Campbell Scientific SDM-SIO4 4-Channel Serial I/O Interface - Manual (Page 3)

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SDM-SIO4 Table of Contents
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1. Introduction....................................................................
1.1 What is the SDM-SIO4? ....................................................................... 1-1
1.2 Specifications........................................................................................ 1-3
1.2.1 Serial Ports .................................................................................. 1-3
1.2.2 SDM Port .................................................................................... 1-4
1.2.3 Case............................................................................................. 1-4
1.2.4 Power Requirements ................................................................... 1-4
1.2.5 Environmental Operating Range................................................. 1-5
1.2.6 Other Key Features ..................................................................... 1-5
1.3 'Talk-Through' Mode ............................................................................ 1-5
2. Installation and Hardware Set-Up ...........................2-1
2.1 Setting the SDM Address ..................................................................... 2-1
2.2 Selecting RS232 or 5V Logic for Each Port ......................................... 2-2
2.3 Connections to the SDM-SIO4 ............................................................. 2-2
2.3.1 Transient Protection and Grounding ........................................... 2-2
2.4 Power-on Tests — the Status LED ....................................................... 2-3
3. Understanding How the SDM-SIO4 Handles Data .3-1
3.1 Introduction........................................................................................... 3-1
3.1.1 Method of Entering Special / Control Characters ....................... 3-1
3.2 Input Filters........................................................................................... 3-2
3.2.1 Filter Types ................................................................................. 3-2
3.3 Output Formatting................................................................................. 3-6
3.3.1 Simple Output Formatter............................................................. 3-6
3.3.2 Output Format Strings................................................................. 3-7
4. Programming the SDM-SIO4....................................4-1
4.1 Command Line Operation and Structure .............................................. 4-1
4.2 Entering Commands ............................................................................. 4-1
4.3 Basic Commands .................................................................................. 4-2
4.4 Advanced Commands ........................................................................... 4-3
5. Programming the Datalogger ..................................5-1
5.1 Instruction 113 Parameters ................................................................... 5-1
5.1.1 Parameter 1 — Reps ................................................................... 5-1
5.1.2 Parameter 2 — Address .............................................................. 5-1
5.1.3 Parameter 3 — Mode .................................................................. 5-1
5.1.4 Parameters 4, 5 and 6 — SDM-SIO4 Command ........................ 5-2
5.1.5 Parameter 7 — Values per Rep ................................................... 5-2
5.1.6 Parameter 8 — Starting Input Location ...................................... 5-2
5.1.7 Parameters 9 and 10 — Multiplier and Offset ............................ 5-2