Gossen MetraWatt LonWorks ENERGYMID U228 W1 Series Bedienungsanleitung

Interface Description

ENERGYMID|EM

LON Interface for Energy Meters U228X-

, U238X-

3-349-908-03

4/10.

2 Gossen Metrawatt GmbH

Table of Contents

Table of Contents ....................................................................................................................................... 2

1General Information Regarding the LON Bus.............................................................................. 3

2Overview.......................................................................................................................................... 3

3Wiring............................................................................................................................................... 3

3.1 Network Topologies...................................................................................................................... 3

3.2 Recommendation.......................................................................................................................... 4

3.3 Use of Repeaters.......................................................................................................................... 4

3.5 Cable Type ................................................................................................................................... 4

3.6 Bus Termination............................................................................................................................ 5

4Network Interface ........................................................................................................................... 5

4.1 Network Variables......................................................................................................................... 5

4.2 Units of Measure and Resolution ............................................................................................... 14

4.3 Cutoff Date Function................................................................................................................... 15

4.4 Manufacturer-Specific Configuration Types (UCPTs) ................................................................ 15

5Control and Display Functions ................................................................................................... 16

5.1 Menu continued by meters with LON Interface .......................................................................... 16

5.2 Error Messages .......................................................................................................................... 17

5.3 Report Mask for All Objects........................................................................................................ 18

6Product Support ........................................................................................................................... 19

Gossen Metrawatt GmbH 3

1 General Information Regarding the LON Bus

The LON (local operating network) is a multi-network compatible communication system for distributed

applications.

Central control tasks are broken down into subtasks which are then executed in a decentralized

fashion. The subtasks are executed at so-called nodes without placing any load on the bus system.

Functional units are assigned to the nodes, for example those required for ascertaining measured

quantities.

The system can be centrally controlled, operated and configured via the LON interface by means of an

LNS plug-in for a Windows application.

The LON is used primarily in building automation applications.

2 Overview

Series U228x-W1 and U238x-W1 energy meters consist of 5 objects:

Node nodeObject

Voltmeter voltMeter

Ammeter amMeter

Energy meter energyMeter

Power meter powerMeter

3 Wiring

The most commonly used transmission medium for industrial and building management applications is

twisted pair copper cable, which is used together with the electrically isolated FTT-10A transceiver.

Both of the conductors can be connected to either pole, and installation is thus reverse polarity

protected.

Maximum transmission distances are influenced by the electrical characteristics of the cable and the

network topology. Utilized cables should comply with the stipulated specifications in order to prevent

interference during communication. Due to the possibility of reflections, only one cable type may be

used in any given bus segment.

3.1 Network Topologies

Where bus topologies are used, the individual devices are connected in parallel one after the other. A

bus terminating resistor must be used at each end. Only one bus terminator is required with free

topologies, but transmission distances are limited in this case.

The energy meters are not equipped with internal bus terminating resistors (see section 3.6 on page 3).

Bus topology

(bus terminator at both ends)

Free topology

(bus terminator at one end)

4 Gossen Metrawatt GmbH

3.2 Recommendation

The following recommendation is based upon experience gained by Gossen Metrawatt GmbH during

installation and start-up of LON systems. The environment within which the cable is laid has a decisive

influence on correct cable selection, and must therefore be taken into consideration during the

planning stage. All generally applicable directives for laying control and telecommunications cables

must be adhered to during installation.

3.3 Use of Repeaters

If repeaters are used the bus signal can be refreshed, thus increasing maximum possible transmission

distance. Due to response characteristics, only one passive repeater may be included in any given bus

segment. The transition to other physical transmission media, and/or targeted forwarding of data

packets to individual bus segments, is accomplished by means of routers.

3.4 Maximum Cable Lengths

Cable Type/

Designation

Bus Topology

(bus terminator at both ends)

Free Topology

(bus terminator at one end)

JY (ST) Y 2 x 2 x

0.8 mm

900 m

500 m

Max. 320 m device – device

UNITRONIC bus

cable

900 m

500 m

Max. 320 m device – device

Level IV, 22AWG

1400 m

500 m

Max. 400 m device – device

Belden 8471

2700 m

500 m

Max. 400 m device – device

Belden 85102

2700 m

500 m

Specified values apply to total cable length and are only valid for the FTT-10A transceiver.

3.5 Cable Type

Inexpensive wiring is possible for applications in environments with minimal interference using the

following cable type: JY (ST) Y 2 ea. 2 x 0.8 mm with twisted wire pairs. The above specified

dimension of 0.8 mm refers to the diameter of the wire, which results in a wire cross-section of

0.5 square mm.

In most cases no shielding is required. It may be possible to eliminate communications problems

occurring in environments with excessive interference by connecting the shield at one end. If cables

are used which contain several wire pairs, it may be advantageous if the individual pairs are shielded.

Special LON bus cable can be used for highly demanding requirements.

Gossen Metrawatt GmbH 5

3.6 Bus Termination

An adjustable bus terminator is frequently included in master stations which must be set in accordance

with the utilized topology. Additional bus terminators are required for bus topologies, and where

repeaters are used. These can be purchased as auxiliary LON component U1664 in top-hat rail mount

housing. Each unit includes a one-ended and a two-ended bus terminator.

4 Network Interface

4.1 Network Variables

Measured quantities and energy meter status information available within the network are defined as

standard network variable types (SNVT).

The software tools can be furnished with all information necessary for integration by accessing the

website of Gossen Metrawatt GmbH at www.gossenmetrawatt.com.

Node – nodeObject ObjectId: 0

Index

Network Variable

Data Type

Description

nviRequest

SNVT_obj_reque

Query object status

nviTimeSet

SNVT_time_stam

Set date and time

nvoStatus

SNVT_obj_status

Read out object status

nvoFileDirectory

SNVT_address

Start address of the configuration files

nvoOemType

SNVT_str_asc

Device type and features

nvoSerialNumber

SNVT_str_asc

Serial number and firmware version of the main program

nvoPowerUpHours

SNVT_time_hour

Operating hours since the last time operating voltage was

switched on

nvoActTime

SNVT_time_stam

Current time (updated once a minute).

Refe-

rence

Configuration Structure

Data Type

Description

Nv 2

cpMaxStsSendT

SCPTmaxSendTi

Maximum time until transmission of nvoStatus

Device

cpDevMajVer

SCPTdevMajVer

LON firmware version, read-only

Device

cpDevMinVer

SCPTdevMinVer

LON firmware version, read-only

Device

cpLocation

SCPTlocation

Installation location and meter number

Bus Terminator at Both Ends

100 µF / 50 V

105 Ω±1%

100 µF / 50 V

Bus Terminator at One End

100 µF / 50 V

52.3 Ω±1%

100 µF / 50 V

6 Gossen Metrawatt GmbH

Voltmeter – voltMeter ObjectId: 2

Index

Network Variable

Data Type

Description

Phase voltages

nvoU12

SNVT_volt_f

Phase-to-phase voltage, L1 and L2

nvoU23

SNVT_volt_f

Phase-to-phase voltage, L2 and L3

nvoU31

SNVT_volt_f

Phase-to-phase voltage, L3 and L1

nvoU1N

SNVT_volt_f

Phase-to-neutral voltage, L1 and N

nvoU2N

SNVT_volt_f

Phase-to-neutral voltage, L2 and N

nvoU3N

SNVT_volt_f

Phase-to-neutral voltage, L3 and N

nvoUAvg

SNVT_volt_f

Mean value of line-to-line voltage

nvoFreq

SNVT_freq_hz

Fundamental voltage frequency

nvoThdU1

SNVT_lev_percent

THD voltage L1

nvoThdU2

SNVT_lev_percent

THD voltage L2

nvoThdU3

SNVT_lev_percent

THD voltage L3

Refe-

rence

Configuration

Structure

Data Type

Description

Object

cpVoltMaxSndT

SCPTmaxSendTime

Send condition: maximum time until transmission of network

variables

44…50

cpVoltSndDelta

UCPTvoltSendDelta

Send condition: delta voltage

Nv 51

cpFreqSndDelta

UCPTfreqSendDelta

Send condition: delta frequency

Object

cpPTConnType

UCPTconnType

Voltage transformer connection type

Object

cpPTPrimary

UCPTptVoltagePrim

Nominal primary voltage of the voltage transformer

Object

cpPTSecondary

UCPTptVoltageSec

Nominal secondary voltage of the voltage transformer

Ammeter – amMeter ObjectId: 3

Index

Network Variable

Data Type

Description

Phase current

nvoI1

SNVT_amp_f

Current in phase L1

nvoI2

SNVT_amp_f

Current in phase L2

nvoI3

SNVT_amp_f

Current in phase L3

nvoIAvg

SNVT_amp_f

Phase current mean value

nvoIN

SNVT_amp_f

Calculated neutral conductor current

nvoThdI1

SNVT_lev_percent

THD current I1

nvoThdI2

SNVT_lev_percent

THD current I2

nvoThdI3

SNVT_lev_percent

THD current I3

Refe-

rence

Configuration

Structure

Data Type

Description

Object

cpAmpMaxSndT

SCPTmaxSendTime

Send condition: maximum time until transmission of network

variables

55…59

cpAmpSndDelta

UCPTampSendDelta

Send condition: delta current

Objekt

cpCTConnType

UCPTconnType

Current transformer connection type, read only

Objekt

cpCTPrimary

UCPTctCurrentPrim

Nominal primary current transformer current

Objekt

cpCTSecondary

UCPTctCurrentSec

Nominal secondary current transformer current

Gossen Metrawatt GmbH 7

Power Meter powerMeter ObjectId: 4

Index

Network Variable

Data Type

Description

Active power

nvoWatTot

SNVT_power_f

Total active power, all 3 phases

nvoWat1

SNVT_power_f

Active power in phase L1

nvoWat2

SNVT_power_f

Active power in phase L2

nvoWat3

SNVT_power_f

Active power in phase L3

Reactive power

nvoVarTot

SNVT_power_f

Total reactive power, all 3 phases

nvoVar1

SNVT_power_f

Reactive power in phase L1

nvoVar2

SNVT_power_f

Reactive power in phase L2

nvoVar3

SNVT_power_f

Reactive power in phase L3

Power factor

nvoPwrFactrTot

SNVT_pwr_fact

Overall power factor

nvoPwrFactr1

SNVT_pwr_fact

Power factor in phase L1

nvoPwrFactr2

SNVT_pwr_fact

Power factor in phase L2

nvoPwrFactr3

SNVT_pwr_fact

Power factor in phase L3

Refe-

rence

Configuration

Structure

Data Type

Description

Object

cpPwrMaxSndT

SCPTmaxSendTime

Send condition: maximum time until transmission of

network variables

63…70

cpPwrSndDelta

UCPTpwrSendDelta

Send condition: delta power (active and reactive power)

71…74

cpPwrFacSndDelta

UCPTpwrFactSendDelta

Send condition: delta power factor

8 Gossen Metrawatt GmbH

Energy Meter – energyMeter ObjectId: 5

Index

Network Variable

Data Type

Description

OBIS

nviActiveTariff

UNVT_tariff

Tariff selection setting 1-8, 0 = hardware

selection

nvoActiveTariff

UNVT_tariff

Display of active tariff 1-8

nvokWhPosT1

SNVT_reg_val

Active energy import, all phases, tariff no. 1

1.8.1

nvokWhPosT2

SNVT_reg_val

Active energy import, all phases, tariff no. 2

1.8.2

nvokWhPosT3

SNVT_reg_val

Active energy import, all phases, tariff no. 3

1.8.3

nvokWhPosT4

SNVT_reg_val

Active energy import, all phases, tariff no. 4

1.8.4

nvokWhPosT5

SNVT_reg_val

Active energy import, all phases, tariff no. 5

1.8.5

nvokWhPosT6

SNVT_reg_val

Active energy import, all phases, tariff no. 6

1.8.6

nvokWhPosT7

SNVT_reg_val

Active energy import, all phases, tariff no. 7

1.8.7

nvokWhPosT8

SNVT_reg_val

Active energy import, all phases, tariff no. 8

1.8.8

nvokWhNegT1

SNVT_reg_val

Active energy supply, all phases, tariff no. 1

2.8.1

nvokWhNegT2

SNVT_reg_val

Active energy supply, all phases, tariff no. 2

2.8.2

nvokWhNegT3

SNVT_reg_val

Active energy supply, all phases, tariff no. 3

2.8.3

nvokWhNegT4

SNVT_reg_val

Active energy supply, all phases, tariff no. 4

2.8.4

nvokWhNegT5

SNVT_reg_val

Active energy supply, all phases, tariff no. 5

2.8.5

nvokWhNegT6

SNVT_reg_val

Active energy supply, all phases, tariff no. 6

2.8.6

nvokWhNegT7

SNVT_reg_val

Active energy supply, all phases, tariff no. 7

2.8.7

nvokWhNegT8

SNVT_reg_val

Active energy supply, all phases, tariff no. 8

2.8.8

nvokVArhPosT1

SNVT_reg_val

Reactive energy import, all phases, tariff no. 1

3.8.1

nvokVArhPosT2

SNVT_reg_val

Reactive energy import, all phases, tariff no. 2

3.8.2

nvokVArhPosT3

SNVT_reg_val

Reactive energy import, all phases, tariff no. 3

3.8.3

nvokVArhPosT4

SNVT_reg_val

Reactive energy import, all phases, tariff no. 4

3.8.4

nvokVArhPosT5

SNVT_reg_val

Reactive energy import, all phases, tariff no. 5

3.8.5

nvokVArhPosT6

SNVT_reg_val

Reactive energy import, all phases, tariff no. 6

3.8.6

nvokVArhPosT7

SNVT_reg_val

Reactive energy import, all phases, tariff no. 7

3.8.7

100

nvokVArhPosT8

SNVT_reg_val

Reactive energy import, all phases, tariff no. 8

3.8.8

101

nvokVArhNegT1

SNVT_reg_val

Reactive energy supply, all phases, tariff no. 1

4.8.1

102

nvokVArhNegT2

SNVT_reg_val

Reactive energy supply, all phases, tariff no. 2

4.8.2

103

nvokVArhNegT3

SNVT_reg_val

Reactive energy supply, all phases, tariff no. 3

4.8.3

104

nvokVArhNegT4

SNVT_reg_val

Reactive energy supply, all phases, tariff no. 4

4.8.4

105

nvokVArhNegT5

SNVT_reg_val

Reactive energy supply, all phases, tariff no. 5

4.8.5

106

nvokVArhNegT6

SNVT_reg_val

Reactive energy supply, all phases, tariff no. 6

4.8.6

107

nvokVArhNegT7

SNVT_reg_val

Reactive energy supply, all phases, tariff no. 7

4.8.7

108

nvokVArhNegT8

SNVT_reg_val

Reactive energy supply, all phases, tariff no. 8

4.8.8

109

nvoValWhTotPos

SNVT_reg_val

Total active energy import, not resettable

1.8.0

110

nvoValWhTotNeg

SNVT_reg_val

Total active energy export, not resettable

2.8.0

111

nvoValVArhTotPos

SNVT_reg_val

Total reactive energy import, not resettable

3.8.0

112

nvoValVArhTotNeg

SNVT_reg_val

Total reactive energy export, not resettable

4.8.0

113

nvoEnergyType

UNVT_energyType

Energy value is primary or secondary

114

nvoEnergyFlowHrs

SNVT_time_hour

Operating hours (exceeded with the meter’s

start-up threshold)

Refe-

rence

Configuration

Structure

Data Type

Description

Object

cpEnergyMaxSndT

SCPTmaxSendTime

Send condition: maximum time until

transmission of network variables

Object

cpEngyAccumMode

UCPTenergyAccumMode

Energy meter operating mode, read only

Gossen Metrawatt GmbH 9

Energy for U160x Summators – energyForU160x ObjectId: 1

Index

Network Variable

Data Type

Description

OBIS

nvokWhPosT1Pri

UNVT_energy_U160x

Primary active energy import, all phases, tariff no. 1

1.8.1

nvokWhPosT2Pri

UNVT_energy_U160x

Primary active energy import, all phases, tariff no. 2

1.8.2

nvokWhPosT3Pri

UNVT_energy_U160x

Primary active energy import, all phases, tariff no. 3

1.8.3

nvokWhPosT4Pri

UNVT_energy_U160x

Primary active energy import, all phases, tariff no. 4

1.8.4

nvokWhPosT5Pri

UNVT_energy_U160x

Primary active energy import, all phases, tariff no. 5

1.8.5

nvokWhPosT6Pri

UNVT_energy_U160x

Primary active energy import, all phases, tariff no. 6

1.8.6

nvokWhPosT7Pri

UNVT_energy_U160x

Primary active energy import, all phases, tariff no. 7

1.8.7

nvokWhPosT8Pri

UNVT_energy_U160x

Primary active energy import, all phases, tariff no. 8

1.8.8

nvokWhNegT1Pri

UNVT_energy_U160x

Primary active energy supply, all phases, tariff no. 1

2.8.1

nvokWhNegT2Pri

UNVT_energy_U160x

Primary active energy supply, all phases, tariff no. 2

2.8.2

nvokWhNegT3Pri

UNVT_energy_U160x

Primary active energy supply, all phases, tariff no. 3

2.8.3

nvokWhNegT4Pri

UNVT_energy_U160x

Primary active energy supply, all phases, tariff no. 4

2.8.4

nvokWhNegT5Pri

UNVT_energy_U160x

Primary active energy supply, all phases, tariff no. 5

2.8.5

nvokWhNegT6Pri

UNVT_energy_U160x

Primary active energy supply, all phases, tariff no. 6

2.8.6

nvokWhNegT7Pri

UNVT_energy_U160x

Primary active energy supply, all phases, tariff no. 7

2.8.7

nvokWhNegT8Pri

UNVT_energy_U160x

Primary active energy supply, all phases, tariff no. 8

2.8.8

nvokVArhPosT1Pri

UNVT_energy_U160x

Primary reactive energy import, all phases, tariff no. 1

3.8.1

nvokVArhPosT2Pri

UNVT_energy_U160x

Primary reactive energy import, all phases, tariff no. 2

3.8.2

nvokVArhPosT3Pri

UNVT_energy_U160x

Primary reactive energy import, all phases, tariff no. 3

3.8.3

nvokVArhPosT4Pri

UNVT_energy_U160x

Primary reactive energy import, all phases, tariff no. 4

3.8.4

nvokVArhPosT5Pri

UNVT_energy_U160x

Primary reactive energy import, all phases, tariff no. 5

3.8.5

nvokVArhPosT6Pri

UNVT_energy_U160x

Primary reactive energy import, all phases, tariff no. 6

3.8.6

nvokVArhPosT7Pri

UNVT_energy_U160x

Primary reactive energy import, all phases, tariff no. 7

3.8.7

nvokVArhPosT8Pri

UNVT_energy_U160x

Primary reactive energy import, all phases, tariff no. 8

3.8.8

nvokVArhNegT1Pri

UNVT_energy_U160x

Primary reactive energy supply, all phases, tariff no. 1

4.8.1

nvokVArhNegT2Pri

UNVT_energy_U160x

Primary reactive energy supply, all phases, tariff no. 2

4.8.2

nvokVArhNegT3Pri

UNVT_energy_U160x

Primary reactive energy supply, all phases, tariff no. 3

4.8.3

nvokVArhNegT4Pri

UNVT_energy_U160x

Primary reactive energy supply, all phases, tariff no. 4

4.8.4

nvokVArhNegT5Pri

UNVT_energy_U160x

Primary reactive energy supply, all phases, tariff no. 5

4.8.5

nvokVArhNegT6Pri

UNVT_energy_U160x

Primary reactive energy supply, all phases, tariff no. 6

4.8.6

nvokVArhNegT7Pri

UNVT_energy_U160x

Primary reactive energy supply, all phases, tariff no. 7

4.8.7

nvokVArhNegT8Pri

UNVT_energy_U160x

Primary reactive energy supply, all phases, tariff no. 8

4.8.8

nvokWhPosPri

UNVT_energy_U160x

Primary active energy import, all tariffs

1.8.0

nvokWhNegPri

UNVT_energy_U160x

Primary active energy supply, all tariffs

2.8.0

nvokVArhPosPri

UNVT_energy_U160x

Primary reactive energy import, all tariffs

3.8.0

nvokVArhNegPri

UNVT_energy_U160x

Primary reactive energy supply, all tariffs

4.8.0

10 Gossen Metrawatt GmbH

The object includes processed energy values with corresponding power value and error status for

series U160x summators.

typedef struct {

SNVT_reg_val Energy;

SNVT_power_f Power;

unsigned long Error

}UNVT_energy_U160x

Variable

Meaning

Power

Primary value

Error

The EnergyValUncalib bit indicates whether the queried value is calibrated (0) or un-calibrated (1).

typedef struct{ // for U160x

// Hi-Byte

unsigned Dummy1 : 5;

unsigned Analog : 1; // error in analog part x04

unsigned Calibration : 1; // no calibration x02

unsigned Energy : 1; // EEPROM defective x01

// Lo-Byte

unsigned Dummy1 : 1;

unsigned EnergyValUncalib : 1; // energy value cannot be calibrated x40

unsigned NoSync : 1; // no synchronization x20

unsigned HiVoltage : 1; // voltage too high x10

unsigned CurrentDir : 1; // incorrect current direction x08

unsigned RotationDir : 1; // incorrect phase rotation direction x04

unsigned LoVoltage : 1; // phase failure x02

unsigned HiCurrent : 1; // current too high x01

} error_struct Error;

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