Specifications

SDM-SIO1 Table of Contents
ii
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