User`s guide

Call-Back Configuration for the CR800/CR1000 – MultiLogger Application Note #19 – Page 3 of 12
Modem Call-Back
There are 3 different Modem call-back options supported in MultiLogger:
• COM220 Modem Call-Back – A Campbell COM220 with default settings, connected to CSI I/O
port.
• CSI I/O Modem Call-Back – A generic modem connected (with appropriate RS-232 interface
such as the SC32B or SC932) connected to the CSI I/O port.
• RS-232 Modem Call-Back – A generic modem connected to the RS-232 port.
Other devices and configurations may be supported for call-back, contact Canary Systems for assistance
with your application.
A schematic depiction is shown below for the COM220 Modem Call-Back option utilizing the Campbell
COM220. The architecture is similar for other modems.
The diagram illustrates a datalogger connected to a COM220 (using the CSI I/O port) connected to local
POTS, then a computer with phone modem and similar POTS connection. The computer is running
MultiLogger to accept the call-back events through the installed phone modem. Data are collected by
MultiLogger and optionally imported into the MultiLoggerDB database where alarm actions or other
notification can be initiated.
There are 3 steps to the MultiLogger configuration. The first requires configuration of the Alarm Action to
allow the CR800 or CR1000 to initiate call-back events.
Select the Program tab of
the Logger form to access
the Alarm Action drop-
down. Select the
appropriate option, in this
case COM220 Modem
Call-Back.
Note: These options
were included beginning
with MultiLogger version
4.3.4. Upgrades to the
current version are
available from the
Support area of our
website.