Campbell Scientific CR23X Micrologger - Manual (Page 21)

CR23X MICROLOGGER OVERVIEW
OV-11
OV3. COMMUNICATING WITH CR23X
The user can communicate with the CR23X
through either the integral keyboard and two line
LCD display, or through a telecommunications link
with a terminal or computer. The preferred method
for routine operation is through a
telecommunications link with a personal computer
running Campbell Scientific’s PC208 or PC208W
Datalogger Support Software. These packages
contain a program editor (EDLOG), datalogger
communications, automated telecommunications
data retrieval, a data reduction program (SPLIT),
and programs to retrieve data from Campbell
Scientific Storage Modules.
Some situations, however, require an alternate
communications method. The integral
keyboard is convenient for cursory on-site
inspection of datalogger functions. It can also
be used when becoming familiar with the
dataloggers functional modes as outlined in
Sections OV3.1 through OV5 and Section 1.
A third communications alternative is through a
dumb terminal or a computer terminal emulator
program through a telecommunications link.
Several arcane commands are used in this
mode as outlined in Section 5. The most useful
command to most CR23X users is the 7H
command, which places the CR23X in the
Remote Keyboard Mode. This mode uses the
same commands as when communicating on-
site through the integral keyboard and display.
A common way to use this mode is to enter it
through the terminal emulator program in
PC208 or PC208W. Once the
telecommunications link is established, CR-LF
(carriage return - line feed) is issued from the
PC by hitting the key several times
while in the terminal emulator. The CR23X will
respond by sending an asterisk (*) to the PC
screen. At the *, 7H followed by a CR-LF is
issued. The CR23X will respond with a greater-
than symbol (>). From the >, the functional
modes can be entered as outlined in Section 1.
OV3.1 CR23X KEYPAD/DISPLAY
On power-up, the "HELLO" message is
displayed while the CR23X checks memory.
The total size of memory is then displayed
(1664 K bytes of memory).
Using the keypad, work through the direct
programming examples in this overview in
addition to using EDLOG and you will have the
basics of CR23X operation as well as an
appreciation for the help provided by the
software and the CR23X on-line help.
The display will turn off automatically if not
continuously updated. The display will stay on if
continuously updated such as occurs in the
∗ 5
and ∗ 6 modes. Otherwise, it will turn off
automatically to save 4 mA of power. Time to
display shut off is 3 minutes if left in the
∗ 0
mode, or 6 minutes if left in other modes not
continuously updating the screen. While in the
∗ 0 mode, the screen can be manually turned
off by pressing the # . Press any other key to
turn it back on.
OV3.1.1 FUNCTIONAL MODES
CR23X/User interaction is broken into different
functional MODES (e.g., programming the
measurements and output, setting time,
manually initiating a block data transfer to
Storage Module, etc.). The modes are referred
to as Star (
) Modes since they are
accessed by first keying , then the mode
number or letter. Table OV3.1-1 lists the
CR23X Modes.
Because the display uses approximately 4 mA
when active, it is automatically turned off if not
updated for three minutes, except in the
∗ 6
mode, where it is left on indefinitely. The
display can be turned off from the keypad in the
∗ 0 mode by pressing #. Pressing any key
except the # key will cause the display to be
turned back on after it has been turned off.
TABLE OV3.1-1. Mode Summary
Key Mode
∗ 0 Compile program, log data and
indicate active Tables
∗ 1 Program Table 1
∗ 2 Program Table 2
∗ 3 Program Table 3, subroutines only
∗ 4 Parameter Entry Table
∗ 5 Display/set real time clock
∗ 6 Display/alter Input Storage data,
toggle flags or control ports.
∗ 7 Display Final Storage data
∗ 8 Final Storage data transfer to peripheral
∗ 9 Storage Module commands
∗ A Memory allocation/reset
∗ B Signature/status
∗ C Security
∗ D Save/load program, set display
contrast, power up settings, ID, etc.
∗ # Used with TGT1 satellite transmitter