Campbell Scientific CR5000 Measurement and Control Module - Manual (Page 128)

Section 7. Measurement Instructions
7-2
7.8 Digital I/O
PeriodAvg - Measures the period or the frequency of a signal on a
single-ended channel.......................................................................... 7-19
PortGet - Reads the status of one of the eight control ports....................... 7-21
PortSet – Sets Digital Ports........................................................................ 7-22
PulseCount – Pulse/Frequency Measurement............................................ 7-23
PulseCountReset - Resets Pulse Counters and Running Averages
Used in Pulse Count Instruction ........................................................ 7-25
ReadIO – Reads State of Digital I/O Ports................................................. 7-25
SW12 – Sets a switched 12 Volt supply high or low................................. 7-26
TimerIO – Measures the time between edges or frequency on the
digital I/O ports of the datalogger...................................................... 7-27
WriteIO – Sets Digital Outputs.................................................................. 7-28
7.9 Peripheral Devices
AM25T - Controls the AM25T multiplexer............................................... 7-29
AO4 – Sets the voltage to an SDM-AO4 output device ............................ 7-30
CANBUS – Measures and controls the SDM-CAN interface ................... 7-31
CD16AC – Controls an SDM-CD16AC, SDMCD16, or SDM-CD16D
16 channel relay/control port device.................................................. 7-36
CS7500 - Communicates with the CS7500 open path CO
2
sensor ............ 7-37
CSAT3 - Communicates with the CSAT3 sonic anemometer ................... 7-38
INT8 – Allows the use of the SDM-INT8, 8 channel interval timer,
with the CR5000 ................................................................................ 7-39
SDMSpeed - Changes the rate that the CR5000 uses to clock the SDM
data..................................................................................................... 7-42
SDMTrigger - Allows the CR5000 to synchronize when measurements
are made............................................................................................. 7-42
SIO4 – Controls and transmits/retrieves data from a CSI SIO4 interface.. 7-42
SW8A – Controls the SDM-SW8A 8-channel switch closure module...... 7-44