Campbell-scientific SDM-IO16 16-Channel Input/Output Expansion Module Manuale Utente Scaricare il pdf (Pagina 5)

SDM-IO16 Table of Contents

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1. Introduction..................................................................1

2. Specifications ..............................................................2

2.1 General .....................................................................................................2

2.2 Port Specifications (Output Mode)...........................................................3

2.3 Port Specifications (Input Mode)..............................................................3

2.4 Pulse Counting Specifications..................................................................3

3. Power Considerations.................................................5

4. Installation....................................................................6

4.1 Terminal Connections...............................................................................7

5. Address Selection Switches.......................................8

6. Programming the Datalogger .....................................9

6.1 General Principles.....................................................................................9

6.2 CRBasic Programming ...........................................................................10

6.2.1 SDMIO16 Instruction ...................................................................10

6.2.2 SDMCD16AC Instruction ............................................................11

6.2.3 SDMSpeed Instruction..................................................................11

6.3 Edlog Programming................................................................................12

6.3.1 Instruction 188 (CR10X and CR23X) ..........................................12

6.3.2 Instructions 104 and 29 (CR10, CR7, 21X)..................................14

6.4 Command Codes for SDMIO16 Instruction and Instruction 188...........15

7. Program Examples ....................................................18

7.1 SDMIO16 Example ................................................................................18

7.2 A CR10X Program Using the Outputs for Control of a Greenhouse

Heating and Cooling System..........................................................18

7.3 A CR10X Program which Measures Four Frequency Inputs

(Anemometers) and Four Switch Closure Inputs (Rain Gauges) ...24

7.4 A CR10X Program that uses the Interrupt Subroutine in the

Datalogger to Record the Time of Change of any one of the

Ports on an SDM-IO16...................................................................26

1 2 3 4 5 6 7 8 9 10 ... 43 44

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Campbell-scientific SDM-IO16 16-Channel Input/Output Expansion Module Manuale Utente Pagina 5