SC105 CS I/O to RS-232 Interface
RS-232 Baud Rates:
The SC105 will support the following baud
rates: 1200, 9600, 19200, 38400, 57600, and
115200
RS-232 Parity and Data
The SC105 supports the following:
Parity:
Even, Odd, None
Data Bits:
7,
8
CS I/O Port Modes:
CSDC, SDC, ME,
Addressed Print Device
for
P96 output
Electrical:
The SC105 uses power from the +5 V line on
the 9-pin interface connected to the datalogger
Current
Standby:
0.16
mA
Communicating:
1 to 4 mA
Additional current (up to 8 mA) from the 5 V
supply may be used by the RS-232 device
connected to the SC105
Physical
Height:
2.3 cm (0.9 in)
Width:
4.1 cm (1.6 in)
Length:
8.9 cm (3.5 in)
Weight:
45.4 g (1.6 oz)
Environmental
Temperature:
–25° to +50°C
Humidity:
up to 95% non-condensing
3. Set-up Menu
The SC105 has a built-in set-up menu for configuring communication mode,
CS I/O port configuration, RS-232 port configuration, and other parameters.
The Set-up Menu is shown in FIGURE 3-1. It is accessed by connecting the
SC105’s RS-232 port to a PC with the included null modem cable. The SC105
also needs to have power. Usually, the SC105 is powered by connecting the
SC105’s CS I/O port to the CS I/O port of a datalogger.
With the null modem connection to the PC, typically Campbell Scientific’s
Device Configuration Utility
(
DevConfig
) is used, but a terminal program such
as
HyperTerminal
TM
or
Procomm
TM
(always 9600 baud, 8-N-1) can also be
used. Press the
Program
button on the SC105 for one second to access the
Set-up Menu. Changed settings are saved in flash memory by selecting
Apply
in DevConfig or menu item
4
if using HyperTerminal or Procomm. If left idle,
the Set-up Menu will time out 60 seconds after the last received character and
exit without saving any parameter changes with the message “Set-up Timeout.”
A datalogger can remain connected to the CS I/O port (to provide power to
SC105) while setting SC105 parameters on the RS-232 port, although CS I/O
communications would be inactive until exiting the Set-up Menu.
3
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