Campbell CR1000 User Manual

Section 7. Installation
Figure 71. HyperTerminal Text-Capture File Example
Engage text capture by clicking on Transfer | Capture Text | Browse, select the
file, and then click OK.
7.9.17.6.4 Serial I/O Example II
CRBasic example Measure Sensors / Send RS-232 Data (p. 259) illustrates a use of
CR1000 serial I/O features.
Example — An energy company has a large network of older CR510 dataloggers
into which new CR1000 dataloggers are to be incorporated. The CR510
dataloggers are programmed to output data in the legacy Campbell Scientific
Printable ASCII format, which satisfies requirements of the customer's data-
acquisition network. The network administrator prefers to synchronize the CR510
clocks from a central computer using the legacy Campbell Scientific C command.
The CR510 datalogger is hard-coded to output printable ASCII and recognize the
C command. CR1000 dataloggers, however, require custom programming to
output and accept these same ASCII strings. A similar program can be used to
emulate CR10X and CR23X dataloggers.
Solution — CRBasic example Measure Sensors / Send RS-232 Data
(p. 259) imports
and exports serial data with the CR1000 RS-232 port. Imported data are expected
to have the form of the legacy Campbell Scientific time set C command. Exported
data has the form of the legacy Campbell Scientific Printable ASCII format.
Note The nine-pin RS-232 port can be used to download the CR1000 program if
the SerialOpen() baud rate matches that of the datalogger support software (p. 654).
However, two-way PakBus
®
communications will cause the CR1000 to
occasionally send unsolicited PakBus
®
packets out the RS-232 port for at least 40
seconds after the last PakBus
®
communication. This will produce some "noise" on
the intended data-output signal.
Monitor the CR1000 RS-232 port with HyperTerminal as described in the section
Configure HyperTerminal
(p. 256). Send C-command file to set the clock according
to the text in the file.
Note The HyperTerminal file will not update automatically with actual time. The
file only simulates a clock source for the purposes of this example.
259

Campbell CR1000 Specifications

General

Power Requirements	9.6 to 16 VDC
Data Logger Operating System	CRBasic
Memory	4 MB
Analog Inputs	16 single-ended or 8 differential
Analog Input Resolution	13 bits
Analog Input Range	+/-2.5V
Digital I/O	8
Pulse Counters	2
Communication Ports	RS-232
Operating Temperature	-25°C to +50°C
Pulse Channels	4