Operating Instructions
Programmable multi-transducer EURAX DME 440
Contents
1. Read first and then... ................................................. 30
8. Maintenance ..............................................................41
10. Safety notes ...............................................................42
1. Read first and then ...
The proper and safe operation of the device
assumes that the Operating Instructions are
read and the safety warnings given in the
4. Electrical connections
6. Commissioning
10. Safety notes
are observed.
The device should only be handled by appropriately
trained personal who are familiar with it and authorized
to work in electrical installations.
2. Scope of supply (Figs. 1 to 4)
Fig. 1
Betriebsanleitung
Programmierbarer Multi-Messumformer
EURAX DME 440
Mode d'emploi
Convertisseur de mesure multiple
programmable EURAX DME 440
Operating Instructions
Programmable multi-transducer
EURAX DME 440
DME 440-2 B d-f-e
127 193
05.99
Aargauerstrasse 7
CH-5610 Wohlen/Switzerland
Telefon +41 56 618 21 11
Telefax +41 56 618 24 58
Camille Bauer AG
Telex 827 901 cbm ch
Fig. 2
30
22d+ 22z-
18d+18z-
A
B
14d+ 14z-
10d+10z-
C
D
3
RS485
1:
6d
2d
Tx+/Rx+
GND
2:
6z
2z
MODBUS
Tx-/Rx-
000
3:
4:
Fig. 3
Definition MODBUS
® ® ® ®
-Schnittstelle
DME401 / 440
Camille Bauer AG
Jede unerlaubte Verwendung dieses
CH-5610 Wohlen
Dokumentes wird gerichtlich verfolgt
Technische Änderungen vorbehalten !!
Inhaltsverzeichnis
1.
Einführung
2.
Anschliessen der Geräte an den Bus
3.
Realisation der Schnittstelle
3.1
Konfiguration der Schnittstelle
3.2
Prinzip der Übertragung
3.3
Allgemeine Form der Telegramme
3.4
Berechnung des Prüfwortes (CRC16)
3.5
Spezielle Datentypen
4.
Auslesen von Messwerten
4.1
Messgrössen
4.2
Messwerttabellen
4.3
Optimierte Datenübertragung
4.4
Beispiele für die Messwerterfassung
4.5
Alternative Messwertverarbeitung in MODBUS-Tools
5.
Aktuelle Zählerstände
6.
Rücksetzen von Schleppzeigern
7.
Konfiguration des Messumformers
8.
Fehlermeldungen
Änderung Datum Vis.:
Type:
DME401 / 440
Nr.:
1/36
gez.:
15.02.99 RR
® ® ® ®
2001-039
22.11.01 RR
Bezeichnung:
Definition MODBUS
-Schnittstelle
134 081 d/e
Zeichnr.:
Fig. 4
Transducer (Fig. 1)
1 Operating Instructions (Fig. 2) in three languages: German,
French, English
1 blank type label (Fig. 3), for recording programmed set-
tings
1 Interface definition DME 440 (Fig. 4): German, French or
English
3. Brief description
EURAX DME 440 is a programmable transducer with a
RS 485 bus interface (MODBUS
variables of an electrical power system simultaneously and
generates 4 proportional analogue output signals.
The RS 485 interface enables the user to determine the
number of variables to be supervised (up to the maximum
available). The levels of all internal energy meters that have
been configured (max. 4) can also viewed. Provision is made
for programming the EURAX DME 440 via the bus. A standard
EIA 485 interface can be used.
The transducers are also equipped with an RS 232 serial
interface to which a PC with the corresponding software can
be connected for programming or accessing and executing
useful ancillary functions. This interface is needed for bus
operation to configure the device address, the Baud rate and
possibly increasing the telegram waiting time (if the master
is too slow) defined in the MODBUS
The usual methode of connection, the types of measured
variables, their ratings, the transfer characteristic for each
output and the type of internal energy meter are the main
parameters that can be programmed.
The ancillary functions include a power system check, pro-
vision for displaying the measured variable on a PC monitor,
the simulation of the outputs for test purposes and a facility
for printing nameplates.
4. Electrical connections
The transducer EURAX DME 440 is inserted in a 19˝ rack.
The following instructions enable the connections to be made
to the rack without error ...
... when directly connected (to the socket in the
rack)
or
... when connecting to terminals on the rack (screw
terminals, rack connector, multiplug etc.) after com-
pletion of unit allocation and wiring diagrams.
). It supervises several
®
protocol.
®