Gossen MetraWatt LonWorks ENERGYMID U228 W1 Series User manual

Interface Description
ENERGYMID|EM
LON Interface for Energy Meters U228X- W1 , U238X- W1
3-349-908-03
4/10.
20

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.

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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
0
nviRequest
SNVT_obj_reque
st
Query object status
1
nviTimeSet
SNVT_time_stam
p
Set date and time
2
nvoStatus
SNVT_obj_status
Read out object status
3
nvoFileDirectory
SNVT_address
Start address of the configuration files
4
nvoOemType
SNVT_str_asc
Device type and features
5
nvoSerialNumber
SNVT_str_asc
Serial number and firmware version of the main program
6
nvoPowerUpHours
SNVT_time_hour
Operating hours since the last time operating voltage was
switched on
7
nvoActTime
SNVT_time_stam
p
Current time (updated once a minute).
Refe-
rence
Configuration Structure
Data Type
Description
Nv 2
cpMaxStsSendT
SCPTmaxSendTi
me
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

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Voltmeter – voltMeter ObjectId: 2
Index
Network Variable
Data Type
Description
Phase voltages
44
nvoU12
SNVT_volt_f
Phase-to-phase voltage, L1 and L2
45
nvoU23
SNVT_volt_f
Phase-to-phase voltage, L2 and L3
46
nvoU31
SNVT_volt_f
Phase-to-phase voltage, L3 and L1
47
nvoU1N
SNVT_volt_f
Phase-to-neutral voltage, L1 and N
48
nvoU2N
SNVT_volt_f
Phase-to-neutral voltage, L2 and N
49
nvoU3N
SNVT_volt_f
Phase-to-neutral voltage, L3 and N
50
nvoUAvg
SNVT_volt_f
Mean value of line-to-line voltage
51
nvoFreq
SNVT_freq_hz
Fundamental voltage frequency
52
nvoThdU1
SNVT_lev_percent
THD voltage L1
53
nvoThdU2
SNVT_lev_percent
THD voltage L2
54
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
Nv
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
55
nvoI1
SNVT_amp_f
Current in phase L1
56
nvoI2
SNVT_amp_f
Current in phase L2
57
nvoI3
SNVT_amp_f
Current in phase L3
58
nvoIAvg
SNVT_amp_f
Phase current mean value
59
nvoIN
SNVT_amp_f
Calculated neutral conductor current
60
nvoThdI1
SNVT_lev_percent
THD current I1
61
nvoThdI2
SNVT_lev_percent
THD current I2
62
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
Nv
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
63
nvoWatTot
SNVT_power_f
Total active power, all 3 phases
64
nvoWat1
SNVT_power_f
Active power in phase L1
65
nvoWat2
SNVT_power_f
Active power in phase L2
66
nvoWat3
SNVT_power_f
Active power in phase L3
Reactive power
67
nvoVarTot
SNVT_power_f
Total reactive power, all 3 phases
68
nvoVar1
SNVT_power_f
Reactive power in phase L1
69
nvoVar2
SNVT_power_f
Reactive power in phase L2
70
nvoVar3
SNVT_power_f
Reactive power in phase L3
Power factor
71
nvoPwrFactrTot
SNVT_pwr_fact
Overall power factor
72
nvoPwrFactr1
SNVT_pwr_fact
Power factor in phase L1
73
nvoPwrFactr2
SNVT_pwr_fact
Power factor in phase L2
74
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
Nv
63…70
cpPwrSndDelta
UCPTpwrSendDelta
Send condition: delta power (active and reactive power)
Nv
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
75
nviActiveTariff
UNVT_tariff
Tariff selection setting 1-8, 0 = hardware
selection
76
nvoActiveTariff
UNVT_tariff
Display of active tariff 1-8
77
nvokWhPosT1
SNVT_reg_val
Active energy import, all phases, tariff no. 1
1.8.1
78
nvokWhPosT2
SNVT_reg_val
Active energy import, all phases, tariff no. 2
1.8.2
79
nvokWhPosT3
SNVT_reg_val
Active energy import, all phases, tariff no. 3
1.8.3
80
nvokWhPosT4
SNVT_reg_val
Active energy import, all phases, tariff no. 4
1.8.4
81
nvokWhPosT5
SNVT_reg_val
Active energy import, all phases, tariff no. 5
1.8.5
82
nvokWhPosT6
SNVT_reg_val
Active energy import, all phases, tariff no. 6
1.8.6
83
nvokWhPosT7
SNVT_reg_val
Active energy import, all phases, tariff no. 7
1.8.7
84
nvokWhPosT8
SNVT_reg_val
Active energy import, all phases, tariff no. 8
1.8.8
85
nvokWhNegT1
SNVT_reg_val
Active energy supply, all phases, tariff no. 1
2.8.1
86
nvokWhNegT2
SNVT_reg_val
Active energy supply, all phases, tariff no. 2
2.8.2
87
nvokWhNegT3
SNVT_reg_val
Active energy supply, all phases, tariff no. 3
2.8.3
88
nvokWhNegT4
SNVT_reg_val
Active energy supply, all phases, tariff no. 4
2.8.4
89
nvokWhNegT5
SNVT_reg_val
Active energy supply, all phases, tariff no. 5
2.8.5
90
nvokWhNegT6
SNVT_reg_val
Active energy supply, all phases, tariff no. 6
2.8.6
91
nvokWhNegT7
SNVT_reg_val
Active energy supply, all phases, tariff no. 7
2.8.7
92
nvokWhNegT8
SNVT_reg_val
Active energy supply, all phases, tariff no. 8
2.8.8
93
nvokVArhPosT1
SNVT_reg_val
Reactive energy import, all phases, tariff no. 1
3.8.1
94
nvokVArhPosT2
SNVT_reg_val
Reactive energy import, all phases, tariff no. 2
3.8.2
95
nvokVArhPosT3
SNVT_reg_val
Reactive energy import, all phases, tariff no. 3
3.8.3
96
nvokVArhPosT4
SNVT_reg_val
Reactive energy import, all phases, tariff no. 4
3.8.4
97
nvokVArhPosT5
SNVT_reg_val
Reactive energy import, all phases, tariff no. 5
3.8.5
98
nvokVArhPosT6
SNVT_reg_val
Reactive energy import, all phases, tariff no. 6
3.8.6
99
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
8
nvokWhPosT1Pri
UNVT_energy_U160x
Primary active energy import, all phases, tariff no. 1
1.8.1
9
nvokWhPosT2Pri
UNVT_energy_U160x
Primary active energy import, all phases, tariff no. 2
1.8.2
10
nvokWhPosT3Pri
UNVT_energy_U160x
Primary active energy import, all phases, tariff no. 3
1.8.3
11
nvokWhPosT4Pri
UNVT_energy_U160x
Primary active energy import, all phases, tariff no. 4
1.8.4
12
nvokWhPosT5Pri
UNVT_energy_U160x
Primary active energy import, all phases, tariff no. 5
1.8.5
13
nvokWhPosT6Pri
UNVT_energy_U160x
Primary active energy import, all phases, tariff no. 6
1.8.6
14
nvokWhPosT7Pri
UNVT_energy_U160x
Primary active energy import, all phases, tariff no. 7
1.8.7
15
nvokWhPosT8Pri
UNVT_energy_U160x
Primary active energy import, all phases, tariff no. 8
1.8.8
16
nvokWhNegT1Pri
UNVT_energy_U160x
Primary active energy supply, all phases, tariff no. 1
2.8.1
17
nvokWhNegT2Pri
UNVT_energy_U160x
Primary active energy supply, all phases, tariff no. 2
2.8.2
18
nvokWhNegT3Pri
UNVT_energy_U160x
Primary active energy supply, all phases, tariff no. 3
2.8.3
19
nvokWhNegT4Pri
UNVT_energy_U160x
Primary active energy supply, all phases, tariff no. 4
2.8.4
20
nvokWhNegT5Pri
UNVT_energy_U160x
Primary active energy supply, all phases, tariff no. 5
2.8.5
21
nvokWhNegT6Pri
UNVT_energy_U160x
Primary active energy supply, all phases, tariff no. 6
2.8.6
22
nvokWhNegT7Pri
UNVT_energy_U160x
Primary active energy supply, all phases, tariff no. 7
2.8.7
23
nvokWhNegT8Pri
UNVT_energy_U160x
Primary active energy supply, all phases, tariff no. 8
2.8.8
24
nvokVArhPosT1Pri
UNVT_energy_U160x
Primary reactive energy import, all phases, tariff no. 1
3.8.1
25
nvokVArhPosT2Pri
UNVT_energy_U160x
Primary reactive energy import, all phases, tariff no. 2
3.8.2
26
nvokVArhPosT3Pri
UNVT_energy_U160x
Primary reactive energy import, all phases, tariff no. 3
3.8.3
27
nvokVArhPosT4Pri
UNVT_energy_U160x
Primary reactive energy import, all phases, tariff no. 4
3.8.4
28
nvokVArhPosT5Pri
UNVT_energy_U160x
Primary reactive energy import, all phases, tariff no. 5
3.8.5
29
nvokVArhPosT6Pri
UNVT_energy_U160x
Primary reactive energy import, all phases, tariff no. 6
3.8.6
30
nvokVArhPosT7Pri
UNVT_energy_U160x
Primary reactive energy import, all phases, tariff no. 7
3.8.7
31
nvokVArhPosT8Pri
UNVT_energy_U160x
Primary reactive energy import, all phases, tariff no. 8
3.8.8
32
nvokVArhNegT1Pri
UNVT_energy_U160x
Primary reactive energy supply, all phases, tariff no. 1
4.8.1
33
nvokVArhNegT2Pri
UNVT_energy_U160x
Primary reactive energy supply, all phases, tariff no. 2
4.8.2
34
nvokVArhNegT3Pri
UNVT_energy_U160x
Primary reactive energy supply, all phases, tariff no. 3
4.8.3
35
nvokVArhNegT4Pri
UNVT_energy_U160x
Primary reactive energy supply, all phases, tariff no. 4
4.8.4
36
nvokVArhNegT5Pri
UNVT_energy_U160x
Primary reactive energy supply, all phases, tariff no. 5
4.8.5
37
nvokVArhNegT6Pri
UNVT_energy_U160x
Primary reactive energy supply, all phases, tariff no. 6
4.8.6
38
nvokVArhNegT7Pri
UNVT_energy_U160x
Primary reactive energy supply, all phases, tariff no. 7
4.8.7
39
nvokVArhNegT8Pri
UNVT_energy_U160x
Primary reactive energy supply, all phases, tariff no. 8
4.8.8
40
nvokWhPosPri
UNVT_energy_U160x
Primary active energy import, all tariffs
1.8.0
41
nvokWhNegPri
UNVT_energy_U160x
Primary active energy supply, all tariffs
2.8.0
42
nvokVArhPosPri
UNVT_energy_U160x
Primary reactive energy import, all tariffs
3.8.0
43
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;