Elster EK220, Operating Instructions And Installation Information

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Volume Conversion Device EK220
72 © Elster GmbH
Md.S2 =
3 " Modem with return messages"
Modem
control
RS232
control lines
Battery
operation
Baud rate se-
lection
yes no no no
Suitable for the connection of an FE260 Function Expansion, an industrial
modem EM260
1
or a modem and an external power supply.
The EK220 controls the modem via the data lines using "return messages".
The activation of the return messages occurs with the modem command
"ATQ0V1".
Num.T (see below) is activated.
5 "Without control lines"
Modem
control
RS232
control lines
Battery
operation
Baud rate se-
lection
yes no yes yes
The baud rate selection can be bypassed in this mode by setting the values
under the addresses 02:708 (Bd.S2) and 02:709 to the same value. Ex -
works the setting is: 02:708 = 02:709 = 19200 Bd. For this mode the EK220
needs an external power supply.
6 "Modem with return messages, battery mode"
Modem
control
RS232
control lines
Battery
operation
Baud rate se-
lection
yes no yes no
In the mode Md.S2 = 6 the EK220 handles, as with Md.S2 = 3 (see above),
the control of the modem via the data lines using "return messages". The
modem is not parameterised for automatic call acceptance. Num.T (see be-
low) is activated.
7 "GSM modem"
Modem
control
RS-232
control lines
Battery
operation
Baud rate se-
lection
yes yes yes no
Suitable for the connection of a commercially available GSM modem.
This mode largely corresponds to Mode 2 (see above), but checks the
EK220 daily shortly after midnight for whether the modem is still ("logged
in") with the GSM network and, if required, establishes the connection.
Num.T (see below) is effective.
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Delivery from mid of 2008!