Kipp&Zonen COMBILOG Data Logger - Manual (Page 144)

11.11 Modem Connection
In case of using a telephone or GSM modem with the
COMBILOG the modem must at first be initialized by means of
a terminal program. Set the interface settings of the terminal
program to 19200 bps, no parity, and enter the following AT
commands. Refer to your modem manual for a detailed de-
scription of the commands, because some commands may dif-
fer depending on the modem type.
Load default settings AT&F
Set baud rate to 19200 bps device dependent
Set auto answer on *
ATS0=1
Set DSR on AT&C0
Ignore DTR AT&D0
Save configuration AT&W0
* In case the modem is connected to the RS232 port of the
COMBILOG, the data logger will response the incoming call
after 4 rings automatically. Note, that the ring will not be recog-
nised at the RS485 port.
Set the RS232 interface of the COMBILOG to 19200 bps, no par-
ity.
Prepare a cable between modem and COMBILOG as shown:
COMBILOG 1022 MODEM
25-pin 9-pin
TX 2 3 RxD
RX 3 2 TxD
GND 7 5 GND
4 7 RTS
5 8 CTS
6 6 DSR
20 4 DTR
Hardware Manual COMBILOG 1022 144