Gossen MetraWatt U1601 User manual

U1601, U1602, U1603
Summators – Energy Control System ECS 3-348-869-03
15/1.21
Operating Instructions

2Gossen Metrawatt GmbH
Device Overview
Contents Page
1 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Instrument Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 Instrument Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 Channels / Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.3 Inputs E1 ... E12 and E1 ... E6 respectively (analog / binary) . . . . . . . . . . . . . 8
3.4 Analog Outputs A1 and A2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.5 S0 Outputs S1 through S4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.6 Relay Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.7 Self Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.8 RS232 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.9 ECS LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.10 LAN LED (LANL/LANR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.11 LON Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.12 LON LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4 Measurement Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.1 Overview of Available Measurement Data. . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2 Synchronizing-Interval Data Logger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Characteristics U1601 U1602 U1603
64 channels ✔✔✔
Analog inputs / S0 I1 ... I12 — I1 ... I6
Binary outputs S1 ... S4 — S1 ... S4
Analog outputs O1, O2, — O1, O2,
Relay outputs
Relay 1, relay 2, status Status Relay 1, relay 2, status
RS 232 COM1 / COM2 ✔ (in a single plug) ✔✔
LANL / LANR ✔✔ ✔
LON ✔✔ ✔
24 V auxiliary power ✔✔ ✔
Control panel ✔——
LON LED
page 13
LAN LED
page 13 ESC Key
Menu Key
Enter Key
Status LED
page 9
RS 232
Interface
page 9

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5 Operation (menu displays) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.1 Menu: Overview (main menu display) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.2 Menu 1: Display Total Energy, Power and Costs . . . . . . . . . . . . . . . . . . . . . 19
5.3 Menu 2: Display Interval Energy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.4 Menu 3: Display Maximum Values for Interval Energy . . . . . . . . . . . . . . . . . . 21
5.5 Menu 4: Display Analog Inputs and Outputs . . . . . . . . . . . . . . . . . . . . . . . . 22
5.6 In-Service Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.7 Menu: Display Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.8 Menu 5: Display Status Menu (time, relays, errors, interfaces). . . . . . . . . . . . 26
6 Basic Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.1 Setup Parameters Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.2 Setup Selection Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.3 Station Parameters (IDs, intervals, tariffs, outputs, ... ) . . . . . . . . . . . . . . . . . 30
6.4 (Channel) Parameters (mode, name, units, displays, ... ) . . . . . . . . . . . . . . . . 33
6.5 RS232 Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.6 LON Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.7 ECS LAN Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.8 SETUP Sub-Menus (edit, erase, outputs, bootstrap loader, password). . . . . 40
6.9 Firmware Update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6.10 Master Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.11 Basic Software Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
7 Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
7.1 Terminal Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
7.2 Input and Output Configuration (DIP switches) . . . . . . . . . . . . . . . . . . . . . . . 50
7.3 Interface Pin Assignments, Connector Cable . . . . . . . . . . . . . . . . . . . . . . . . 50
8 Meter Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
9 Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
9.1 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
9.2 Parameters Configuration and Data Visualization at a PC . . . . . . . . . . . . . . . 55
10 Characteristic Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
11 LON Bus System Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
11.1 Maximum Cable Lengths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
11.2 Cable Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
11.3 Bus Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
12 Connecting LON Bus Compatible Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
12.1 Network Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
12.2 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
12.3 Device Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
12.4 Reinstalling a LON Device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
12.5 Configuration at a PC with ECSwin Software . . . . . . . . . . . . . . . . . . . . . . . . 71
12.6 Replacing a LON Device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
12.7 Additional LON Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
12.8 Channel Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
13 Functions Overviews . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
14 Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
15 Maintenance, Repair, Product Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

4Gossen Metrawatt GmbH
1 Applications
The Energy Control System (ECS) allows for unambiguous cost center accounting.
Electrical as well as non-electrical energy and its consumption can be recorded,
optimized and billed to individual cost centers.
The U1601, U1602 and U1603 summators are at the heart of the Energy Control
System (ECS) and enable the recording and billing of both analog and digital quantities.
ECS operating software revision level: V2.57
The current operating instructions covering the latest firmware update are available for download
on the internet at www.gossenmetrawatt.com.
LONis a registered trade mark of the Echelon Corporation.
2 System Description
•Analog signals from orifice plates, measuring transducers or other measuring
instruments are acquired, analyzed and stored together with meter pulses from energy
meters, flow meters and heat meters at the intelligent U1601 summator.
• Each summator can be connected to up to 12 energy meters with pulse output. Data
collected at the meter inputs are integrated and stored according to various criteria to
a semiconductor memory with battery back-up.
•64 channels are available for the generation of sums and/or differences based upon
meter values. Values from other summators which are connected to the ECS LAN can
be used to generate virtual channels as well. All of the stored measurement values
can be displayed at the summator.
• Stored values can be read out from the U1601 summator with a PC, or can be remote
queried with the help of a modem. A radio-controlled clock for correct time
synchronization or a printer for the generation of reports can be connected to the
second RS232 interface.
• Several summators can be linked to one another via the ECS LAN, a multi-master
compatible RS485 field bus, for applications which required the use of more than 12
inputs (analog/binary). The linking of up to 255 summators from 16xx series
instruments via the ECS LAN allows for the establishment of a powerful energy control
system, which is controlled and monitored with a PC.
• All of the instruments connected to the bus can be queried and programmed from any
desired summator thanks to the multi-master system structure. A limit value violation at
summator M can thus trigger a signal at summator N. Each bus user has access to all
data and functions throughout the entire system.
•LON is a new type of intelligent bus concept with allows controllers, sensors and
actuators to communicate with one another. In addition, up to 63 nodes can be
connected to a U1601 summator via the integrated LON network.
• Two freely programmable relays allow for the generation of messages or the triggering
of specific actions if certain criteria have been fulfilled.
• User generated programs can be installed to the summators through the use of the
system-specific programming language,Energy Control Language (ECL). The
summators can thus be adapted to customer-specific calculations, analyses,
monitoring and optimization independent of the energy control system.
•ECSwin PC software for configuring parameters at the summators, and for reading in
energy consumption data and displaying them in tabular and graphic form.

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3 Instrument Description
3.1 Instrument Overview
3.2 Channels / Calculations
64 software channels are available. The input type for each channel can be selected for
the basic configuration with the CMODE channel parameter (0 ... 4).
Cyclical Generation of Channel Registers
Due to the fact that many various energy data registers are made available to each
channel (33 registers without maximum values: Etot, EtotT1, EtotT2, Pmom, 10+1 times
Eday, 12+1 times Emon, 4+1 times Eyear), only the most important summations are
performed continuously, and less important summations are performed in accordance
with a rotating schedule. For example, Etot is calculated continuously, whereby Emon-
12 is determined less frequently (approximately every 30 to 90 seconds). Power values,
except for Pmom, are continuously calculated based upon energy values, and thus
need not be summated.
PC/Modem
Printer/Clock
Inputs
E1 ... E12
analog / S0
Binary Outputs
S1 ... S4
S0 Standard
Aux. Power, Uv
for external meter
2
Relay Outputs
2
Analog Outputs
A1, A2 (= K13,14)
Status Relay
LON MeterLAN L LAN R
412
Relay 1, Relay 2
to Summator Port Input
LCD
Display
LEDs
Com-Server
64 Channels
OFF
En
LON
Channel Kn
Meter
S0
Analog Value
OFF
Energy
LON Calculation Energy
Calculation
Desired
Channel Power
2
0
3
4
1
Channels

6Gossen Metrawatt GmbH
Channel Names
A name can be assigned to each channel with a length of up to 8 characters. These
names allow for improved channel identification during data processing, as well as for
graphic representations. System-wide access to a given channel is also enabled through
the use of such names.
A system-wide search for a channel with the name “Motor5” is performed from
summator A, and total energy from this channel is graphically displayed (see also ECL
command: FINDER).
Channel Numbers
If inputs (E1 ... E12) are to be assigned to the channels, each input can only be assigned
to the channel which bears the same number, i.e.:
Virtual Channels
• Any unused channel can be utilized as a virtual channel for the generation of any
desired sums or differences which result from physical inputs or other virtual
channels. It makes no difference which summators within the ECS LAN the channels
have been assigned to!
• Unused physical channels can also be utilized as virtual channels, in which case even
the maximum value registers for the corresponding physical channel are made
available.
• The synchronizing-interval data logger can record data from virtual channels.
Differential Linking (ECL commands dVSUM and dVIRT)
As soon as they have been defined, incoming energy quantities (~ meter pulses) from
the source channels are continuously summed and the summed energy quantities are
fed to the virtual channel, “as if they had actually just been measured”. The virtual
channel is decoupled from the source channels and data can be manipulated as
desired.
Areas of application: logical coupling of input signals (as if the corresponding input
signals had been switched together to a single channel).
Example 1:
Channel 26 at summator D generates a cost center based upon channels 1 ... 5+8 from
summator B weighted with a factor of 0.7, and channel 4 from summator C weighted
with a factor of 0.3
Example 2:
Channel 10 is the difference between 1 ... 8 and total-sum channel 9
(sum of 1 ... 8 minus channel 9):
Inputs E / Outputs A Channels
E1 1
... ...
E12 12
A1 13
A2 14
...
64
<A> Etot Motor5
H1=’B:dVSUM 1..5+8 0.7, C:dVSUM 4 0.3, D:dVIRT 26=’

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Channel Parameters (chapter 6.4, page 33)
Numbers Range
In order to ensure greatest possible accuracy, all internal calculation operations are
performed with 64 bit floating decimal point numbers. This means that 15 (!) significant
decimal places are possible.
Switching the Channel Display On and Off
The On/Off function only determines whether or not a channel is visible while browsing
through channel data at the display, or during read-out with '*' (ECL command:
ONOFF). The function of the channel remains otherwise entirely unaffected.
Channel Start/Stop
The Start/Stop function is used to determine whether or not meter pulses are to be
accepted at a given input (ECL command: STARTSTOP).
• A virtual channel which has been generated by means of “differential linking” can be
influenced with the Start/Stop function in an analog fashion.
• Since the binary input status of a channel is not influenced, this function can be used,
for example, to avoid taking undesired binary data into consideration.
Energy Metering
Meter pulses filtered out in this fashion are integrated, per channel, into a temporary
meter. The meter values are converted into their corresponding energy values every 1 to
2 seconds, and are added to total energy registers. Pulses are converted to energy
values by means of the following formula:
Energy Calculation
where:
Power Calculation
Instantaneous power, PMOM, is determined based upon the interval between the
incoming pulses. All other power values are calculated from the corresponding energy
value, taking the corresponding time interval into consideration.
The calculation of power assumes the assignment of an energy unit of measure per hour
(kWh). The power factor must be adapted accordingly for other units of measure (e.g.
liters per minute) (ECL command: PFACTOR). The default value is 3600, and it would be
60 for the “liters per minute” example.
Formula for the calculation of power based upon energy E and duration dt:
P = E * Pfactor / dt
Only sensors which have been connected via the LON network are capable of
transmitting already calculated power and energy values to the summators.
H2=’dVSUM 1..8, dVSUM 9 -1, dVIRT 10=’
Energy kWh Pulses Imp
MeterCons t Imp
kWh
---------
tan
-------------------------------------------------- Uratio Iratio
 KFactor=
Iratio
Iprimary
Isecondary
-----------------------=
Uratio
Uprimary
Usecondary
------------------------=

8Gossen Metrawatt GmbH
3.3 Inputs E1 ... E12 and E1 ... E6 respectively (analog / binary)
Analog Inputs
For summator U1601 12 optically isolated analog inputs are available, E1 ... E12, for
summator U1603 6 optically isolated analog inputs are available, E1 ... E6. These can
be configured as voltage, current or binary inputs. See page 50 and page 33 for DIP
switch settings and appropriate software settings.
One metering channel, 1 ... 12, can be assigned to each of the inputs, E1 ... E12,
one metering channel, 1 ... 6, can be assigned to each of the inputs, E1 ... E6.
The applied analog input value may correspond to a measured power quantity.
The input ranges (20 mA, 5 mA, 10 V, S0) must be pre-selected with the DIP switches,
as well as the I/O RANGE parameter. Energy is matched to the various ranges, and
calculated and recorded as a channel quantity with the configurable ANAFAKTOR and
ANAOFFSET parameters.
Binary Meter Inputs
The 12 analog inputs, E1 ... E12, of
summator U1601, and the 6 analog inputs,
E1 ... E6, of summator U1603 respectively,
can also be used as binary inputs (in
accordance with the S0 standard).
Configuration is accomplished by means of
DIP switches and software (see page 50 and page 33).
A binary input recognizes two different levels, high level “1” and low level “0” (max. low
level adjustable with ECL command: LEVEL). Thus switching back and forth between
tariffs T1 and T2 can be performed with input 12. The synchronization pulse from the
electric utility can also be connected, for example, to input 11. Status can be queried via
software with the ECL command INPUT.
Debouncing Time and Trigger Edge
Debouncing time and the trigger edge can be configured individually for each of the
maximal 12 channels. Sampling time for all maximal 12 channels amounts to 5 ms.
• Debouncing time is adjustable from 10 ms to 2.55 s in 10 ms steps, ECL command:
PULSE
• High level trigger flank (1): Triggering occurs for change from low level to high level,
ECL command: EDGE
• Low level trigger edge (0): Triggering occurs for change from high level to low level.
If an input is used as a binary input, the selected debouncing time applies to this
operating mode as well. For example, if debouncing time has been set to 1 s, only those
signals are processed which remain stable at either high or low level for at least 1
second. Only debounced signals appear at the input status display at the control panel
as well.
3.4 Analog Outputs A1 and A2
Two configurable analog outputs can be driven with the ECL command ANA. The
output quantity (20 mA or 10 V range) must be selected with the DIP switches and the I/
O RANGE parameter (see page 50 and page 37).
Input channels can be recorded, scaled and read out continuously as transduced
quantities with the help of a background program (see also ECL command: ANA 13,
ANA14).
AD
EN

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3.5 S0 Outputs S1 through S4
Just like the relay outputs, four freely programmable S0 outputs allow for the forwarding
of messages when certain conditions have been fulfilled. Selectable voltage is limited to
50 V. Additionally, these outputs can be used as floating pulse outputs for the
transmission of meter readings to remote locations with the help of ECL background
programs (see ECL command: S0REL 1 ... 4).
3.6 Relay Outputs
Two freely programmable relays (changeover contacts) allow for the generation of a
message or the triggering of an action, if certain criteria have been fulfilled. For example,
a relay output can be activated if the mean power value within the synchronization
interval exceeds a certain value. The current relay status is displayed at the LCD under
summator status. A ?
indicates that the contact is closed and active. Please observe the
characteristic values in the appendix.
Relay Names
A channel name can be assigned to each of the relays and may have a length of up to 8
characters. This name allows for improved relay identification during data processing, as
well as for graphic representations. System-wide access to a given relay is also enabled
through the use of such names:
A system wide search for a relay with the name “Horn” is performed from summator A,
and this relay is activated (see also ECL command: FINDER).
3.7 Self Test
As long as the electronics are functional and no system error has been detected, the
status LED and the status relay are on. If the instrument electronics malfunction, the
relay is released and the LED goes out. A horn which can be driven with the status
relay’s break contact can be used to indicate a malfunction.
The current relay status is displayed in the status window (see chapter 5.8, page 26).
Functional testing can be expanded by means of appropriate programming (ECL
command: STATCHECK, see detailed information in online help: ? STATCHECK). For
example, the output can be deactivated (error condition) as soon as the 24 V power
supply drops to below 16 V, or if the condition of the lithium battery no longer allows for
reliable data storage.
3.8 RS232 Interface
Communications with a host computer (PC), a terminal, a modem or a printer is made
possible via the RS232 serial interface.
Access to All Measurement Data
A PC which has been connected to the RS232 interface has full access to all stored
system measurement values. ECSwin parameters configuring software, which runs on
the PC, manages all ECS data and allows for tabular data analysis.
Port Configuration
The RS232 port is configured in the DTE format (data terminal equipment), and signals
are conducted by a 9-pin D-SUB plug. The DTE configuration is compatible with
standard PC and terminal configurations. Wiring of the connector cable is described in
chapter 7.3, page 50.
<A> REL Horn=1

10 Gossen Metrawatt GmbH
3.9 ECS LAN
Several summators can be linked to one another via a multi-master compatible RS485
field bus (ECS LAN) for applications which require the use of more than 64 channels.
The connection can be established by means of a 2-wire cable using either bus or a line
topology. The maximum length per segment is1200 meters. Distances of several
kilometers between 2 summators can be accommodated with fiber optic transmission
and
4-wire technology.
A maximum of 255 summators can be connected to the ECS LAN. This means that a
maximum distance of approximately 300 km can be covered without additional
boosters.
Multi-Master System Architecture
The most significant advantage of the multi-master system architecture is the fact that
each of the bus users has full access to all of the data and functions encompassed by
the overall system. It is thus unnecessary to assign the designation of bus master a
single summator.
General Notes Concerning the ECS LAN
•Theconnector technology for the individual LAN segments can be freely selected and
combined.
• The longest cable length is determined by the transmission speed in accordance with
RS485. The ECS LAN normally runs at 62.5 KBaud, which corresponds to a
maximum cable length of 1.2 km, (see also chapter 6.7, page 39).
• The transmission cable must be terminated at both ends (and only at the ends) with
matching resistors. The matching resistors are integrated and can be switched on or off
at the control panel. Correct functioning of the 2-wire connection can only be secured
through the use of these integrated matching resistors. No external resistors may be
used!
•Theloop resistance of the transmission cable may not exceed 100 Ohms in 2-wire
operation.
•Upto16 summators can be connected to a single bus segment. If the matching
resistors have been correctly installed (see above), if spur line lengths have been
minimized and if the overall loop resistance of the transmission cable is less than 100
Ohms, up to 32 summators can be operated within a single segment.
•User statistics can be queried via the control panel (instrument status).

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ECS LAN, Sample Network

12 Gossen Metrawatt GmbH
Bus Left, Bus Right
Each summator is equipped with 2 complete ECS LAN interfaces. They are designated
as LAN L and LAN R. Each of these interfaces can be operated with
either 2-wire or 4-wire transmission technology (RS485).
2-Wire
A bus system, by means of which several summators are connected to the same bus
cable, must be laid out with 2-wire technology.
4-Wire
4-wire technology is used where unusually long transmission paths are involved, or
when boosters need to be integrated into the system. In such cases only line-to-line
connection is possible.
Cable Lengths (LAN Bus)
If several summators (up to 16) are to be installed in close proximity to one another
(overall maximum bus cable length of 100 m), a bus connection making use of a
twisted, two conductor cable is recommended. A line-to-line connection with a twisted
four conductor cable is not necessary until the distance between 2 summators is
greater than 400 m (max. 1200 m).
ECS-LAN Terminal Assignments
User Directory
Directory of ECS LAN Users
Each summator automatically generates an internal directory (ECL command: DIR) of all
users connected to the ECS LAN (assuming that unique identification has been
assigned throughout the entire system). Each summator acknowledges its presence to
ECS LAN, Sample Network
LANLLANR
+ EA + E + EA + E
45 46 47 48 49 50 51 52
U1601
LANLLANR
+ EA + E + EA + E
45 46 47 48 49 50 51 52
U1601
LANLLANR
+ EA + E + EA + E
45 46 47 48 49 50 51 52
U1601
LANLLANR
+ EA + E + EA + E
45 46 47 48 49 50 51 52
U1601
LANLLANR
+ EA + E + EA + E
45 46 47 48 49 50 51 52
U1601
LANLLANR
+ EA + E + EA + E
45 46 47 48 49 50 51 52
U1601
2-Wire Bus
2-Wire Line-to-Line
4-Wire Line-to-Line
2-Wire Line-to-Line
Suitable for fiber optic cable transmission
and RS485 boosters

Gossen Metrawatt GmbH 13
the entire system every 3 seconds with a so-called broadcast message, and all
receiving summators update their internal directories accordingly. If no message is
broadcast for a period of greater than 20 seconds, the summator in question is deleted
from the internal directories of the other summators.
Unique Identification
Each summator within the ECS LAN must be assigned its own unique summator
identification. Up to 255 different, freely selectable identifications can be created.
The following format is used: A, A1 .. A9, B, B1 .. B9, .. , Z, Z1 .. Z4
System-Wide Access to Measurement Data
Example: Total energy from channel 1 at summator D1 is to be queried from
summator A:
3.10 LAN LED (LANL/LANR)
One LED each for bus left and bus right indicates correct operation of the ECS LAN:
• If no ECS LAN users have been connected, the LED does not light up.
• If one or more users are connected to the corresponding bus segment, the LED lights
up.
• If two or more users have the same identification, the LAN LEDs which represent the
users with identical identification blink. Exception: If the summators with identical
identification are connected to the same LAN segment, no decisive error message
occurs. For this reason, the number of summators should always be compared with
the total number indicated in the user statistics (control panel, instrument status)
during instrument installation.
• If the internal matching resistor has not been switched on during bus operation, the
corresponding LAN LED blinks.
3.11 LON Connection
LON is a relatively new type of intelligent bus concept which allows control units,
sensors and actuators to communicate with one another. Rapid, cost-effective wiring is
achieved by means of intelligent decentralization. Each node (user) is equipped with a
neuron chip, and can communicate with all of the other nodes via the LON-Talk
protocol. Data transmission is accomplished with a standardized, twisted, potential-free
two conductor cable, which can be wired either in bus, ring or star configuration (freely
selectable topology!). The electrically isolating FTT10 transceiver used to this end is
protected against polarity reversal and transmits data at a speed of 78 kb per second.
Thus up to 63 additional nodes can be connected to a U1601 summator via the
integrated LON network. During the first phase of completion, bus users include LON
compatible bus meters, as well as input/output modules, gas or water meters etc. at
later stages.
Energy values from the LON meters can be freely assigned to channels K1 ... K64 by
means of differential linking.
3.12 LON LED
LON LED off All LON channels deactivated (page 33)
Blinking LON LED Error in communication with LON users
LON LED on LON bus OK
<A> D1:Etot 1

14 Gossen Metrawatt GmbH
4 Measurement Data
4.1 Overview of Available Measurement Data
The following measurement data are available for each meter input and virtual channel:
Energy Values (cumulative as of a defined starting point)
Energy Values (cumulative for defined time periods)
* Interval value depending upon memory depth
Maximum Values from Synchronization-Interval Measurement Data (with date and time)
Costs (cumulative as of a defined starting point)
Power Values (mean values for defined time periods)
Etot Total energy, independent of tariff
EtotT1 Total energy for tariff T1
EtotT2 Total energy for tariff T2
EtotT1+T2 Total energy for tariffs T1 plus T2
EInt EInt-1 ... EInt-xx Cumulative energy for the current,
and the last xx* intervals (data logger)
Eday Eday-1 ... Eday-10 Cumulative energy
for the current, and the last 10 days
Emon EMon-1 ... EMon-12 Cumulative energy
for the current, and the last 12 months
Eyear Eyear-1 ... Eyear-4 Cumulative energy
for the current, and the last 4 years
EMax EMax-1 ... EMax-xx The xx* highest values
EMaxDay EMaxDay-1 ... EMaxDay-10 Maximum energy value
for the current, and the last 10 days
EMaxMon EMaxMon-1 ... EMaxMon-12 Maximum energy value
for the current, and the last 12 months
EMaxYear EMaxYear-1 ... EMaxYear-4 Maximum energy value
for the current, and the last 4 years
CostT1 Costs for tariff T1
CostT2 Costs for tariff T2
CostT1+T2 Costs for tariffs T1 plus T2
Pmom Instantaneous power
between the last 2 meter pulses
PInt PInt-1 ... PInt-xx Power for the current,
and the last xx* intervals (data logger)
PDay PDay-1 ... PDay-10 Mean power value
for the current, and the last 10 days

Gossen Metrawatt GmbH 15
Maximum Values from Synchronization-Interval Measurement Data (with date and time)
Summary of Available Measurement Data per Channel
Relationship between Memory Duration and Number of Channels
for Synchronization-Interval Measurement Data (measurement data list, format: 0 3):
PMon PMon-1 ... PMon-12 Mean power value
for the current, and the last 12 months
Pyear Pyear-1 ... Pyear-4 Mean power value
for the current, and the last 4 years
PMax PMax-1 ... PMax-10 10 highest values from all meas. intervals
PMaxDay PMaxDay-1 PMaxDay-10 Maximum power value
for the current, and the last 10 days
PMaxMon PMaxMon-1 ... PMaxMon-12 Maximum power value
for the current, and the last 12 months
PMaxYear PMaxYear-1 ... PMaxYear-4 Maximum power value
for the current, and the last 4 years
Energy
Values Power Values Max. Energy Values
Max. Power
Values Costs
Etot Pmom
EtotT1 CostT1
EtotT2 CostT2
EtotT1T2 CostT1T2
Eint Pint Emax Pmax
Eday PDay EmaxDay PMaxDay
EMon PMon EmaxMon PmaxMon
Eyear Pyear EmaxYear PmaxYear
15 1
10 5 80 65 54 47 41
682
273
0
10 0
200
300
400
50 0
600
70 0
800
2 8 16 24 32 40 48 56 64
Number of Channels
Memory duration in days
with a 15 minute interval

16 Gossen Metrawatt GmbH
Memory Duration as a Function of Number of Channels I
4.2 Synchronizing-Interval Data Logger
The energy values which have been measured during a given interval can be stored to a
data logger. This interval (duration: 10 s .. 999 hr., default: 15 minutes) is either derived
from system time, or the interval limit is determined with a trigger pulse slope (default:
channel 11). Energy measured during this interval (EINT) is entered into a list along with
the time and the date. The mean power value occurring within the interval (PINT) is
calculated based upon EINT and the duration of the corresponding interval.
Formatting the Data Logger
Attention!
!
The contents of the data logger are deleted during formatting.
The number of records in the data logger depends upon the number of channels. Thus
the data logger can be formatted in accordance with the desired number of channels.
Formatting can only be performed with an interpreter. Data area resolution is also
defined simultaneously (ECL command: FORMAT).
Defining the Number of Records
The format command reserves adequate space for the selected number of channels in
system memory. The greatest possible number of records is thus determined, but not
memory duration which is solely dependent upon the duration of the interval.
Example: Only channels 1 ... 4, channel 17 and channels 21 .. 23 are to be recorded to
the data logger.
If the format command is called up without parameters, status information is read out to
the data logger. Most importantly, the number of records which can be entered to the
data logger is shown here.
<A> FORMAT = 1...4 + 17 + 21 ... 23
<A> format
Format(0): 8 channels, 26214 records (= 273 days, with a 15 min. interval)
Channels: 1;2;3;4;17;21;22;23
Number of Channels Number of Records Memory Duration in Days
with a 15 minute interval
2 65535 682
8 26214 273
16 14563 151
24 10082 105
32 7710 80
40 6241 65
48 5242 54
56 4519 47
64 3971 41
<A> FORMAT=1..4+17+21..23

Gossen Metrawatt GmbH 17
Reading Out the Data Logger
Data stored to the data logger can be read out together with time and date either
directly at the instrument’s control panel or via the serial interface with the ECL
command EINT. The following example shows a read-out of all measurement data for
channels 1 through 5 in ASCII format:
<A> Eint/## 1..5 * **
16.04.93;17:45:00;1;0.5;0.75;0.99;1.36
16.04.93;18:00:00;1.01;0.1;0.76;0.80;0.83
16.04.93;18:15:00;0.99;0.48;0.75;1.02;1.28
Querying a Specific Record
Data for a specific date can be read out with the ECL command INDEX. The example
below shows the value from the data logger for channel 1 on 16 April 1993 at 6:15 p.m.
(in clear text):
<A> Index 16.04.93 18h15, Eint/ 1 .
16.04.93 18:15:00 : Eint-863 (01:Motor7) = 0.99 kWh
Data Logger Memory Structure
The data logger is a ring buffer of fixed size which is formatted accordingly. Access is
made with an index number. Index 0 always refers to the current interval, index 1 to the
last interval and index 2 to the interval before the last etc. The ECL command INDEX
transforms a time entry into the corresponding index number.
Ring Buffer
When memory capacity has been used up, the oldest record (the record with the
highest index number) is deleted to make room for the newest record. The interval which
has just been completed is thus assigned index number 1, and the index numbers for all
previous records is increased by 1.
Range of Values for the Data Logger
Limitation of Resolution to Reduce Data Volume
All data registers at the summator are internally 8 bytes wide (64 bit floating point).
However, where the data list is concerned (as of Eint-1), for which overall memory
duration is directly dependent upon available memory capacity, a format with a width of
2 bytes must be used (which results in a loss of accuracy). Since only energy values are
stored to memory (and no power values since these are calculated), standard “0”
formatting results in the following limitation of the range for values:
Range of Values Resolution
–0.8191 ... 0 ... +0.8191 Resolution: 0.0001
–81.91 ... -0.82, +0.82 ... +81.91 Resolution: 0.01
–8191 ... -82, +82 ... +8191 Resolution: 1.0
–819100 ... -8200, +8200 ... +819100 Resolution: 100
...

18 Gossen Metrawatt GmbH
5Operation(menu displays)
The U1602 micro-summator and the U1603 mini-summator are not equipped with any
display or operating elements. Communications and parameters configuring are
accomplished with ECSwin software. The display which appears in the control panel
mode is identical to the operating menus provided with the U1601 summator.
Extreme caution must be exercised when changing the parameters for the COM1 and
COM2 serial ports.
If the settings are changed, no communication takes place between the PC and the
summator. Only one port should be changed at any given time, so that the summator
can still be controlled with the other. COM2 must be set to ECL or ECL+HP.
5.1 Menu: Overview (main menu display)
The following applies in general to the sub-menu displays:
Use the keys to advance 1 channel and the keys to advance 10
channels.
TOT. ENERGY
INTERVAL
ENERGY
ANALOG
IN/OUTPUTS
STATUS DISPLAYS
Menu
OVERVIEW
SETUP:
press
>1s
F1
F2
F3
F4
F5
Displays total
costs (menu 1)
Displays interval
energy (menu 2)
Displays analog
inputs and outputs
(menu 4)
Status display
(menu 5)
Displays interval
energy max. values
Main Menu Display Menu Displays 1 ... 5
(menu 3)
APPLICATIONS
Select and start
programs
From Channel
▲
▼
Display
ESC
energy, power,
▲▼
F1 F5

Gossen Metrawatt GmbH 19
5.2 Menu 1: Display Total Energy, Power and Costs
• Multi-Channel Display (all channels with only 1 measurement value)
• Single Channel Display (1 channel with all measurement values)
K64:
Etot
Pmom
ZW
K02:
Etot
Pmom
ZW
Menu 1
TOTAL
ENERGY
Etot
P-Momentary
E (Tariff1)
E (Tariff2)
E (Tariff T1+T2)
EtotT1
EtotT2
EtotT1T2
Pmom
F1
F2
F3
F4
F5
K01: Cost T2
K02: Cost T2
...
K64: Cost T2
...
K01: Cost T1
K02: Cost T1
...
K64: Cost T1
...
K01: Cost T1+T2
K02: Cost T1
...
K64: Cost
...
K01: EtotT2
K02:
...
K64:
K01: EtotT1
K02:
...
K64:
K01: Etot
K02: Etot
...
K64: Etot
...
K01: Etot T1+T2
K02:
...
K64:
K01:
Etot
Pmom
ZW
F1
F3
F5
F4
K01: Pmom
K02:
...
K64:
F1
F5 EInt, PInt, E /Day/Mon/Year
▲▼
▲▼
Multi-Channel Display Single Channel Display
Emax, Pmax /Day/Mon/Year
K64:
K02:
K01:
EtotT2,Cost(T2)
EtotT1T2,
EtotT1,Cost(T1)
ESC
To M a i n M enu
Channel Selection
Cost(T1+T2)
▲
▼
Menu Advance
Pmom
01 80.7
Motor-01
Name
02
03
04
05
06
07
08
09
10
Area-16
Cooler1
Z1422152
Sun 9-20
Room 25
Room 27
Hall 33
House 31
Hall 22
22.2
3456788.2
3422654.1
24.6
180.3
21365.9
234546.3
21.7
2356.4
K#
F1: F4: P
F3:
F2: d
Pmom
01 80.7
Motor-01
Name
02
03
04
05
06
07
08
09
10
Area-16
Cooler1
Z1422152
Sun 9-20
Room 25
Room 27
Hall 33
Room 31
Hall 22
22.2
3456788.2
3422654.1
24.6
180.3
21365.9
234546.3
21.7
2356.4
K#
F1: F4: P
F3:
F2: d
Pmom
01 80.7
Motor-01
Name
02
03
04
05
06
07
08
09
10
Area-16
Cooler1
Z1422152
Sun 9-20
Room 25
Room 27
Hall 33
House 31
Hall 22
22.2
3456788.2
3422654.1
24.6
180.3
21365.9
234546.3
21.7
2356.4
K#
F1: F4: P
F3:
F2: d
01 80.7
Motor-01
Name
02
03
04
05
06
07
08
09
10
Area-16
Cooler1
Z1422152
Sun 9-20
Room 25
Room 27
Hall 33
House 31
Hall 22
22.2
3456788.2
3422654.1
24.6
180.3
21365.9
234546.3
21.7
2356.4
K#
F1: F4: P
F3:
F2:
Etot
01 80.7321
02
03
04
05
06
07
08
09
10
22.2475
3456788.2458
3422654.1698
24.6587
180.3470
21365.9487
234546.3414
21.7774
2356.4444
K#
kWh
kVarh
Wh
Wh
MWh
MWh
kWh
kWh
kWh
kWh
Etot
F5: F1: F4: P
F3:
F2: F5:
01 23.12.08 10:27:00
02
03
04
05
06
07
08
09
10
23.12.08 10:28:10
23.12.08 10:16:33
23.12.08 11:45:00
23.12.08 10:27:00
23.12.08 10:27:00
23.12.08 10:27:00
23.12.08 10:27:00
23.12.08 10:27:00
23.12.08 10:27:00
K# Etot
F1: F4: P
F3:
F2: F5:
Time from
F2 F4
Channel selection same as above
AsynchronMotorNo.1
F1: F3:
Motor01
Etot
80.7321
Pmom 10.7221 kW
ZW 102376.84 kWh
01
Channel 01
Pmom
ZW
Etot
EtotT2, CostT2
EtotT1T2, CostT1+T2
EtotT1, CostT1
EInt, PInt, E /Day/Mon/Year
Emax, Pmax /Day/Mon/Year
Additional Meas. Values
F5:
kWh
LON
Channel 01 Long Name
Channel Mode

20 Gossen Metrawatt GmbH
5.3 Menu 2: Display Interval Energy
• Multi-Channel Display
• Single Channel Display
K64:
K01:
EInt-....
Menu 2
INTERVAL
ENERGY
EINT
E (Day)
Eday
E (Month)
EMon
E (Year)
Eyear K01: PMon
K02: Cost T2
...
K64: Cost T2
...
K01: Pday
K02: Cost T1
...
K64: Cost T1
...
K01: Pyear
K02: Ko
...
K64: Kos
...
K01: EMon- ...
K02:
...
K64:
K01: Eday- ...
K02:
...
K64:
K01: PInt
K02: Etot
...
K64: Etot
...
K01: Eyear- ...
K02:
...
K64:
K01: EInt- ...
K02:
...
K64:
F1
F2
F3
F4
F5
K02:
K64:
K02:
K64:
K02:
K64:
K02:
K01:
Eday-....
K01:
K01:
EMon-...
Eyear-...
Multi-Channel Display Single Channel Display
MAXIMA ...
F3
F4
ESC
To M a i n M enu
Channel Selection
Emax, Pmax /Day/Mon/Year
Etot /T1/T2/T1T2
▲
▼
Menu Advance
F1
F5
▲▼
Channel Selection
Jump to
Menu 3
PInt-xxxx
01 Motor-01
Name
02
03
04
05
06
07
08
09
10
Area-16
Cooler1
Z1422152
Sun 9-20
Room 25
Room 27
Hall 33
House 31
Hall 22
K#
F1: F4: P
F3:
F2: d
01 80.7
Motor-01
Name
02
03
04
05
06
07
Area-16
Cooler
Z1422152
Sun 9-20
Room 25
Area 27
22.2
3456788.2
3422654.1
24.6
180.3
21365.9
K# EInt-xxxx 01 80.7
Motor-01
PInt-xxxx
02
03
04
05
06
07
08
09
10
Area-16
Cooler1
Z1422152
Sun 9-20
Room 25
Room 27
Hall 33
House 31
Hall 22
22.2
3456788.2
3422654.1
24.6
180.3
21365.9
234546.3
21.7
2356.4
K#
F1: F4: P
F3:
F2: d
01 80.7321
02
03
04
05
06
07
22.2475
3456788.2458
3422654.1698
24.6587
180.3470
21365.9487
K#
kWh
kVarh
Wh
Wh
MWh
MWh
kWh
EInt-xxxx
Advance
Page
F4
F2
13.02.1523.10.08
➟12.57.1003.11.08
➟
F1: F4: P
F3:
F2: F5: F1: F4: P
F3:
F2: F5:
13.02.1523.10.08
➟12.57.1003.11.08
➟
xxxx:
Interval Selection
▲
▼
F1
F5
▲▼
Channel Selection
AsynchronMotorNo.1
F1: F3:
Motor01
EInt-xxxx
80.7321
PInt-xxxx
10.7221 kW
01
Channel 01
PInt
EInt
Additional Meas. Values
F5:
kWh
LON
Channel 01 Long Name
13.02.1523.10.08
➟12.57.1003.11.08
➟
E, P /Day/Mon/Year
Emax, Pmax /Day/Mon/Year
Etot, Pmom, ZW /T1/T2/T1T2
Channel Mode
Eint, Pint
xxxx:
▲
▼
Selectable Interval
ESC
Set index to 0.