Volume Conversion Device EK260
72 Elster GmbH
Md.S2 Mode, Interface 2
This value informs the EK260 which device is connected to the internal
(permanently wired) interface and how it is to be controlled.
All the modes which can be set are described here. You can quickly find the
setting suitable for your application in Chapter 4.7.
Md.S2 =
1 "With control line"
Modem control RS-232 control
lines
Battery operation
Baud rate
selection
No Yes Yes Yes
Suitable for the connection of a FE230. The modem inside of the FE230 is
programmed for automatic call acceptance. It is possible to set Md.S2=17 for
several minutes when the call acceptance window is open, during the
installation of the FE230. Then the GSM-level can be checked by pressing
the ENTER-button on the display of value GSM.P. No short messages (SMS)
can be sent via the FE230. Wiring diagram à page 108.
2 "Modem" (no GSM modem)
Modem control RS-232 control
lines
Battery operation
Baud rate
selection
Yes Yes Yes No
Suitable for the connection of a commercially available modem.
For GSM modems Mode 2 can also be used, but Mode 7 is more suitable
(see below), because then monitoring of the link to the GSM network also
occurs.
Num.T (see below) is effective.
3 "Modem with responses"
Modem control RS-232 control
lines
Battery operation
Baud rate
selection
Yes No No No
The EK260 controls the modem over the data lines via "responses". The
activation of the responses occurs with the modem command "ATQ0V1".
Particularly suitable for the connection of an FE260 Function Expansion with
modem.
Num.T (see below) is effective.
5 "Without control lines"
Modem control RS-232 control
lines
Battery operation
Baud rate
selection
No No No Yes
The baud-rate selection can be bypassed in this mode in that the values
under the addresses 02:708 (Bd.S2) and 02:709 are set to the same value.
The ex-works setting is 02:708 = 02:709 = 19200 Bd.
Suitable for the connection of the following devices:
- Modem with automatic call acceptance, e.g. in or on an FE260.
- Another device (not a modem) with RS232 or RS485 interface for data
interrogation connected to an FE260.
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