Specifications

SDM-SIO1 Table of Contents
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1. Introduction..................................................................1
2. Specifications ..............................................................2
2.1 Supported Data Rates and Protocols.........................................................2
2.2 Electrical Parameters ................................................................................3
2.2.1 SDM-SIO1 Current Consumption ..................................................3
2.2.2 SDM-SIO1 Voltage Specifications.................................................4
2.2.3 EMC Compliance............................................................................4
2.3 Temperature and Humidity Ranges ..........................................................5
2.4 Physical Parameters..................................................................................5
2.5 Datalogger Compatibility .........................................................................5
3. Installation....................................................................5
3.1 Connections ..............................................................................................6
3.2 Safety Considerations...............................................................................8
3.3 Examples for Connecting the SDM-SIO1 to Other Equipment................9
3.3.1 RS-485 One to One Connection Example ......................................9
3.3.2 RS-485 Multi Unit / In Line Example ..........................................10
3.3.3 RS-485 Half Duplex Wiring Example..........................................11
3.3.4 RS-485 Internal Circuit Diagram..................................................11
3.3.5 RS-232 Wiring Example with Handshaking.................................12
3.3.6 RS-232 Basic 3-Wire Example.....................................................12
3.3.7 Connecting a 9-Way Socket to the SDM-SIO1 ............................13
3.4 Power Conservation................................................................................13
4. Programming the Datalogger ...................................14
4.1 Special Information about the Serial I/O CRBasic Commands when used
with the SDM-SIO1.............................................................................14
4.1.1 SerialOpen ....................................................................................14
4.1.2 SerialClose....................................................................................17
4.1.3 SerialIn..........................................................................................17
4.1.4 SerialOut .......................................................................................17
4.1.5 SerialInBlock ................................................................................17
4.1.6 SerialOutBlock..............................................................................18
4.1.7 SerialInChk ...................................................................................18
4.1.8 SerialInRecord ..............................................................................18
4.1.9 SerialFlush ....................................................................................18
4.1.10 Serial Input Errors.......................................................................18
4.2 Configuring Handshaking and Receive Only Modes .............................18
4.2.1 Using RTS/CTS and Automatic Handshaking..............................18
4.2.2 RS-485 Half-Duplex Mode...........................................................19
4.2.3 Using the RS-232 Link in Receive Only Mode ............................19
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