Campbell CR23X, Operator'S Manual

Page: 48 / 374

SECTION 1. FUNCTIONAL MODES
1-14
1.8.4 FULL/HALF DUPLEX
The
D
Mode can also be used to set
communications to full or half duplex. The default
is full duplex, which works best in most situations.
TABLE 1.8-7. Setting Duplex
Key entry Display
D
13: Enter Command
00
9
A 09: Comm Duplex
0x
If x=0 the CR23X is set for full duplex.
If x=1 the CR23X is set for half duplex.
You may now change the option:
0
A Set full duplex
1 A Set half duplex
1.8.5 SETTING POWERUP OPTIONS
Setting options for the Program on Powerup
allows the user to specify what information to
retain from when the datalogger was last on.
This allows Flag/Port status, the User Timer,
and the Input/Intermediate Storage to be
cleared or not cleared.
Table 1.8-8. Setting Powerup Options
Key entry Display
D 13: Enter Command
00
1 0
A
10: Power Up Option
0X
Where X is the powerup option currently
selected. You may now change the option:
0 A Clears input locations, ports, flags,
user timer, and intermediate storage
locations.
1
A
Clears intermediate storage only
(leaves Input Storage, Flags/Ports, and
User Timer as is).
2
A
Doesn’t clear anything.
1.8.6 SETTING DISPLAY CONTRAST
The CR23X automatically adjusts the LCD
display contrast for temperature within two
seconds after power-up. If necessary, the user
can fine tune the default contrast in the
D
mode. The user entered adjustment is valid
only for the specific temperature range wherein
the adjustment was made. If the CR23X
temperature moves out of that range, the
default setting for the next range controls the
contrast. See “Telecommunications” R
command information on changing default
settings in each temperature range.
TABLE 1.8-9.
Key
Entry
Display Comments
D
13: Enter Command
00
1 1
A
11: Program Stopped
11: Dsply Contrast
xxxx xxxx is the
current setting.
Key in new
setting followed
by an A or . . .
A
11: D Dark C Light
xxxx Press A to
darken, B to
lighten
0
LOG Save setting,
restart program
1.8.7 SET INITIAL BAUD / SET RS232 POWER
Table 1.8-11 shows the option codes available
for setting the initial baud rate. Setting the initial
baud rate forces the CR23X to try the selected
baud rate first when connecting with a device.
By indexing the option, the “Computer RS232”
port can be powered up. Power up of the
RS232 port puts 9 volts on pins 1 (DTR) and 8
(RTS), and 8 volts on pin 2 (TX).