Campbell Scientific CR3000 Micrologger - Manual (Page 488)

Appendix A. CRBasic Programming Instructions
488
SW12
Sets a switched 12‐Vdc terminal high or low.
Syntax
SW12(State)
A.5.6 Pulse and Frequency
Read More! See Pulse
(p. 318).
Note Pull-up resistors are required when using digital I/O (control) ports for
pulse input (see Pulse Input on Digital I/O Channels C1 - C8
(p. 321)
).
PeriodAvg
Measures the period of a signal on any single‐ended voltage input channel.
Syntax
PeriodAvg(Dest, Reps, Range, SEChan, Threshold, PAOption,
Cycles, Timeout, Mult, Offset)
PulseCount
Measures number or frequency of voltages pulses on a pulse channel.
Syntax
PulseCount(Dest, Reps, PChan, PConfig, POption, Mult, Offset)
VibratingWire
The VibratingWire instruction is used to measure a vibrating wire sensor with a
swept frequency (from low to high).
Syntax
VibratingWire(Dest, Reps, Range, SEChan, Vx/ExChan,
StartFreq, EndFreq, TSweep, Steps, DelMeas, NumCycles,
DelReps, Multiplier, Offset)
A.5.7 Digital I/O
CheckPort
Returns the status of a control port.
Syntax
X = CheckPort(Port)
PortGet
Reads the status of a control port.
Syntax
PortGet(Dest, Port)
PortsConfig
Configures control ports as input or output.
Syntax
PortsConfig(Mask, Function)
ReadIO
Reads the status of selected control I/O ports.
Syntax
ReadIO(Dest, Mask)