Campbell CR1000 User Manual

Appendix A. CRBasic Programming Instructions
WriteIO
Set the status of C terminals.
Syntax
WriteIO(Mask, Source)
A.5.7.2 Measurement
PWM
Performs pulse-width modulation on a C terminal.
Syntax
PWM(Source, Terminal, Period, Units)
TimerIO
Measures interval or frequency on a C terminal.
Syntax
TimerIO(Dest, Edges, Function, Timeout, Units)
A.5.8 SDI-12 Sensor Suppport — Instructions
Related Topics:
• SDI-12 Sensor Support — Overview (p. 72)
• SDI-12 Sensor Support — Details (p. 363)
• Serial I/O: SDI-12 Sensor Support — Programming Resource (p. 267)
• SDI-12 Sensor Support — Instructions (p. 555)
SDI12Recorder
Issues commands to, and retrieves results from, an SDI-12 sensor.
Syntax
SDI12Recorder(Dest, Terminal, SDIAddress, SDICommand,
Multiplier, Offset)
SDI12SensorSetup
Sets up the CR1000 to act as an SDI-12 sensor.
SDI12SensorSetup(Repetitions, SDIPort, SDIAddress,
ResponseTime)
SDI12SensorResponse
Manages data being held by the CR1000 for transfer to an SDI-12 recorder.
Syntax
SDI12SensorResponse(SDI12Source)
555

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