 17 28 index 1 read 06 no range or all start stop Function Codes Qualifier Codes dec hex response 129 response 129 response start stop start stop start stop start stop 00 01 start stop 00 01 start stop 129 response 00 01 start stop write see note 3 13 cold restart 14 warm restart No Object function code only No Object function code only start stop Page 8 of 15 Note 1 A Default variation refers to the variation responded when variation 0 is requested and or in class 0 scans Note 2 For static non change event objects qualifiers 17 or 28 are only responded when a request is sent with qualifiers 17 or 28 respectively Otherwise static object requests sent with qualifiers 00 01 06 07 or 08 will be responded with qualifiers 00 or 01 Note 3 Writes of Internal Indications are only supported for index 7 Restart IIN1 7 Note 4 For binary and analog objects Objects 1 10 30 40 the value of the requested point defaults to 0 zero when an error has occurred during a read operation Page 9 of 15 DNP Point Lists Supported Functions The tables below identify all the default data points provided by the NETio base module and expansion modules 1 1 Binary Input Points
3. 0 Zero Offset 19 41 milliamps A DNP command to generate a 12 6 milliamp would use the following count value 12 6 Milliamps 4 0 Zero Offset 8 6 milliamps 8 6 00048829 17613 counts 0 5 Volt and 0 10 Volt Signals For 0 5 Volt inputs and outputs the conversion factor is 00015259 For 0 10 Volt I O the conversion factor is 00030518 Since the range begins a zero 0 there is not offset needed Therefore A count value of 24320 read from NETio equals Fora 0 5 Volt Input 24320 X 00015259 3 72 Volts For a 0 10 Volt Input 24320 X 00030518 7 44 Volts A DNP command to generate a 3 4 Volt would use the following count value For a 0 5 Volt Output 3 4 00015259 22281 counts For a 0 10 Volt Output 3 4 00030518 11141 counts This level of resolution is for mathematical calculation purposes only The NETio does not support the use all of the digits displayed in these examples Page 15 of 15
4. DNP addresses the DNP ID In order to access digital output 1 on the NETio Base Module send a DNP message with the following DNP Destination Address Object Id Point Index 0x0500 Ox0A 0x00 In order to access digital output 6 on the NETio Expansion Module send a DNP message with the following DNP Destination Address Object Id Point Index 0x0539 0x0A 0x05 See the NETio DNP Device Profile for a list of supported Objects Variations and Indexes for each module type Page 4 of 15 DNP V3 0 Device Profile Document Supported Functions DNP V3 0 DEVICE PROFILE DOCUMENT Also see the DNP 3 0 Implementation Table Vendor Name GEMDS Device Name NETio EB Highest DNP Level Supported Device Function For Requests Level 1 O Master For Responses Level 1 Slave Notable objects functions and or qualifiers supported in addition to the Highest DNP Levels Supported the complete list is described in the attached table For static non change event object requests request qualifier codes 07 and 08 limited quantity and 17 and 28 index are supported Static object requests sent with qualifiers 07 or 08 will be responded with qualifiers 00 or 01 Maximum Data Link Frame Size octets Maximum Application Fragment Size octets Transmitted 292 Transmitted 249 Received 292 Received 249 Maximum Data Link Re tries Maximum Application Layer Re tries None None
5. Fixed O Configurable 0 3 Configurable from 0 to 255 Requires Data Link Layer Confirmation Never Always Sometimes Configurable as Never Only for multi frame messages or Always Requires Application Layer Confirmation Never Always When reporting Event Data When sending multi fragment responses Sometimes Configurable as Only when reporting event data or When reporting event data or multi fragment messages Page 5 of 15 DNP V3 0 DEVICE PROFILE DOCUMENT Also see the DNP 3 0 Implementation Table Timeouts while waiting for Data Link Confirm Complete Appl Fragment Application Confirm Complete Appl Response K k k K Others Sends Executes Control Operations WRITE Binary Outputs SELECT OPERATE DIRECT OPERATE DIRECT OPERATE NO ACK Count gt 1 Pulse On Pulse Off Latch On Latch Off Queue Clear Queue Never Never Never Never Never Never Never Never Never Never Never Fixedat Fixedat Fixedat___ Fixedat Always Always Always Always Always Always Always Always Always Always Always Variable Variable Variable Variable Sometimes Sometimes Sometimes Sometimes Sometimes Sometimes Sometimes Sometimes Sometimes Sometimes Sometimes Configurable Configurable Configurable Configurable Configurable Configurable Configurable Configurable Configurable Configurable C
6. GE MDS LLC NETio Series DNP V3 Protocol Communications Supplement GE MDS Part No 05 4874A01 Rev A March 2009 DNP Protocol NETio Implementation Summary This document summarizes the implementation of the DNP V3 00 protocol in NETio There are a number of important considerations about the DNP implementation in NETio that a user should understand 1 NETio implementation of DNP is Poll Response sometimes also referred to as Master Slave NETio modules never initiate communication on their own They communicate only in response to messages and commands issued by host DNP devices 2 NETio supports serial DNP and DNP over UDP TCP sometimes referred to as DNP Ethernet DNP over UDP TCP requires the use of a NETio AP or an entraNET Access point with the NETio firmware support option 3 NETio Remotes Base and Expansion Modules only support the direct interrogation of connected I O using DNP over UDP TCP when the host device is connected to the Ethernet port of the NETio Access Point or entraNET Access Point 4 NETio requires that DNP messages and commands must be issued to each NETio module Remote Base Module Expansion Module or wireless Expansion Module Range requests and commands cannot include more than one module each module must be accessed individually The DNP ID is assigned to a NETio Remote Base Module and shared by all Expansion Modules physically connected or wirelessly associated with it via WeXP IMPORTANT Ma
7. e of a DNP network a NETio Base Module along with its Expansion Modules will appear as independent DNP devices although communication with the Expansion Modules is only possible through the Base Module In terms of DNP each Base Module and Expansion Module s has an independent and static I O point list To address a specific I O point DNP uses addresses Object numbers Variation numbers and Index numbers The definition of Objects Variations and Indexes are described in the DNP specifications Page 3 of 15 DNP uses 16 bit addressing ranging from 0x0000 to OxFFFF The NETio however does not make use of the multicast addresses OxFFFO to OxFFFF The NETio usage of the remaining Unicast address range is that the upper byte is common to a Base Module and it s Expansions call this the DNP Id of the NETio unit while the lower byte is used to select the Base Module or a particular Expansion Module The Base Module is addressed by using a lower byte value of 0x0 zero while Expansion Modules are addressed by using the module s Id as the lower byte value ox 4 me J c V ye pions Module Id Address Each NETio module Base or Expansion acts as an independent DNP device therefore I O points start at index 0x0 zero for each module Examples A NETio Base Module has one Type 3 Expansion Module with a Module ID configured to 0x39 The NETio Base Modules has been configured to use the value 0x05 as the upper byte of
8. ield File Events Assigned to Class File Events Send Immediately Multiple Blocks in a Fragment Max Number of Files Open 0 Page 7 of 15 DNP V3 0 Implementation Table Supported Objects OBJECT Object Variation Number Binary Input Any Variation 1 1 Binary Input default see note 1 Binary Input with Status 00 01 00 01 06 00 01 06 gt 00 01 06 e Binary Output Any Variation 00 01 06 m oO Binary Output 00 01 06 p Binary Output Status 2 default see note 1 bh Control Relay Output Block So select operate direct op dir op noack 1 Control Relay Output Block default see note 1 00 01 Analog Input Any Variation a 00 01 16 Bit Analog Input dE 00 01 16 Bit Analog Input without Flag i default see note 1 00 01 Analog Output Status Pa 00 01 2 16 Bit Analog Output Status a default see note 1 Analog Output Block select operate direct op dir op noack 2 16 Bit Analog Output Block default see note 1 a Class 0 Data default to class 0 oe eee 8 Internal Indications o Ea read 00 01 no range ora no range ora no range ora no range ora no range ora no range ora start stop start stop start stop start stop start stop Function Qualifier Codes Codes dec hex 06 start stop index no range ora
9. ke sure the DNP driver you are using in the host device support non contiguous addressing Reading and understanding the remainder of this document will simplify the configuration of DNP3 in your NETio system Page 2 of 15 DNP Protocol NETio Architectural Implementation As described in detail below the DNP V3 00 protocol is a master slave protocol ANETio Base Module and its associated Expansion Modules each have unique DNP addresses Accessing all I O points from a NETio unit will require separate DNP messages for the base and it s expansions A NETio Base Module will process DNP messages that come from one of three sources depending upon how the user has configured it a The source is over the air from a NETio AP or entraNET AP This method allows a NETio Base Module to wirelessly communicate with a DNP Master device or system via the NETio AP or entraNET Access Point The Access Point is where the physical connection to the DNP host is made The connection can be serial or DNP over UDP TCP see the NETio Manual for instructions on how to configure these options b The source is local This method allows a NETio Base Module to communicate with a DNP Master device or system physically connected to the serial communication port on the NETio Base Module See Local Master Mode Protocol Pass Through and Direct Mode in the NETio Manual for additional details c The source is over the air from a Direct Mode root or Direct Mode node This
10. method allows a NETio Base Module to wirelessly communicate with a DNP Master device or system via another NETio Base Module One of the NETio Base Modules is where the physical connection from the DNP host is made to the serial port of the Direct Mode root See Local Master Mode Protocol Pass Through and Direct Mode in the NETio Manual for additional details Electrical Interface Access Point The hardware or electrical interface is either the COM2 RS232 connection or the LAN Ethernet interface on the front faceplate of the Access Point module Data flow is half duplex That is data is never transmitted and received at the same time Shielded wire should always be used to minimize noise Refer to the EntraNET Access Point User Manual for correct serial and Ethernet port wiring Electrical Interface NETio Base Module The hardware or electrical interface is the COM1 RJ45 RS232 connection on the front panel of the NETio module Data flow is half duplex That is data is never transmitted and received at the same time Shielded wire should always be used to minimize noise Refer to the NETio User Manual for correct serial port wiring Device Profile Document When configured as a DNP device the NETio Base Module supports the features listed in the Level 1 DNP V3 00 Implementation DNP L1 described in Chapter 2 of the subset definitions See the DNP protocol website at http www dnp org for details NETio Point Addressing Within the scop
11. onfigurable Configurable Configurable Configurable Configurable Explanation of Configurable an output must be set to Protocol Mode via menu configuration for any output control operations to be successfully performed The On Off times and Count value are ignored Reports Binary Input Change Events when no specific variation requested Never Only time tagged Only non time tagged Configurable to send one or the other Sends Unsolicited Responses Never Configurable Only certain objects Sometimes attach explanation ENABLE DISABLE UNSOLICITED Function codes supported Reports time tagged Binary Input Change Events when no specific variation requested Never Binary Input Change With Time Binary Input Change With Relative Time Configurable Sends Static Data in Unsolicited Responses Never When Device Restarts O When Status Flags Change No other options are permitted Page 6 of 15 DNP V3 0 DEVICE PROFILE DOCUMENT Also see the DNP 3 0 Implementation Table Default Counter Object Variation Counters Roll Over at No Counters Reported No Counters Reported Configurable Configurable attach explanation Default Object 16 Bits Default Variation 32 Bits Point by point list attached Other Value Point by point list attached Sends Multi Fragment Responses 1 Yes No Configurable Sequential File Transfer Support Append File Mode Custom Status Code Strings Permissions F
12. s Control Relay Output Blocks Object Number 12 Point eta Supported Control Relay Name Description Output Block Fields NETio Base Module LATCH_ON LATCH_OFF Type 1 Expansion Module Type 3 Expansion Module Type 6 Expansion Module Type 7 Expansion Module Type 3 Expansion Module LATCH_ON LATCH_OFF Type 7 Expansion Module Type 3 Expansion Module LATCH_ON LATCH_OFF Type 3 Expansion Module LATCH_ON LATCH_OFF Type 3 Expansion Module LATCH_ON LATCH_OFF 1 NETio Base Module LATCH_ON LATCH_OFF Type 1 Expansion Module Type 3 Expansion Module Type 6 Expansion Module Type 7 Expansion Module Page 11 of 15 1 3 Analog Inputs The following table lists Analog Inputs Object 30 It is important to note that Analog Inputs are transmitted through DNP as signed numbers Scaling is not available Analog Inputs Static Steady State Object Number 30 Change Event Object Number N A Static Variation reported when variation 0 requested 4 16 Bit Analog Input without Flag Change Event Variation reported when variation 0 requested N A Default Change Event Assigned Class 1 2 3 or none Name Description Default Deadband NETio Base Module Type 1 Expansion Module Type 4 Expansion Module Type 6 Expansion Module Type 7 Expansion Module 1 Type 4 Expansion Module Type 6 Expansion Module Type 7 Expansion Module Page 12 of 15 1 4 Analog Output Status Points and Analog Output Control Blocks The following table lists bo
13. th the Analog Output Status Points Object 40 and the Analog Output Control Blocks Object 41 It is important to note that Analog Output Control Blocks and Analog Output Statuses are transmitted through DNP as signed numbers Scaling is not available Analog Output Status Points Object Number 40 Default Variation reported when variation 0 requested 2 16 Bit Analog Output Status Analog Output Blocks Object Number 41 Name Description NETio Base Module Type 1 Expansion Module Type 6 Expansion Module Type 6 Expansion Module Page 13 of 15 Converting NETio A D Counts in Full Scale Mode All NETio Analog Input and Output values are represented internally in A D counts The actual value represented by the counts is based upon whether the analog point is configured as a current or voltage signal 4 20 mA Signals For 4 20 mA current inputs or outputs the conversion factor is 00024414 In addition because the range of the signal is offset from zero 0 by 4 mA the number 4 must be added to the converted number to get actual milliamps Therefore A count value of 31534 read from NETio equals 31584 X 00024414 7 71 milliamps 7 70 4 0 Zero Offset 11 71 milliamps A DNP command to generate a 12 6 milliamp would use the following count value 12 6 Milliamps 4 0 Zero Offset 8 6 milliamps 8 6 00024414 35246 counts 0 5 Volt and 0 10 Volt Signals For 0 5 Volt inputs and outputs the conversion fac
14. tor is 000076295 For 0 10 Volt I O the conversion factor is 00015259 Since the range begins a zero 0 there is not offset needed Therefore A count value of 54320 read from NETio equals For a 0 5 Volt Input 54320 X 000076295 4 14 Volts For a 0 10 Volt Input 54320 X 00015259 8 28 Volts A DNP command to generate a 3 4 Volt would use the following count value For a 0 5 Volt Output 3 4 000076295 44564 counts For a 0 10 Volt Output 3 4 00015259 22295 counts This level of resolution is for mathematical calculation purposes only The NETio does not support the use all of the digits displayed in these examples Page 14 of 15 Converting NETio A D Counts with Analog Half Scaling Enabled When the Analog Half Scaling variable is enabled to allow DNP messages to utilize the 16 bit variation of analog read write requests the full A D range of NETio is 0 32767 All NETio Analog Input and Output values are represented internally in A D counts The actual value represented by the counts is based upon whether the analog point is configured as a current or voltage signal 4 20 mA Signals For 4 20 mA current inputs or outputs the conversion factor is 00048829 In addition because the range of the signal is offset from zero 0 by 4 mA the number 4 must be added to the converted number to get actual milliamps Therefore A count value of 31534 read from NETio equals 31584 X 00048829 15 42 milliamps 15 41 4
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