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SDM-SIO1 Table of Contents

4.3 Example Datalogger Programs .............................................................. 19

4.3.1 Example Using RS-232 Mode...................................................... 20

4.3.2 Example Using RS-485 Mode...................................................... 21

5. Firmware Upgrades and Flash Signature Errors ....22

5.1 Upgrading the Firmware........................................................................ 22

5.2 Firmware Signature Errors..................................................................... 22

Appendix

A. Using the Handshaking Lines for General

Input/Output ..........................................................A-1

A.1 The Input Pin (Pin 8)........................................................................... A-1

A.2 The Output Pin (Pin 9)........................................................................ A-2

Tables

3-1. SDM Address Settings............................................................................ 6

3-2. SDM-SIO1 Connections (left to right as viewed from the front of

the unit) ............................................................................................... 7

3-3. SDM-SIO1 Functional Description of the Connections......................... 7

4-1. Communications Port Parameters RS-232............................................ 15

4-3. Communications Port Parameters RS-485 Half Duplex....................... 16

4-4. Communications Port Parameters RS-232 Receive Only Mode .......... 16

1 2 3 4 5 6 7 8 9 ... 31 32

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Campbell SDM-CAN Specifiche Pagina 4