Appendix Title
12
For more information on AT commands and sending serial strings using our
data loggers, consult Section 2 of your Communications training manual.
9.
Data Logger Connection
Different models of Campbell Scientific data loggers have a CS I/O port and/or
RS232 communication port(s). The Intelimax can be connected to either port.
However, the hardware configuration for connection to each port differs.
Therefore, there are different kits available. Each kit includes all the necessary
equipment required to connect the modem to a Campbell Scientific data logger,
on the appropriate communication port.
In addition to the two 9-pin ports, a kit is available to connect a modem to a
pair of control ports acting as a 3-wire RS-232 connection.
9.1
RS-232 vs CS I/O
Campbell Scientific CR800, CR1000, CR3000 and CR5000 data loggers all
have two serial 9-pin ports on them – RS232, a well established serial interface
which can be found on some laptops and CS I/O, which is a proprietary
Campbell Scientific serial interface which pre-dates RS-232.
RS-232 can be used to communicate with radios, modems, PCs and other
devices while CS I/O can be used to communicate with and power Campbell
Scientific devices such as radios, multi-drop interfaces, Wifi interfaces and
more.
In addition to the 9-pin RS-232 port available on our loggers, RS-232 capable
loggers can also configure a pair of control ports for use as a 3-wire RS-232
connection.
CS I/O is NOT compatible with RS-232! RS-232 devices will
not work properly on a CS I/O port due to different pin
configurations and voltage levels. To connect an RS-232
device (such as a modem) to the CS I/O port, an adaptor
such as an SC932A will be necessary. DCP-INTELIMAX-
CSIO kits are supplied with all necessary interfaces and
cables.
Warning